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Commit08c23f4

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Initialize index stats during parallel VACUUM.
Initialize shared memory allocated for index stats to avoid a hardcrash. This was possible when parallel VACUUM became confused about thecurrent phase of index processing.Oversight in commit8e1fae1, which refactored parallel VACUUM.Author: Masahiko Sawada <sawada.mshk@gmail.com>Reported-By: Justin Pryzby <pryzby@telsasoft.com>Discussion:https://postgr.es/m/20220818133406.GL26426@telsasoft.comBackpatch: 15-, the first version with the refactoring commit.
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‎src/backend/commands/vacuumparallel.c

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@@ -317,6 +317,7 @@ parallel_vacuum_init(Relation rel, Relation *indrels, int nindexes,
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/* Prepare index vacuum stats */
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indstats= (PVIndStats*)shm_toc_allocate(pcxt->toc,est_indstats_len);
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MemSet(indstats,0,est_indstats_len);
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for (inti=0;i<nindexes;i++)
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{
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Relationindrel=indrels[i];

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