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copy.c

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    • Tom Lane's avatar
      0a51e707
      Don't take ProcArrayLock while exiting a transaction that has no XID; there is · 0a51e707
      Tom Lane authored 
      no need for serialization against snapshot-taking because the xact doesn't
affect anyone else's snapshot anyway.  Per discussion.  Also, move various
info about the interlocking of transactions and snapshots out of code comments
and into a hopefully-more-cohesive discussion in access/transam/README.

Also, remove a couple of now-obsolete comments about having to force some WAL
to be written to persuade RecordTransactionCommit to do its thing.
      0a51e707
      History
      Don't take ProcArrayLock while exiting a transaction that has no XID; there is
      Tom Lane authored 
      no need for serialization against snapshot-taking because the xact doesn't
affect anyone else's snapshot anyway.  Per discussion.  Also, move various
info about the interlocking of transactions and snapshots out of code comments
and into a hopefully-more-cohesive discussion in access/transam/README.

Also, remove a couple of now-obsolete comments about having to force some WAL
to be written to persuade RecordTransactionCommit to do its thing.