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Andres Freund
93ea78b17c
In a race case, EXPLAIN ANALYZE could fail to display correct nbatch and size information. Refactor so that participants report only on batches they worked on rather than trying to report on all of them, and teach explain.c to consider the HashInstrumentation object from all participants instead of picking the first one it can find. This should fix an occasional build farm failure in the "join" regression test. Author: Thomas Munro Reviewed-By: Andres Freund Discussion: https://postgr.es/m/30219.1514428346%40sss.pgh.pa.us
80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* nodeHash.h
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* prototypes for nodeHash.c
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*
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*
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* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/executor/nodeHash.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEHASH_H
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#define NODEHASH_H
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#include "access/parallel.h"
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#include "nodes/execnodes.h"
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struct SharedHashJoinBatch;
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extern HashState *ExecInitHash(Hash *node, EState *estate, int eflags);
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extern Node *MultiExecHash(HashState *node);
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extern void ExecEndHash(HashState *node);
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extern void ExecReScanHash(HashState *node);
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extern HashJoinTable ExecHashTableCreate(HashState *state, List *hashOperators,
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bool keepNulls);
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extern void ExecParallelHashTableAlloc(HashJoinTable hashtable,
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int batchno);
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extern void ExecHashTableDestroy(HashJoinTable hashtable);
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extern void ExecHashTableDetach(HashJoinTable hashtable);
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extern void ExecHashTableDetachBatch(HashJoinTable hashtable);
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extern void ExecParallelHashTableSetCurrentBatch(HashJoinTable hashtable,
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int batchno);
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extern void ExecHashTableInsert(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern void ExecParallelHashTableInsert(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern void ExecParallelHashTableInsertCurrentBatch(HashJoinTable hashtable,
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TupleTableSlot *slot,
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uint32 hashvalue);
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extern bool ExecHashGetHashValue(HashJoinTable hashtable,
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ExprContext *econtext,
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List *hashkeys,
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bool outer_tuple,
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bool keep_nulls,
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uint32 *hashvalue);
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extern void ExecHashGetBucketAndBatch(HashJoinTable hashtable,
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uint32 hashvalue,
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int *bucketno,
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int *batchno);
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extern bool ExecScanHashBucket(HashJoinState *hjstate, ExprContext *econtext);
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extern bool ExecParallelScanHashBucket(HashJoinState *hjstate, ExprContext *econtext);
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extern void ExecPrepHashTableForUnmatched(HashJoinState *hjstate);
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extern bool ExecScanHashTableForUnmatched(HashJoinState *hjstate,
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ExprContext *econtext);
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extern void ExecHashTableReset(HashJoinTable hashtable);
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extern void ExecHashTableResetMatchFlags(HashJoinTable hashtable);
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extern void ExecChooseHashTableSize(double ntuples, int tupwidth, bool useskew,
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bool try_combined_work_mem,
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int parallel_workers,
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size_t *space_allowed,
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int *numbuckets,
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int *numbatches,
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int *num_skew_mcvs);
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extern int ExecHashGetSkewBucket(HashJoinTable hashtable, uint32 hashvalue);
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extern void ExecHashEstimate(HashState *node, ParallelContext *pcxt);
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extern void ExecHashInitializeDSM(HashState *node, ParallelContext *pcxt);
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extern void ExecHashInitializeWorker(HashState *node, ParallelWorkerContext *pwcxt);
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extern void ExecHashRetrieveInstrumentation(HashState *node);
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extern void ExecShutdownHash(HashState *node);
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extern void ExecHashGetInstrumentation(HashInstrumentation *instrument,
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HashJoinTable hashtable);
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#endif /* NODEHASH_H */
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