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Remove old-style VACUUM FULL (which was known for a little while as
VACUUM FULL INPLACE), along with a boatload of subsidiary code and complexity. Per discussion, the use case for this method of vacuuming is no longer large enough to justify maintaining it; not to mention that we don't wish to invest the work that would be needed to make it play nicely with Hot Standby. Aside from the code directly related to old-style VACUUM FULL, this commit removes support for certain WAL record types that could only be generated within VACUUM FULL, redirect-pointer removal in heap_page_prune, and nontransactional generation of cache invalidation sinval messages (the last being the sticking point for Hot Standby). We still have to retain all code that copes with finding HEAP_MOVED_OFF and HEAP_MOVED_IN flag bits on existing tuples. This can't be removed as long as we want to support in-place update from pre-9.0 databases.
This commit is contained in:
Tom Lane
@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/genam.h,v 1.82 2010/01/02 16:58:00 momjian Exp $
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* $PostgreSQL: pgsql/src/include/access/genam.h,v 1.83 2010/02/08 04:33:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -42,7 +42,6 @@ typedef struct IndexBuildResult
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typedef struct IndexVacuumInfo
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{
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Relation index; /* the index being vacuumed */
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bool vacuum_full; /* VACUUM FULL (we have exclusive lock) */
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bool analyze_only; /* ANALYZE (without any actual vacuum) */
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bool estimated_count; /* num_heap_tuples is an estimate */
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int message_level; /* ereport level for progress messages */
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@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.146 2010/01/02 16:58:00 momjian Exp $
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* $PostgreSQL: pgsql/src/include/access/heapam.h,v 1.147 2010/02/08 04:33:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -126,17 +126,13 @@ extern void heap_desc(StringInfo buf, uint8 xl_info, char *rec);
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extern void heap2_redo(XLogRecPtr lsn, XLogRecord *rptr);
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extern void heap2_desc(StringInfo buf, uint8 xl_info, char *rec);
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extern XLogRecPtr log_heap_move(Relation reln, Buffer oldbuf,
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ItemPointerData from,
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Buffer newbuf, HeapTuple newtup,
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bool all_visible_cleared, bool new_all_visible_cleared);
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extern XLogRecPtr log_heap_cleanup_info(RelFileNode rnode,
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TransactionId latestRemovedXid);
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extern XLogRecPtr log_heap_clean(Relation reln, Buffer buffer,
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OffsetNumber *redirected, int nredirected,
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OffsetNumber *nowdead, int ndead,
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OffsetNumber *nowunused, int nunused,
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TransactionId latestRemovedXid, bool redirect_move);
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TransactionId latestRemovedXid);
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extern XLogRecPtr log_heap_freeze(Relation reln, Buffer buffer,
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TransactionId cutoff_xid,
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OffsetNumber *offsets, int offcnt);
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@@ -148,12 +144,11 @@ extern void heap_page_prune_opt(Relation relation, Buffer buffer,
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TransactionId OldestXmin);
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extern int heap_page_prune(Relation relation, Buffer buffer,
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TransactionId OldestXmin,
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bool redirect_move, bool report_stats);
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bool report_stats);
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extern void heap_page_prune_execute(Buffer buffer,
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OffsetNumber *redirected, int nredirected,
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OffsetNumber *nowdead, int ndead,
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OffsetNumber *nowunused, int nunused,
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bool redirect_move);
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OffsetNumber *nowunused, int nunused);
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extern void heap_get_root_tuples(Page page, OffsetNumber *root_offsets);
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/* in heap/syncscan.c */
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@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.110 2010/01/10 04:26:36 rhaas Exp $
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* $PostgreSQL: pgsql/src/include/access/htup.h,v 1.111 2010/02/08 04:33:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -74,11 +74,11 @@
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* transaction respectively. If a tuple is inserted and deleted in the same
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* transaction, we store a "combo" command id that can be mapped to the real
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* cmin and cmax, but only by use of local state within the originating
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* backend. See combocid.c for more details. Meanwhile, Xvac is only set
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* by VACUUM FULL, which does not have any command sub-structure and so does
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* not need either Cmin or Cmax. (This requires that VACUUM FULL never try
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* to move a tuple whose Cmin or Cmax is still interesting, ie, an insert-
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* in-progress or delete-in-progress tuple.)
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* backend. See combocid.c for more details. Meanwhile, Xvac is only set by
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* old-style VACUUM FULL, which does not have any command sub-structure and so
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* does not need either Cmin or Cmax. (This requires that old-style VACUUM
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* FULL never try to move a tuple whose Cmin or Cmax is still interesting,
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* ie, an insert-in-progress or delete-in-progress tuple.)
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*
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* A word about t_ctid: whenever a new tuple is stored on disk, its t_ctid
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* is initialized with its own TID (location). If the tuple is ever updated,
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@@ -111,7 +111,7 @@ typedef struct HeapTupleFields
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union
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{
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CommandId t_cid; /* inserting or deleting command ID, or both */
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TransactionId t_xvac; /* VACUUM FULL xact ID */
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TransactionId t_xvac; /* old-style VACUUM FULL xact ID */
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} t_field3;
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} HeapTupleFields;
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@@ -175,10 +175,10 @@ typedef HeapTupleHeaderData *HeapTupleHeader;
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#define HEAP_XMAX_INVALID 0x0800 /* t_xmax invalid/aborted */
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#define HEAP_XMAX_IS_MULTI 0x1000 /* t_xmax is a MultiXactId */
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#define HEAP_UPDATED 0x2000 /* this is UPDATEd version of row */
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#define HEAP_MOVED_OFF 0x4000 /* moved to another place by VACUUM
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* FULL */
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#define HEAP_MOVED_IN 0x8000 /* moved from another place by VACUUM
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* FULL */
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#define HEAP_MOVED_OFF 0x4000 /* moved to another place by
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* old-style VACUUM FULL */
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#define HEAP_MOVED_IN 0x8000 /* moved from another place by
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* old-style VACUUM FULL */
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#define HEAP_MOVED (HEAP_MOVED_OFF | HEAP_MOVED_IN)
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#define HEAP_XACT_MASK 0xFFE0 /* visibility-related bits */
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@@ -559,7 +559,7 @@ typedef HeapTupleData *HeapTuple;
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#define XLOG_HEAP_INSERT 0x00
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#define XLOG_HEAP_DELETE 0x10
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#define XLOG_HEAP_UPDATE 0x20
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#define XLOG_HEAP_MOVE 0x30
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/* 0x030 is free, was XLOG_HEAP_MOVE */
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#define XLOG_HEAP_HOT_UPDATE 0x40
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#define XLOG_HEAP_NEWPAGE 0x50
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#define XLOG_HEAP_LOCK 0x60
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@@ -579,7 +579,7 @@ typedef HeapTupleData *HeapTuple;
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*/
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#define XLOG_HEAP2_FREEZE 0x00
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#define XLOG_HEAP2_CLEAN 0x10
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#define XLOG_HEAP2_CLEAN_MOVE 0x20
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/* 0x20 is free, was XLOG_HEAP2_CLEAN_MOVE */
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#define XLOG_HEAP2_CLEANUP_INFO 0x30
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/*
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@@ -634,15 +634,14 @@ typedef struct xl_heap_insert
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#define SizeOfHeapInsert (offsetof(xl_heap_insert, all_visible_cleared) + sizeof(bool))
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/* This is what we need to know about update|move|hot_update */
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/* This is what we need to know about update|hot_update */
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typedef struct xl_heap_update
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{
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xl_heaptid target; /* deleted tuple id */
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ItemPointerData newtid; /* new inserted tuple id */
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bool all_visible_cleared; /* PD_ALL_VISIBLE was cleared */
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bool new_all_visible_cleared; /* same for the page of newtid */
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/* NEW TUPLE xl_heap_header (PLUS xmax & xmin IF MOVE OP) */
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/* and TUPLE DATA FOLLOWS AT END OF STRUCT */
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bool new_all_visible_cleared; /* same for the page of newtid */
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/* NEW TUPLE xl_heap_header AND TUPLE DATA FOLLOWS AT END OF STRUCT */
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} xl_heap_update;
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#define SizeOfHeapUpdate (offsetof(xl_heap_update, new_all_visible_cleared) + sizeof(bool))
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@@ -657,13 +656,6 @@ typedef struct xl_heap_update
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* The total number of OffsetNumbers is therefore 2*nredirected+ndead+nunused.
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* Note that nunused is not explicitly stored, but may be found by reference
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* to the total record length.
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*
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* If the opcode is CLEAN_MOVE instead of CLEAN, then each redirection pair
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* should be interpreted as physically moving the "to" item pointer to the
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* "from" slot, rather than placing a redirection item in the "from" slot.
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* The moved pointers should be replaced by LP_UNUSED items (there will not
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* be explicit entries in the "now-unused" list for this). Also, the
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* HEAP_ONLY bit in the moved tuples must be turned off.
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*/
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typedef struct xl_heap_clean
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{
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@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/nbtree.h,v 1.127 2010/01/02 16:58:00 momjian Exp $
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* $PostgreSQL: pgsql/src/include/access/nbtree.h,v 1.128 2010/02/08 04:33:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -577,8 +577,7 @@ extern bool _bt_page_recyclable(Page page);
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extern void _bt_delitems(Relation rel, Buffer buf,
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OffsetNumber *itemnos, int nitems, bool isVacuum,
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BlockNumber lastBlockVacuumed);
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extern int _bt_pagedel(Relation rel, Buffer buf,
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BTStack stack, bool vacuum_full);
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extern int _bt_pagedel(Relation rel, Buffer buf, BTStack stack);
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/*
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* prototypes for functions in nbtsearch.c
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@@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/xact.h,v 1.100 2010/01/02 16:58:00 momjian Exp $
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* $PostgreSQL: pgsql/src/include/access/xact.h,v 1.101 2010/02/08 04:33:54 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@@ -119,12 +119,10 @@ typedef struct xl_xact_commit
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* transaction completion.
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*/
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#define XACT_COMPLETION_UPDATE_RELCACHE_FILE 0x01
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#define XACT_COMPLETION_VACUUM_FULL 0x02
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#define XACT_COMPLETION_FORCE_SYNC_COMMIT 0x04
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/* Access macros for above flags */
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#define XactCompletionRelcacheInitFileInval(xlrec) ((xlrec)->xinfo & XACT_COMPLETION_UPDATE_RELCACHE_FILE)
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#define XactCompletionVacuumFull(xlrec) ((xlrec)->xinfo & XACT_COMPLETION_VACUUM_FULL)
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#define XactCompletionForceSyncCommit(xlrec) ((xlrec)->xinfo & XACT_COMPLETION_FORCE_SYNC_COMMIT)
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typedef struct xl_xact_abort
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@@ -212,8 +210,6 @@ extern void UnregisterXactCallback(XactCallback callback, void *arg);
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extern void RegisterSubXactCallback(SubXactCallback callback, void *arg);
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extern void UnregisterSubXactCallback(SubXactCallback callback, void *arg);
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extern TransactionId RecordTransactionCommit(bool isVacuumFull);
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extern int xactGetCommittedChildren(TransactionId **ptr);
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extern void xact_redo(XLogRecPtr lsn, XLogRecord *record);
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@@ -6,7 +6,7 @@
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* Portions Copyright (c) 1996-2010, 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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* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.101 2010/02/01 13:40:28 sriggs Exp $
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* $PostgreSQL: pgsql/src/include/access/xlog.h,v 1.102 2010/02/08 04:33:54 tgl Exp $
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*/
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#ifndef XLOG_H
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#define XLOG_H
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@@ -249,7 +249,6 @@ extern char *TriggerFile;
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extern XLogRecPtr XLogInsert(RmgrId rmid, uint8 info, XLogRecData *rdata);
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extern void XLogFlush(XLogRecPtr RecPtr);
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extern void XLogBackgroundFlush(void);
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extern void XLogAsyncCommitFlush(void);
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extern bool XLogNeedsFlush(XLogRecPtr RecPtr);
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extern int XLogFileInit(uint32 log, uint32 seg,
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bool *use_existent, bool use_lock);
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