Re: parallel pg_dump causes assertion failure in HEAD

On 2014-03-05 12:07:43 -0500, Tom Lane wrote:
> $ pg_dump -F d -j 4 -f foo regression
> pg_dump: [archiver (db)] query failed: pg_dump: [parallel archiver] query was: SET TRANSACTION SNAPSHOT '00002130-1'
> pg_dump: [archiver (db)] query failed: pg_dump: [archiver (db)] query failed: pg_dump: [archiver (db)] query failed:
$
> 
> postmaster log shows:
> 
> TRAP: FailedAssertion("!(HistoricSnapshotActive())", File: "snapmgr.c", Line: 355)
> TRAP: FailedAssertion("!(HistoricSnapshotActive())", File: "snapmgr.c", Line: 355)
> TRAP: FailedAssertion("!(HistoricSnapshotActive())", File: "snapmgr.c", Line: 355)
> TRAP: FailedAssertion("!(HistoricSnapshotActive())", File: "snapmgr.c", Line: 355)
> LOG:  server process (PID 15069) was terminated by signal 6: Aborted
> DETAIL:  Failed process was running: SET TRANSACTION SNAPSHOT '00002130-1'
> LOG:  terminating any other active server processes
> 
> That Assert appears to have been introduced by commit b89e1510.

Will have a look in an hour or two.

Greetings,

Andres Freund

-- Andres Freund                       http://www.2ndQuadrant.com/PostgreSQL Development, 24x7 Support, Training &
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