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fix single tuple result memory leak (#6724) 

We should not omit to free PGResult when we receive single tuple result
from an internal backend.
Single tuple results are normally freed by our ReceiveResults for
`tupleDescriptor != NULL` flow but not for those with `tupleDescriptor
== NULL`. See PR #6722 for details.

DESCRIPTION: Fixes memory leak issue with query results that returns
single row.
pull/6714/head^2
aykut-bozkurt 2023-02-17 14:15:09 +03:00 committed by GitHub
parent ca65d2ba0b
commit 9e69dd0e7f
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src/backend/distributed/executor/adaptive_executor.c
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@ -4777,6 +4777,7 @@ ReceiveResults(WorkerSession *session, bool storeRows)
TupleDesc tupleDescriptor = tupleDest->tupleDescForQuery(tupleDest, queryIndex);
if (tupleDescriptor == NULL)
{
PQclear(result);
continue;
}