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69e7235c93
This module needs explicit initialization in order to replay WAL records in recovery, but we had broken this recently following changes to make other (stranger) scenarios work correctly. To fix, rework the initialization sequence so that it always takes place before WAL replay commences for both master and standby. I could have gone for a more localized fix that just added a "startup" call for the master server, but it seemed better to restructure the existing callers as well so that the whole thing made more sense. As a drawback, there is more control logic in xlog.c now than previously, but doing otherwise meant passing down the ControlFile flag, which seemed uglier as a whole. This also meant adding a check to not re-execute ActivateCommitTs if it had already been called. Reported by Fujii Masao. Backpatch to 9.5.
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/*
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* commit_ts.h
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*
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* PostgreSQL commit timestamp manager
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*
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* Portions Copyright (c) 1996-2015, 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/access/commit_ts.h
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*/
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#ifndef COMMIT_TS_H
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#define COMMIT_TS_H
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#include "access/xlog.h"
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#include "datatype/timestamp.h"
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#include "replication/origin.h"
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#include "utils/guc.h"
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extern PGDLLIMPORT bool track_commit_timestamp;
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extern bool check_track_commit_timestamp(bool *newval, void **extra,
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GucSource source);
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extern void TransactionTreeSetCommitTsData(TransactionId xid, int nsubxids,
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TransactionId *subxids, TimestampTz timestamp,
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RepOriginId nodeid, bool write_xlog);
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extern bool TransactionIdGetCommitTsData(TransactionId xid,
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TimestampTz *ts, RepOriginId *nodeid);
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extern TransactionId GetLatestCommitTsData(TimestampTz *ts,
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RepOriginId *nodeid);
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extern Size CommitTsShmemBuffers(void);
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extern Size CommitTsShmemSize(void);
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extern void CommitTsShmemInit(void);
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extern void BootStrapCommitTs(void);
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extern void StartupCommitTs(void);
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extern void CommitTsParameterChange(bool xlrecvalue, bool pgcontrolvalue);
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extern void CompleteCommitTsInitialization(void);
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extern void ShutdownCommitTs(void);
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extern void CheckPointCommitTs(void);
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extern void ExtendCommitTs(TransactionId newestXact);
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extern void TruncateCommitTs(TransactionId oldestXact);
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extern void SetCommitTsLimit(TransactionId oldestXact,
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TransactionId newestXact);
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extern void AdvanceOldestCommitTs(TransactionId oldestXact);
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/* XLOG stuff */
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#define COMMIT_TS_ZEROPAGE 0x00
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#define COMMIT_TS_TRUNCATE 0x10
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#define COMMIT_TS_SETTS 0x20
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typedef struct xl_commit_ts_set
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{
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TimestampTz timestamp;
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RepOriginId nodeid;
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TransactionId mainxid;
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/* subxact Xids follow */
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} xl_commit_ts_set;
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#define SizeOfCommitTsSet (offsetof(xl_commit_ts_set, mainxid) + \
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sizeof(TransactionId))
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extern void commit_ts_redo(XLogReaderState *record);
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extern void commit_ts_desc(StringInfo buf, XLogReaderState *record);
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extern const char *commit_ts_identify(uint8 info);
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#endif /* COMMIT_TS_H */
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