[pgpool-hackers: 495] Re: penultimate patch for exception and memory manager ( EXCEPTION_MGR branch)
Tatsuo Ishii
ishii at postgresql.org
Sat Apr 19 11:26:05 JST 2014
Hi Usama,
I have done the test today and all tests passed. Great!
Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp
> Thanks for the fix. I'm going to test it this weekend.
>
> Best regards,
> --
> Tatsuo Ishii
> SRA OSS, Inc. Japan
> English: http://www.sraoss.co.jp/index_en.php
> Japanese: http://www.sraoss.co.jp
>
>> Hi Tatsuo
>>
>> I was able to reproduce and fix the regression issue which was halting the
>> 055.backend_all_backend case. The issue was with the faulty logic in
>> find_primary_node function in which I had made a mistake to put the try
>> catch block inside the loop. I have checked-in the fix in EXCEPTION_MGR
>> branch and the patch for that is also attached with the mail.
>> The patch also makes some adjustments when we report an error from wait()
>> system call. as "EINTR" (Interrupted system call) is not an actual error.
>> So with the current patch wait() loop is not terminated when wait() call
>> failed with EINTR errno.
>>
>> I will be removing the compiler warnings as a separate patch.
>>
>> Thanks
>> --usama
>>
>>
>> On Mon, Apr 7, 2014 at 4:54 PM, Muhammad Usama <m.usama at gmail.com> wrote:
>>
>>> Hi Tatsuo
>>>
>>> Thanks for testing the Exception manager branch. I have pushed the merge
>>> and now the branch is up-to date with the master branch. I am looking into
>>> the issue you are getting with the regression and compiler warnings and
>>> will update you on this.
>>>
>>> Regarding your comment. "Looking at your commit, it seems there are some
>>> unresolved conflicts."
>>> All the conflicts were resolved in the brach when the merge was pushed.
>>> The git log message is only informing about the conflicts
>>> which occurred during the merge, but I had resolved all the conflicts
>>> before committing the merge.
>>>
>>> Thanks
>>> Usama
>>>
>>>
>>> On Sun, Apr 6, 2014 at 4:43 AM, Tatsuo Ishii <ishii at postgresql.org> wrote:
>>>
>>>> Usama,
>>>>
>>>> Finally I had a chance to EXCEPTION_MGR branch on Cent OS 6.5.1.
>>>> (51101226e1ba8b4feaca4ac4a01fcd4528f4c8a).
>>>>
>>>> 1) there are number of compiler warnings.
>>>>
>>>> 2) regression test 055.backend_all_backend does not pass (hungs)
>>>>
>>>> Here is the pgpool log when it hungs:
>>>>
>>>> 2014-04-06 08:19:20: pid 16130: LOG: failover: set new primary node: -1
>>>> 2014-04-06 08:19:20 LOG: pid: 16212 worker process received restart
>>>> request
>>>> 2014-04-06 08:19:20: pid 16130: LOG: failover done. shutdown host
>>>> /tmp(11001)
>>>> 2014-04-06 08:19:21 LOG: pid: 16211 pcp child process received restart
>>>> request
>>>> 2014-04-06 08:19:21: pid 16130: LOG: PCP child 16211 exits with status
>>>> 256 in failover()
>>>> 2014-04-06 08:19:21: pid 16130: LOG: fork a new PCP child pid 16277 in
>>>> failover()
>>>> 2014-04-06 08:19:21: pid 16130: LOG: worker child 16212 exits with
>>>> status 256
>>>> 2014-04-06 08:19:21: pid 16130: LOG: fork a new worker child pid 16278
>>>> 2014-04-06 08:19:21: pid 16130: LOG: health checking retry count 3
>>>> 2014-04-06 08:19:21: pid 16130: LOG: received fast shutdown request
>>>> 2014-04-06 08:19:21: pid 16278: WARNING: child_exit: called from invalid
>>>> process. ignored.
>>>> 2014-04-06 08:19:21: pid 16277: WARNING: child_exit: called from invalid
>>>> process. ignored.
>>>> 2014-04-06 08:19:26: pid 16130: LOG: received fast shutdown request
>>>> 2014-04-06 08:19:41 ERROR: pid: 16130 wait() failed. reason:Interrupted
>>>> system call
>>>>
>>>> pid 16130 is pgpool main process and it loops forever:
>>>>
>>>> 20 0x000000370a20f1d4 in wait () from /lib64/libpthread.so.0
>>>> #1 0x0000000000406987 in terminate_all_childrens (code=<value optimized
>>>> out>,
>>>> arg=<value optimized out>) at main/pgpool_main.c:787
>>>> #2 system_will_go_down (code=<value optimized out>, arg=<value optimized
>>>> out>)
>>>> at main/pgpool_main.c:2512
>>>> #3 0x000000000045d4ea in proc_exit_prepare (code=-1)
>>>> at utils/error/elog.c:2301
>>>> #4 0x0000003709e35e22 in exit () from /lib64/libc.so.6
>>>> #5 0x00000000004066fa in system_exit (sig=2) at main/pgpool_main.c:803
>>>> #6 exit_handler (sig=2) at main/pgpool_main.c:1004
>>>> #7 <signal handler called>
>>>> #8 0x000000370a20f1d2 in wait () from /lib64/libpthread.so.0
>>>> #9 0x00000000004066c4 in exit_handler (sig=2) at main/pgpool_main.c:998
>>>> #10 <signal handler called>
>>>> #11 0x0000003709e32be0 in sigprocmask () from /lib64/libc.so.6
>>>> #12 0x0000000000408933 in PgpoolMain (discard_status=<value optimized
>>>> out>,
>>>> clear_memcache_oidmaps=<value optimized out>) at
>>>> main/pgpool_main.c:408
>>>> #13 0x0000000000404660 in main (argc=<value optimized out>,
>>>> argv=<value optimized out>) at main/main.c:319
>>>>
>>>> pgpool_main.c:787 is here:
>>>> ----------------------------------------------------
>>>> /* wait for all children to exit */
>>>>
>>>> while (wait(NULL) > 0); <--- 787
>>>> if (errno != ECHILD)
>>>> ereport(LOG,
>>>> (errmsg("wait() failed. reason:%s", strerror(errno))));
>>>> --------------------------------------------------------
>>>>
>>>> It seems pgpool is waitng for children which are not exiting.
>>>>
>>>> Here are pgpool related processes which remain at the point:
>>>>
>>>> 16130 pts/1 S+ 0:00
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/temp/installed/bin/pgpool
>>>> -D -n -f
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pgpool.conf
>>>> -F
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pcp.conf
>>>> -a
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pool_hba.conf
>>>> 16172 pts/1 S+ 0:00
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/temp/installed/bin/pgpool
>>>> -D -n -f
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pgpool.conf
>>>> -F
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pcp.conf
>>>> -a
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pool_hba.conf
>>>> 16234 pts/1 S+ 0:00 /bin/sh
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/follow_master.sh
>>>> 1 /tmp 11001
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/data1
>>>> 1 0 /tmp 0
>>>> 16276 pts/1 S+ 0:00
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/temp/installed/bin/pgpool
>>>> -f
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pgpool.conf
>>>> -m f stop
>>>> 16281 pts/1 S+ 0:00
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/temp/installed/bin/pgpool
>>>> -f
>>>> /home/vagrant/src/pgpool2-5511012/src/test/regression/tests/055.backend_all_down/testdir/etc/pgpool.conf
>>>> -m f stop
>>>> 16584 pts/2 S+ 0:00 grep pgpool
>>>>
>>>> I have no idea what's wrong so far...
>>>>
>>>> Best regards,
>>>> --
>>>> Tatsuo Ishii
>>>> SRA OSS, Inc. Japan
>>>> English: http://www.sraoss.co.jp/index_en.php
>>>> Japanese: http://www.sraoss.co.jp
>>>>
>>>>
>>>> From: Muhammad Usama <m.usama at gmail.com>
>>>> Subject: Re: penultimate patch for exception and memory manager (
>>>> EXCEPTION_MGR branch)
>>>> Date: Tue, 1 Apr 2014 20:25:34 +0500
>>>> Message-ID: <CAEJvTzVcOR2GLF9+ekP5_iLyi3=
>>>> 4vCc4Go+oypd1L+sRg7hjJg at mail.gmail.com>
>>>>
>>>> > Hi Tatsuo,
>>>> >
>>>> > I haven't had any success in reproducing the issue you encountered with
>>>> my
>>>> > patch, the regression runs cleanly on my end. I have therefore committed
>>>> > the patch in the EXCEPTION_MGR branch so I can continue with the
>>>> remaining
>>>> > work on the memory manger front and will apply the fix for the problem
>>>> once
>>>> > it is fixed as a patch.
>>>> >
>>>> > Thanks
>>>> > Usama
>>>> >
>>>> >
>>>> >
>>>> > On Thu, Mar 27, 2014 at 8:32 PM, Muhammad Usama <m.usama at gmail.com>
>>>> wrote:
>>>> >
>>>> >> Hi Tatsuo.
>>>> >>
>>>> >> I am looking into the problem of double free reported by you. but I am
>>>> >> unable to reproduce the scenario at my end. I tried the regression on
>>>> Linux
>>>> >> Ubuntu x86_64 and on OS/X and regression is clean on both systems. Can
>>>> you
>>>> >> please tell me if you can always produce the problem or with some
>>>> specific
>>>> >> configure switches.
>>>> >> And if it is possible for you to send me the stack trace with symbols
>>>> for
>>>> >> the problem that would be really helpful for identifying the exact
>>>> issue.
>>>> >>
>>>> >> thanks
>>>> >> Muhammad Usama
>>>> >>
>>>> >>
>>>> >> On Wed, Mar 19, 2014 at 6:20 PM, Muhammad Usama <m.usama at gmail.com>
>>>> wrote:
>>>> >>
>>>> >>> Hi Tatsuo
>>>> >>>
>>>> >>> Sorry for the delay. I was stuck in some other work, and now I am
>>>> >>> resuming the work on this patch. For some reason regression was
>>>> working
>>>> >>> fine on my machine when I sent out the patch but will send you the
>>>> updated
>>>> >>> patch after figuring out the problem.
>>>> >>>
>>>> >>>
>>>> >>> Thanks
>>>> >>> Usama
>>>> >>>
>>>> >>>
>>>> >>>
>>>> >>> On Wed, Feb 19, 2014 at 9:23 AM, Tatsuo Ishii <ishii at postgresql.org
>>>> >wrote:
>>>> >>>
>>>> >>>> Usama,
>>>> >>>>
>>>> >>>> Thanks for the explanation.
>>>> >>>>
>>>> >>>> BTW, I ran a reggression test against EXEC_MANAGER branch and got
>>>> >>>> serious problems.
>>>> >>>>
>>>> >>>> testing 003.failover...*** glibc detected *** pgpool: worker process:
>>>> >>>> free(): invalid pointer: 0x00000000007756c8 ***
>>>> >>>>
>>>> >>>> testing 055.backend_all_down...*** glibc detected ***
>>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool:
>>>> >>>> double free or corruption (!prev): 0x000000000075c050 ***
>>>> >>>>
>>>> >>>> [ and regression test hangs]
>>>> >>>>
>>>> >>>> Detailed log attached.
>>>> >>>>
>>>> >>>> Best regards,
>>>> >>>> --
>>>> >>>> Tatsuo Ishii
>>>> >>>> SRA OSS, Inc. Japan
>>>> >>>> English: http://www.sraoss.co.jp/index_en.php
>>>> >>>> Japanese: http://www.sraoss.co.jp
>>>> >>>>
>>>> >>>> > On Thu, Feb 13, 2014 at 3:49 AM, Tatsuo Ishii <
>>>> ishii at postgresql.org>
>>>> >>>> wrote:
>>>> >>>> >
>>>> >>>> >> Usama,
>>>> >>>> >>
>>>> >>>> >> Thanks for your hard work.
>>>> >>>> >>
>>>> >>>> >> One thing I noticed is, you moved src/tools/pcp to src/utils/pcp.
>>>> Is
>>>> >>>> >> there any reason for this?
>>>> >>>> >>
>>>> >>>> >
>>>> >>>> > Since the pgpool binary and pcp tool binaries all requires the
>>>> >>>> functions
>>>> >>>> > defined in pcp_stream.c for reading and writing to pcp streams. But
>>>> >>>> with
>>>> >>>> > the arrival of memory manager API in pgpool, pcp stream functions
>>>> >>>> requires
>>>> >>>> > to distinguish between calls made from pgpool and pcp tools. As we
>>>> >>>> need to
>>>> >>>> > create reading and writing buffers in specific MemoryContexts when
>>>> the
>>>> >>>> > function is invoked from pgpool, and as pcp tools does not have a
>>>> >>>> concept
>>>> >>>> > of MemoryContext so the step of selecting a MemoryContext before
>>>> >>>> allocating
>>>> >>>> > a memory needed to be skipped when in pcp tools environment.
>>>> >>>> >
>>>> >>>> > To achieve the above, the patch makes the libpcp exclusive for the
>>>> tool
>>>> >>>> > binaries only (compile with POOL_PRIVATE flag) and now pgpool uses
>>>> the
>>>> >>>> > pcp_stream.c function directly and no longer has the dependancy on
>>>> the
>>>> >>>> lib.
>>>> >>>> >
>>>> >>>> > To make this new arrangement visible in pgpool source directory
>>>> >>>> structure
>>>> >>>> > the patch rearranges the source code organisation and moves the
>>>> >>>> > pcp_stream.c and pcp_error.c files to src/utils/pcp from
>>>> src/lib/pcp
>>>> >>>> > directory, while the pcp.c file still remains at its original
>>>> >>>> directory.
>>>> >>>> > Also the new arrangement of code seems more naturally fit to the
>>>> rest
>>>> >>>> of
>>>> >>>> > pgppol-II source structure as other stream related functions also
>>>> >>>> resides
>>>> >>>> > in src/utils directory.
>>>> >>>> >
>>>> >>>> > --
>>>> >>>> > Thanks
>>>> >>>> > Muhammad Usama
>>>> >>>> >
>>>> >>>> >
>>>> >>>> > --
>>>> >>>> >> Tatsuo Ishii
>>>> >>>> >> SRA OSS, Inc. Japan
>>>> >>>> >> English: http://www.sraoss.co.jp/index_en.php
>>>> >>>> >> Japanese: http://www.sraoss.co.jp
>>>> >>>> >>
>>>> >>>> >> From: Muhammad Usama <m.usama at gmail.com>
>>>> >>>> >> Subject: Re: penultimate patch for exception and memory manager (
>>>> >>>> >> EXCEPTION_MGR branch)
>>>> >>>> >> Date: Tue, 11 Feb 2014 19:55:48 +0500
>>>> >>>> >> Message-ID: <
>>>> >>>> >>
>>>> CAEJvTzWEjDWgtJ3HGCuaSwkGpXzWBETmrM4ShrA5tcNTQFvEuA at mail.gmail.com>
>>>> >>>> >>
>>>> >>>> >> > Hi Tatsuo
>>>> >>>> >> >
>>>> >>>> >> > I have rebased the EXCEPTION_MGR branch to current master,
>>>> please
>>>> >>>> find
>>>> >>>> >> the
>>>> >>>> >> > updated patch generated after rebasing.
>>>> >>>> >> >
>>>> >>>> >> > Thanks
>>>> >>>> >> > Muhammad Usama
>>>> >>>> >> >
>>>> >>>> >> >
>>>> >>>> >> > On Tue, Feb 11, 2014 at 11:17 AM, Tatsuo Ishii <
>>>> >>>> ishii at postgresql.org>
>>>> >>>> >> wrote:
>>>> >>>> >> >
>>>> >>>> >> >> Usama,
>>>> >>>> >> >>
>>>> >>>> >> >> I have checked EXCEPTION_MGR branch and it seems it is far
>>>> behind
>>>> >>>> main
>>>> >>>> >> >> branch. The last patch brought to the EXCEPTION_MGR was dated
>>>> >>>> >> >> 2013/12/19. Can you please rebase the branch?
>>>> >>>> >> >>
>>>> >>>> >> >> Best regards,
>>>> >>>> >> >> --
>>>> >>>> >> >> Tatsuo Ishii
>>>> >>>> >> >> SRA OSS, Inc. Japan
>>>> >>>> >> >> English: http://www.sraoss.co.jp/index_en.php
>>>> >>>> >> >> Japanese: http://www.sraoss.co.jp
>>>> >>>> >> >>
>>>> >>>> >> >> From: Muhammad Usama <m.usama at gmail.com>
>>>> >>>> >> >> Subject: penultimate patch for exception and memory manager (
>>>> >>>> >> >> EXCEPTION_MGR branch)
>>>> >>>> >> >> Date: Mon, 10 Feb 2014 19:53:41 +0500
>>>> >>>> >> >> Message-ID: <CAEJvTzUZHKKHjz-ZvYaAsviwVVBKSoX-ByNq9rhANO1zPJYR=
>>>> >>>> >> >> w at mail.gmail.com>
>>>> >>>> >> >>
>>>> >>>> >> >> > Please find the penultimate patch for integration of memory
>>>> and
>>>> >>>> >> exception
>>>> >>>> >> >> > manager APIs into pgpool.
>>>> >>>> >> >> > The patch is generated on the EXCEPTION_MGR development
>>>> branch
>>>> >>>> and
>>>> >>>> >> >> > integrates the said APIs in query processing portion of
>>>> pgpool-II
>>>> >>>> >> code.
>>>> >>>> >> >> >
>>>> >>>> >> >> > Patch summary for review
>>>> >>>> >> >> > ======================
>>>> >>>> >> >> > The patch is very large mainly because of replacing of
>>>> >>>> pool_error(),
>>>> >>>> >> >> > pool_debug() and pool_log() function calls to
>>>> ereport(ERROR,..)
>>>> >>>> >> >> > ereport(DEBUG,..) and ereport(LOG,..) and it would be little
>>>> time
>>>> >>>> >> >> consuming
>>>> >>>> >> >> > to review the patch. Although all the above also needs the
>>>> >>>> thorough
>>>> >>>> >> >> review,
>>>> >>>> >> >> > as replacing pool_error() with ereport(ERROR) or
>>>> ereport(FATAL)
>>>> >>>> is
>>>> >>>> >> just
>>>> >>>> >> >> not
>>>> >>>> >> >> > a cosmetic but changes the flow of code, but there are few
>>>> >>>> things,
>>>> >>>> >> that
>>>> >>>> >> >> > requires the more attention than others.
>>>> >>>> >> >> >
>>>> >>>> >> >> > Lifecycle of objects.
>>>> >>>> >> >> > ================
>>>> >>>> >> >> > Since with integration of memory manager, it is very
>>>> important to
>>>> >>>> >> manage
>>>> >>>> >> >> > the life cycle of each object and making sure the object is
>>>> >>>> created in
>>>> >>>> >> >> the
>>>> >>>> >> >> > proper MemoryContext. Here is the summary of some important
>>>> >>>> objects
>>>> >>>> >> and
>>>> >>>> >> >> > their residences.
>>>> >>>> >> >> >
>>>> >>>> >> >> > Some Important Memory Contexts
>>>> >>>> >> >> > ============================
>>>> >>>> >> >> >
>>>> >>>> >> >> > ProcessLoopContext:
>>>> >>>> >> >> > This context resets at every main loop iteration of a process
>>>> >>>> >> >> >
>>>> >>>> >> >> > TopMemoryContext:
>>>> >>>> >> >> > This context is same as PostgreSQL's TopMemoryContext and
>>>> lives
>>>> >>>> for a
>>>> >>>> >> >> life
>>>> >>>> >> >> > time of process.
>>>> >>>> >> >> >
>>>> >>>> >> >> > ErrorContext:
>>>> >>>> >> >> > Same as PostgreSQL's ErrorContext and used for error
>>>> processing.
>>>> >>>> >> >> >
>>>> >>>> >> >> > QueryContext:
>>>> >>>> >> >> > Used by pgpool child process and it lives for single query
>>>> cycle.
>>>> >>>> >> >> >
>>>> >>>> >> >> >
>>>> >>>> >> >> > Lifecycle of Important Objects
>>>> >>>> >> >> > ========================
>>>> >>>> >> >> >
>>>> >>>> >> >> > SessionContext:
>>>> >>>> >> >> > The session context consists of a backend and frontend
>>>> >>>> connection and
>>>> >>>> >> it
>>>> >>>> >> >> > lives for a single iteration of main child process loop.
>>>> >>>> >> >> > So the session context object is created in
>>>> ProcessLoopContext.
>>>> >>>> >> >> >
>>>> >>>> >> >> > ProcessContext:
>>>> >>>> >> >> > ConnectionPool:
>>>> >>>> >> >> > BackendConnection:
>>>> >>>> >> >> > The above objects are required for the life of process hence
>>>> are
>>>> >>>> >> created
>>>> >>>> >> >> in
>>>> >>>> >> >> > TopMemoryContext which lives throughout the process life
>>>> time.
>>>> >>>> >> >> >
>>>> >>>> >> >> > Child Frontend connection:
>>>> >>>> >> >> > Frontend connection object is placed in the
>>>> ProcessLoopContext
>>>> >>>> since
>>>> >>>> >> new
>>>> >>>> >> >> > frontend connection is created at every main loop iteration
>>>> of
>>>> >>>> pgpool
>>>> >>>> >> >> child
>>>> >>>> >> >> > process.
>>>> >>>> >> >> >
>>>> >>>> >> >> > PCP Frontend connection:
>>>> >>>> >> >> > This object can live till the pcp process so the object for
>>>> pcp
>>>> >>>> >> frontend
>>>> >>>> >> >> is
>>>> >>>> >> >> > created in TopMemoryContext.
>>>> >>>> >> >> >
>>>> >>>> >> >> > new configuration parameters
>>>> >>>> >> >> > ========================
>>>> >>>> >> >> >
>>>> >>>> >> >> > The patch also adds three new configuration parameters to
>>>> >>>> control the
>>>> >>>> >> >> error
>>>> >>>> >> >> > reporting style and details.
>>>> >>>> >> >> > Parameters names and their behaviours are borrowed from
>>>> >>>> PostgreSQL.
>>>> >>>> >> >> >
>>>> >>>> >> >> > int log_error_verbosity; /* controls how much detail about
>>>> >>>> error
>>>> >>>> >> >> should
>>>> >>>> >> >> > be emitted */
>>>> >>>> >> >> >
>>>> >>>> >> >> > int client_min_messages; /*controls which message should
>>>> be
>>>> >>>> sent to
>>>> >>>> >> >> > client */
>>>> >>>> >> >> >
>>>> >>>> >> >> > int log_min_messages; /*controls which message should
>>>> be
>>>> >>>> >> emitted to
>>>> >>>> >> >> > server log */
>>>> >>>> >> >> >
>>>> >>>> >> >> >
>>>> >>>> >> >> > Some other notable changes introduced by the patch.
>>>> >>>> >> >> > ==========================================
>>>> >>>> >> >> >
>>>> >>>> >> >> > The patch changes the error reporting behaviour and now
>>>> pgpool-II
>>>> >>>> >> tries
>>>> >>>> >> >> to
>>>> >>>> >> >> > send all the error and log messages to the connected frontend
>>>> >>>> clients
>>>> >>>> >> >> > (controllable by "client_min_messages" configuration
>>>> parameter ).
>>>> >>>> >> >> >
>>>> >>>> >> >> > The patch added an extra call back "on_system_exit" to the
>>>> elog
>>>> >>>> API,
>>>> >>>> >> >> which
>>>> >>>> >> >> > is not present in the PostgreSQL.
>>>> >>>> >> >> > The call back is called at system exit by elog API just
>>>> before
>>>> >>>> calling
>>>> >>>> >> >> the
>>>> >>>> >> >> > "on_shmem_exit" call backs.
>>>> >>>> >> >> > "on_system_exit" is a single call back and can be used to
>>>> clean
>>>> >>>> up
>>>> >>>> >> things
>>>> >>>> >> >> > which are dependent on shared memory.
>>>> >>>> >> >> >
>>>> >>>> >> >> > "repalloc()" behaviour in PostgreSQL palloc API is little
>>>> >>>> different
>>>> >>>> >> from
>>>> >>>> >> >> > C-API counterpart "realloc()".
>>>> >>>> >> >> > ("realloc()" behaves as "malloc()" if ptr argument is NULL.
>>>> While
>>>> >>>> >> >> > "repalloc()" does not works on NULL pointers)
>>>> >>>> >> >> > So I have changed the behaviour of "repalloc()" to make it
>>>> more
>>>> >>>> >> >> consistent
>>>> >>>> >> >> > with C-API.
>>>> >>>> >> >> >
>>>> >>>> >> >> > The patch makes the libpcp exclusive for the tool binaries
>>>> only
>>>> >>>> >> (compile
>>>> >>>> >> >> > with POOL_PRIVATE flag ). pgpool binary no longer has the
>>>> >>>> dependancy
>>>> >>>> >> on
>>>> >>>> >> >> the
>>>> >>>> >> >> > lib, and uses the pcp_stream.c function directly.
>>>> >>>> >> >> > For this new arrangement the patch also rearranges the source
>>>> >>>> code
>>>> >>>> >> >> > organisation and moves the pcp_stream.c and pcp_error.c
>>>> files to
>>>> >>>> >> >> > src/utils/pcp directory from src/lib/pcp directory.
>>>> >>>> >> >> >
>>>> >>>> >> >> > What is still remaining.
>>>> >>>> >> >> > ==================
>>>> >>>> >> >> > 1- Need to decide the MemoryContext for memcache objects.
>>>> >>>> >> >> > 2- Watchdog and few rewrite function are still without the
>>>> >>>> managers.
>>>> >>>> >> >> > 3- Replace all remaining occurrences of pool_error,
>>>> pool_debug,
>>>> >>>> and
>>>> >>>> >> >> > pool_log with appropriate ereport() calls
>>>> >>>> >> >> > 4 -Code cleanup
>>>> >>>> >> >> >
>>>> >>>> >> >> > Reviews comments and suggestions are most welcome
>>>> >>>> >> >> >
>>>> >>>> >> >> > Thanks
>>>> >>>> >> >> > Usama
>>>> >>>> >> >>
>>>> >>>> >>
>>>> >>>>
>>>> >>>> using pgpool-II at /home/t-ishii/work/
>>>> >>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed
>>>> >>>> *************************
>>>> >>>> REGRESSION MODE : install
>>>> >>>> PGPOOL-II : /home/t-ishii/work/
>>>> >>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed
>>>> >>>> PostgreSQL bin : /usr/local/pgsql/bin
>>>> >>>> pgbench : /usr/local/pgsql/bin/pgbench
>>>> >>>> PostgreSQL jdbc :
>>>> /usr/local/pgsql/share/postgresql-9.2-1003.jdbc4.jar
>>>> >>>> *************************
>>>> >>>> testing 001.load_balance...ok.
>>>> >>>> testing 002.native_replication...ok.
>>>> >>>>
>>>> >>>> testing 003.failover...*** glibc detected *** pgpool: worker process:
>>>> >>>> free(): invalid pointer: 0x00000000007756c8 ***
>>>> >>>> ======= Backtrace: =========
>>>> >>>> /lib64/libc.so.6(+0x763b6)[0x7fd2922cf3b6]
>>>> >>>> pgpool: worker process[0x41d1ff]
>>>> >>>> pgpool: worker process[0x436363]
>>>> >>>> pgpool: worker process[0x436615]
>>>> >>>> pgpool: worker process[0x405e94]
>>>> >>>> pgpool: worker process[0x4072bf]
>>>> >>>> pgpool: worker process[0x407425]
>>>> >>>> pgpool: worker process[0x408d01]
>>>> >>>> pgpool: worker process[0x404ef8]
>>>> >>>> /lib64/libc.so.6(__libc_start_main+0xfd)[0x7fd292277b1d]
>>>> >>>> pgpool: worker process[0x4040e9]
>>>> >>>> ======= Memory map: ========
>>>> >>>> 00400000-0050c000 r-xp 00000000 08:05 2635374
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070c000-0070e000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070c000-0070e000>rw-p
>>>> 0010c000 08:05 2635374 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070e000-00795000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070e000-00795000>rw-p
>>>> 00000000 00:00 0 [heap]
>>>> >>>> 7fd29044d000-7fd290463000 r-xp 00000000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290463000-7fd290662000 ---p 00016000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290662000-7fd290663000 rw-p 00015000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290663000-7fd290883000 rw-s 00000000 00:04 61898777
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd290883000-7fd29088f000 r-xp 00000000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd29088f000-7fd290a8e000 ---p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a8e000-7fd290a8f000 r--p 0000b000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a8f000-7fd290a90000 rw-p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a90000-7fd290a92000 r-xp 00000000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290a92000-7fd290c91000 ---p 00002000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290c91000-7fd290c92000 rw-p 00001000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7fd290c9a000-7fd290e99000 ---p 00008000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7fd290e99000-7fd290e9a000 rw-p 00007000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7fd290e9a000-7fd290e9c000 r-xp 00000000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7fd290e9c000-7fd29109c000 ---p 00002000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7fd29109c000-7fd29109d000 r--p 00002000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7fd29109d000-7fd29109e000 rw-p 00003000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7fd29109e000-7fd2910c5000 r-xp 00000000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7fd2910c5000-7fd2912c4000 ---p 00027000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7fd2912c4000-7fd2912c6000 rw-p 00026000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7fd2912c6000-7fd2912c9000 r-xp 00000000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7fd2912c9000-7fd2914c8000 ---p 00003000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7fd2914c8000-7fd2914c9000 rw-p 00002000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7fd2914c9000-7fd291597000 r-xp 00000000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7fd291597000-7fd291796000 ---p 000ce000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7fd291796000-7fd2917a1000 rw-p 000cd000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7fd2917a1000-7fd2917d9000 r-xp 00000000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7fd2917d9000-7fd2919d8000 ---p 00038000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7fd2919d8000-7fd2919da000 rw-p 00037000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7fd2919da000-7fd291a36000 r-xp 00000000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7fd291a36000-7fd291c35000 ---p 0005c000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7fd291c35000-7fd291c37000 rw-p 0005b000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7fd291c37000-7fd291c3b000 rw-p 00000000 00:00 0
>>>> >>>> 7fd291c3b000-7fd291dd1000 r-xp 00000000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7fd291dd1000-7fd291fd0000 ---p 00196000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7fd291fd0000-7fd291ff3000 rw-p 00195000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7fd291ff3000-7fd291ff7000 rw-p 00000000 00:00 0
>>>> >>>> 7fd291ff7000-7fd292052000 r-xp 00000000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7fd292052000-7fd292251000 ---p 0005b000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7fd292251000-7fd292259000 rw-p 0005a000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7fd292259000-7fd2923ca000 r-xp 00000000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7fd2923ca000-7fd2925ca000 ---p 00171000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7fd2925ca000-7fd2925ce000 r--p 00171000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7fd2925ce000-7fd2925cf000 rw-p 00175000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7fd2925cf000-7fd2925d4000 rw-p 00000000 00:00 0
>>>> >>>> 7fd2925d4000-7fd292656000 r-xp 00000000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7fd292656000-7fd292855000 ---p 00082000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7fd292855000-7fd292856000 r--p 00081000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7fd292856000-7fd292857000 rw-p 00082000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7fd292857000-7fd29286d000 r-xp 00000000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7fd29286d000-7fd292a6c000 ---p 00016000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7fd292a6c000-7fd292a6d000 r--p 00015000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7fd292a6d000-7fd292a6e000 rw-p 00016000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7fd292a6e000-7fd292a70000 rw-p 00000000 00:00 0
>>>> >>>> 7fd292a70000-7fd292a86000 r-xp 00000000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7fd292a86000-7fd292c85000 ---p 00016000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7fd292c85000-7fd292c86000 r--p 00015000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7fd292c86000-7fd292c87000 rw-p 00016000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7fd292c87000-7fd292c89000 rw-p 00000000 00:00 0
>>>> >>>> 7fd292c89000-7fd292c90000 r-xp 00000000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7fd292c90000-7fd292e90000 ---p 00007000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7fd292e90000-7fd292e91000 r--p 00007000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7fd292e91000-7fd292e92000 rw-p 00008000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7fd292e92000-7fd292ec0000 rw-p 00000000 00:00 0
>>>> >>>> 7fd292ec0000-7fd292ed7000 r-xp 00000000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7fd292ed7000-7fd2930d6000 ---p 00017000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7fd2930d6000-7fd2930d7000 r--p 00016000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7fd2930d7000-7fd2930d8000 rw-p 00017000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7fd2930d8000-7fd2930dc000 rw-p 00000000 00:00 0
>>>> >>>> 7fd2930fb000-7fd293102000 r-xp 00000000 08:05 2635363
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7fd293102000-7fd293302000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07fd293102000-7fd293302000>---p
>>>> 00007000 08:05 2635363 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7fd293302000-7fd293303000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07fd293302000-7fd293303000>rw-p
>>>> 00007000 08:05 2635363 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7fd293303000-7fd29332b000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07fd293303000-7fd29332b000>r-xp
>>>> 00000000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7fd29332b000-7fd29352a000 ---p 00028000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7fd29352a000-7fd29352d000 rw-p 00027000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7fd29352d000-7fd29354b000 r-xp 00000000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7fd29372e000-7fd29372f000 rw-s 00000000 00:04 61997084
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd29372f000-7fd293730000 rw-s 00000000 00:04 61964315
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd293730000-7fd293731000 rw-s 00000000 00:04 61931546
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd293731000-7fd29373f000 rw-s 00000000 00:04 61866007
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd29373f000-7fd29374a000 rw-p 00000000 00:00 0
>>>> >>>> 7fd29374a000-7fd29374b000 r--p 0001d000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7fd29374b000-7fd29374c000 rw-p 0001e000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7fd29374c000-7fd29374d000 rw-p 00000000 00:00 0
>>>> >>>> 7fffb3324000-7fffb3345000 rw-p 00000000 00:00 0
>>>> >>>> [stack]
>>>> >>>> 7fffb33ff000-7fffb3400000 r-xp 00000000 00:00 0
>>>> >>>> [vdso]
>>>> >>>> ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
>>>> >>>> [vsyscall]
>>>> >>>>
>>>> >>>> *** glibc detected *** pgpool: worker process: free(): invalid
>>>> pointer:
>>>> >>>> 0x00000000007756c8 ***
>>>> >>>> ======= Backtrace: =========
>>>> >>>> /lib64/libc.so.6(+0x763b6)[0x7fd2922cf3b6]
>>>> >>>> pgpool: worker process[0x41d1ff]
>>>> >>>> pgpool: worker process[0x436363]
>>>> >>>> pgpool: worker process[0x436615]
>>>> >>>> pgpool: worker process[0x405e94]
>>>> >>>> pgpool: worker process[0x4072bf]
>>>> >>>> pgpool: worker process[0x407425]
>>>> >>>> pgpool: worker process[0x408d01]
>>>> >>>> pgpool: worker process[0x404ef8]
>>>> >>>> /lib64/libc.so.6(__libc_start_main+0xfd)[0x7fd292277b1d]
>>>> >>>> pgpool: worker process[0x4040e9]
>>>> >>>> ======= Memory map: ========
>>>> >>>> 00400000-0050c000 r-xp 00000000 08:05 2635374
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070c000-0070e000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070c000-0070e000>rw-p
>>>> 0010c000 08:05 2635374 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070e000-00795000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070e000-00795000>rw-p
>>>> 00000000 00:00 0 [heap]
>>>> >>>> 7fd29044d000-7fd290463000 r-xp 00000000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290463000-7fd290662000 ---p 00016000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290662000-7fd290663000 rw-p 00015000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7fd290663000-7fd290883000 rw-s 00000000 00:04 61898777
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7fd290883000-7fd29088f000 r-xp 00000000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd29088f000-7fd290a8e000 ---p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a8e000-7fd290a8f000 r--p 0000b000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a8f000-7fd290a90000 rw-p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7fd290a90000-7fd290a92000 r-xp 00000000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290a92000-7fd290c91000 ---p 00002000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290c91000-7fd290c92000 rw-p 00001000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7fd290c9a000-7fd290e99000 ---p 00008000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7fd290e99000-7fd290e9a000 rw-p 00007000 08:05 1704181
>>>> >>>> ok.
>>>> >>>> testing 004.watchdog...ok.
>>>> >>>> testing 005.jdbc...ok.
>>>> >>>> testing 006.memqcache...ok.
>>>> >>>> testing 050.bug58...ok.
>>>> >>>> testing 051.bug60...ok.
>>>> >>>> testing 052.do_query...ok.
>>>> >>>> testing 053.insert_lock_hangs...ok.
>>>> >>>> testing 054.postgres_fdw...ok.
>>>> >>>>
>>>> >>>> testing 055.backend_all_down...*** glibc detected ***
>>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool:
>>>> >>>> double free or corruption (!prev): 0x000000000075c050 ***
>>>> >>>> *** glibc detected *** pgpool: worker process: double free or
>>>> >>>> corruption (!prev): 0x000000000075d490 ***
>>>> >>>> ======= Backtrace: =========
>>>> >>>> /lib64/libc.so.6(+0x763b6)[0x7f0dca1f93b6]
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x41d1ff]<http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x41d1ff%5D>
>>>> >>>>
>>>> >>>> /home/t-ishii/work/
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x4058a7]<http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x4058a7%5D>
>>>> >>>>
>>>> >>>> /home/t-ishii/work/
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x40882f]<http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x40882f%5D>
>>>> >>>>
>>>> >>>> /home/t-ishii/work/
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x404ef8]<http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x404ef8%5D>
>>>> <
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x41d1ff%5D/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x4058a7%5D/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x40882f%5D/home/t-ishii/work/git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x404ef8%5D
>>>> >
>>>> >>>> ======= Backtrace: =========
>>>> >>>> /lib64/libc.so.6(__libc_start_main+0xfd)[0x7f0dca1a1b1d]
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool[0x4040e9]<http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x4040e9%5D>
>>>> <
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool%5B0x4040e9%5D
>>>> >
>>>> >>>> pgpool: worker process======= Memory map: ========
>>>> >>>> /lib64/libc.so.6(__libc_start_main+0xfd)[0x7f0dca1a1b1d]
>>>> >>>> pgpool: worker process[0x4040e9]
>>>> >>>> ======= Memory map: ========
>>>> >>>> 00400000-0050c000 r-xp 00000000 08:05 2635374
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070c000-0070e000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070c000-0070e000>rw-p
>>>> 0010c000 08:05 2635374 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool
>>>> >>>> 0070e000-00771000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/bin/pgpool0070e000-00771000>rw-p
>>>> 00000000 00:00 0 [heap]
>>>> >>>> 7f0dc8377000-7f0dc838d000 r-xp 00000000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7f0dc838d000-7f0dc858c000 ---p 00016000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7f0dc858c000-7f0dc858d000 rw-p 00015000 08:05 1704093
>>>> >>>> /lib64/libgcc_s-4.4.5.so.1
>>>> >>>> 7f0dc858d000-7f0dc87ad000 rw-s 00000000 00:04 84148247
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7f0dc87ad000-7f0dc87b9000 r-xp 00000000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7f0dc87b9000-7f0dc89b8000 ---p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7f0dc89b8000-7f0dc89b9000 r--p 0000b000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7f0dc89b9000-7f0dc89ba000 rw-p 0000c000 08:05 1704191
>>>> >>>> /lib64/libnss_files-2.11.1.so
>>>> >>>> 7f0dc89ba000-7f0dc89bc000 r-xp 00000000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7f0dc89bc000-7f0dc8bbb000 ---p 00002000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7f0dc8bbb000-7f0dc8bbc000 rw-p 00001000 08:05 1704176
>>>> >>>> /lib64/libkeyutils-1.2.so
>>>> >>>> 7f0dc8bbc000-7f0dc8bc4000 r-xp 00000000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7f0dc8bc4000-7f0dc8dc3000 ---p 00008000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7f0dc8dc3000-7f0dc8dc4000 rw-p 00007000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>> 7f0dc8dc4000-7f0dc8dc6000 r-xp 00000000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7f0dc8dc6000-7f0dc8fc6000 ---p 00002000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7f0dc8fc6000-7f0dc8fc7000 r--p 00002000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7f0dc8fc7000-7f0dc8fc8000 rw-p 00003000 08:05 1704128
>>>> >>>> /lib64/libdl-2.11.1.so
>>>> >>>> 7f0dc8fc8000-7f0dc8fef000 r-xp 00000000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7f0dc8fef000-7f0dc91ee000 ---p 00027000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7f0dc91ee000-7f0dc91f0000 rw-p 00026000 08:05 1704166
>>>> >>>> /lib64/libk5crypto.so.3.1
>>>> >>>> 7f0dc91f0000-7f0dc91f3000 r-xp 00000000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7f0dc91f3000-7f0dc93f2000 ---p 00003000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7f0dc93f2000-7f0dc93f3000 rw-p 00002000 08:05 1704103
>>>> >>>> /lib64/libcom_err.so.2.1
>>>> >>>> 7f0dc93f3000-7f0dc94c1000 r-xp 00000000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7f0dc94c1000-7f0dc96c0000 ---p 000ce000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7f0dc96c0000-7f0dc96cb000 rw-p 000cd000 08:05 1704179
>>>> >>>> /lib64/libkrb5.so.3.3
>>>> >>>> 7f0dc96cb000-7f0dc9703000 r-xp 00000000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7f0dc9703000-7f0dc9902000 ---p 00038000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7f0dc9902000-7f0dc9904000 rw-p 00037000 08:05 1704152
>>>> >>>> /lib64/libgssapi_krb5.so.2.2
>>>> >>>> 7f0dc9904000-7f0dc9960000 r-xp 00000000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7f0dc9960000-7f0dc9b5f000 ---p 0005c000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7f0dc9b5f000-7f0dc9b61000 rw-p 0005b000 08:05 1970855
>>>> >>>> /usr/lib64/libfreebl3.so
>>>> >>>> 7f0dc9b61000-7f0dc9b65000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dc9b65000-7f0dc9cfb000 r-xp 00000000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7f0dc9cfb000-7f0dc9efa000 ---p 00196000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7f0dc9efa000-7f0dc9f1d000 rw-p 00195000 08:05 1703939
>>>> >>>> /lib64/libcrypto.so.1.0.0l
>>>> >>>> 7f0dc9f1d000-7f0dc9f21000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dc9f21000-7f0dc9f7c000 r-xp 00000000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7f0dc9f7c000-7f0dca17b000 ---p 0005b000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7f0dca17b000-7f0dca183000 rw-p 0005a000 08:05 1703951
>>>> >>>> /lib64/libssl.so.1.0.0l
>>>> >>>> 7f0dca183000-7f0dca2f4000 r-xp 00000000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7f0dca2f4000-7f0dca4f4000 ---p 00171000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7f0dca4f4000-7f0dca4f8000 r--p 00171000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7f0dca4f8000-7f0dca4f9000 rw-p 00175000 08:05 1703946
>>>> >>>> /lib64/libc-2.11.1.so
>>>> >>>> 7f0dca4f9000-7f0dca4fe000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dca4fe000-7f0dca580000 r-xp 00000000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7f0dca580000-7f0dca77f000 ---p 00082000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7f0dca77f000-7f0dca780000 r--p 00081000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7f0dca780000-7f0dca781000 rw-p 00082000 08:05 1704182
>>>> >>>> /lib64/libm-2.11.1.so
>>>> >>>> 7f0dca781000-7f0dca797000 r-xp 00000000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7f0dca797000-7f0dca996000 ---p 00016000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7f0dca996000-7f0dca997000 r--p 00015000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7f0dca997000-7f0dca998000 rw-p 00016000 08:05 1704185
>>>> >>>> /lib64/libnsl-2.11.1.so
>>>> >>>> 7f0dca998000-7f0dca99a000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dca99a000-7f0dca9b0000 r-xp 00000000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7f0dca9b0000-7f0dcabaf000 ---p 00016000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7f0dcabaf000-7f0dcabb0000 r--p 00015000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7f0dcabb0000-7f0dcabb1000 rw-p 00016000 08:05 1704202
>>>> >>>> /lib64/libresolv-2.11.1.so
>>>> >>>> 7f0dcabb1000-7f0dcabb3000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dcabb3000-7f0dcabba000 r-xp 00000000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7f0dcabba000-7f0dcadba000 ---p 00007000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7f0dcadba000-7f0dcadbb000 r--p 00007000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7f0dcadbb000-7f0dcadbc000 rw-p 00008000 08:05 1703950
>>>> >>>> /lib64/libcrypt-2.11.1.so
>>>> >>>> 7f0dcadbc000-7f0dcadea000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dcadea000-7f0dcae01000 r-xp 00000000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7f0dcae01000-7f0dcb000000 ---p 00017000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7f0dcb000000-7f0dcb001000 r--p 00016000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7f0dcb001000-7f0dcb002000 rw-p 00017000 08:05 1703970
>>>> >>>> /lib64/libpthread-2.11.1.so
>>>> >>>> 7f0dcb002000-7f0dcb006000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dcb025000-7f0dcb02c000 r-xp 00000000 08:05 2635363
>>>> >>>> /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7f0dcb02c000-7f0dcb22c000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07f0dcb02c000-7f0dcb22c000>---p
>>>> 00007000 08:05 2635363 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7f0dcb22c000-7f0dcb22d000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07f0dcb22c000-7f0dcb22d000>rw-p
>>>> 00007000 08:05 2635363 /home/t-ishii/work/
>>>> >>>>
>>>> git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.0
>>>> >>>> 7f0dcb22d000-7f0dcb255000<
>>>> http://git.postgresql.org/pgpool2/src/test/regression/temp/installed/lib/libpcp.so.0.0.07f0dcb22d000-7f0dcb255000>r-xp
>>>> 00000000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7f0dcb255000-7f0dcb454000 ---p 00028000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7f0dcb454000-7f0dcb457000 rw-p 00027000 08:05 2004750
>>>> >>>> /usr/local/pgsql/lib/libpq.so.5.6
>>>> >>>> 7f0dcb457000-7f0dcb475000 r-xp 00000000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7f0dcb658000-7f0dcb659000 rw-s 00000000 00:04 84246555
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7f0dcb659000-7f0dcb65a000 rw-s 00000000 00:04 84213786
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7f0dcb65a000-7f0dcb65b000 rw-s 00000000 00:04 84181017
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7f0dcb65b000-7f0dcb669000 rw-s 00000000 00:04 84115478
>>>> >>>> /SYSV00000000 (deleted)
>>>> >>>> 7f0dcb669000-7f0dcb674000 rw-p 00000000 00:00 0
>>>> >>>> 7f0dcb674000-7f0dcb675000 r--p 0001d000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7f0dcb675000-7f0dcb676000 rw-p 0001e000 08:05 1703940
>>>> >>>> /lib64/ld-2.11.1.so
>>>> >>>> 7f0dcb676000-7f0dcb677000 rw-p 00000000 00:00 0
>>>> >>>> 7fff746e1000-7fff74702000 rw-p 00000000 00:00 0
>>>> >>>> [stack]
>>>> >>>> 7fff747ff000-7fff74800000 r-xp 00000000 00:00 0
>>>> >>>> [vdso]
>>>> >>>> ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
>>>> >>>> [vsyscall]
>>>> >>>> 7fd290c92000-7fd290c9a000 r-xp 00000000 08:05 1704181
>>>> >>>> /lib64/libkrb5support.so.0.1
>>>> >>>>
>>>> >>>>
>>>> >>>
>>>> >>
>>>>
>>>
>>>
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