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Make GIN's cleanup pending list process interruptable
Cleanup process could be called by ordinary insert/update and could take a lot of time. Add vacuum_delay_point() to make this process interruptable. Under vacuum this call will also throttle a vacuum process to decrease system load, called from insert/update it will not throttle, and that reduces a latency. Backpatch for all supported branches. Jeff Janes <jeff.janes@gmail.com>
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@ -794,7 +794,6 @@ ginInsertCleanup(GinState *ginstate,
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*/
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processPendingPage(&accum, &datums, page, FirstOffsetNumber);
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if (vac_delay)
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vacuum_delay_point();
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/*
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@ -835,7 +834,6 @@ ginInsertCleanup(GinState *ginstate,
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{
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ginEntryInsert(ginstate, attnum, key, category,
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list, nlist, NULL);
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if (vac_delay)
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vacuum_delay_point();
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}
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@ -916,7 +914,7 @@ ginInsertCleanup(GinState *ginstate,
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/*
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* Read next page in pending list
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*/
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CHECK_FOR_INTERRUPTS();
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vacuum_delay_point();
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buffer = ReadBuffer(index, blkno);
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LockBuffer(buffer, GIN_SHARE);
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page = BufferGetPage(buffer);
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