[pgpool-committers: 7789] pgpool: Fix occasional failure of 028.watchdog_enable_consensus_with_ha

[Tatsuo Ishii]

Fix occasional failure of 028.watchdog_enable_consensus_with_half_votes test.

It seems the failure was caused in this scenario:

Testing total nodes: 4. enable_consensus_with_half_of_the_votes: on
shutdown node pgpool2
2021-05-30 07:41:54: main pid 28819: LOG:  stop request sent to pgpool. waiting for termination....done.
shutdown node pgpool1
2021-05-30 07:41:56: main pid 28825: LOG:  stop request sent to pgpool. waiting for termination....done.
Quorum does not exist. Test failed

So the test failed at 07:41:56. In the mean time pgpool.log showed:
2021-05-30 07:41:54: watchdog pid 28569: LOG:  We have lost the cluster leader node "localhost:50008 Linux e1aa95e1fe13"
:
:
2021-05-30 07:41:59: watchdog pid 28569: LOG:  watchdog node state changed from [STANDING FOR LEADER] to [LEADER]
2021-05-30 07:41:59: watchdog pid 28569: LOG:  I am announcing my self as leader/coordinator watchdog node

The quorum was established at 07:41:59. That means the test for quorum
existence was too early.

To fix this, insert "sleep 5" after shutting down pgpool.

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=a52dfd196b2fd64eaab3e3c1e06f18ca78f5cca4

Modified Files
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.../tests/028.watchdog_enable_consensus_with_half_votes/test.sh     | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)