pgsql: Fix oversight in coding of _bt_start_vacuum: we can't assume that

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От tgl@postgresql.org (Tom Lane)
Тема pgsql: Fix oversight in coding of _bt_start_vacuum: we can't assume that
Дата
Msg-id 20070330001305.6D6AC9FBBCC@postgresql.org
обсуждение исходный текст
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Log Message:
-----------
Fix oversight in coding of _bt_start_vacuum: we can't assume that the LWLock
will be released by transaction abort before _bt_end_vacuum gets called.
If either of these "can't happen" errors actually happened, we'd freeze up
trying to acquire an already-held lock.  Latest word is that this does
not explain Martin Pitt's trouble report, but it still looks like a bug.

Tags:
----
REL8_2_STABLE

Modified Files:
--------------
    pgsql/src/backend/access/nbtree:
        nbtutils.c (r1.79 -> r1.79.2.1)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/nbtree/nbtutils.c.diff?r1=1.79&r2=1.79.2.1)

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