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postgres-lambda-diff
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Tom Lane
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TopMemoryContext, rather than scattered through executor per-query contexts. This poses no danger of memory leak since the ResourceOwner mechanism guarantees release of no-longer-needed items. It is needed because the per-query context might already be released by the time we try to clean up the hash scan list. Report by ykhuang, diagnosis by Heikki. Back-patch to 8.0, where the ResourceOwner-based cleanup was introduced. The given test case does not fail before 8.2, probably because we rearranged transaction abort processing somehow; but this coding is undoubtedly risky so I'll patch 8.0 and 8.1 anyway.
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