[Pgpool-general] EXPLAIN statement fails on 'kind mismatch'

Tatsuo Ishii ishii at sraoss.co.jp
Sun Dec 6 10:01:12 UTC 2009


> hello
> 
> after 2 weeks pgpool-II (2.25) was working good,
> I now have:
> 'kind mismatch among backends. Possible last query was: "EXPLAIN SELECT *
> FROM ycore.transfer_record WHERE
> transfer_record_id>400" kind details are: 0[D] 1[C]'
> 
> just when we wanted to move to production.
> 
> all other things still work, also 'EXPLAIN' on other tables,
> (also same query on this table worked until now)
> I have full logs of pgpool + 2 postgres backends
> how can I find out whats wrong ?

Can you show me the outputs of EXPAIN which are executed directly on
postgres backends? My bet is, there are dead tuples difference between
backends which cause execution plan differences.
--
Tatsuo Ishii
SRA OSS, Inc. Japan


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