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Make sure that GIN fast-insert and regular code paths enforce the same 

tuple size limit.  Improve the error message for index-tuple-too-large
so that it includes the actual size, the limit, and the index name.
Sync with the btree occurrences of the same error.

Back-patch to 8.4 because it appears that the out-of-sync problem
is occurring in the field.

Teodor and Tom
This commit is contained in:
Tom Lane 2009-10-02 21:14:04 +00:00
parent d691cb9141
commit e66d714386
7 changed files with 72 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

52
src/backend/access/gin/ginentrypage.c
View File

@ -8,20 +8,22 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginentrypage.c,v 1.21 2009/06/11 14:48:53 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginentrypage.c,v 1.22 2009/10/02 21:14:04 tgl Exp $
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "access/gin.h"
#include "access/tuptoaster.h"
#include "storage/bufmgr.h"
#include "utils/rel.h"
/*
* Form a tuple for entry tree.
*
* If the tuple would be too big to be stored, function throws a suitable
* error if errorTooBig is TRUE, or returns NULL if errorTooBig is FALSE.
*
* On leaf pages, Index tuple has non-traditional layout. Tuple may contain
* posting list or root blocknumber of posting tree.
* Macros: GinIsPostingTree(itup) / GinSetPostingTree(itup, blkno)
@ -49,10 +51,13 @@
* and value.
*/
IndexTuple
GinFormTuple(GinState *ginstate, OffsetNumber attnum, Datum key, ItemPointerData *ipd, uint32 nipd)
GinFormTuple(Relation index, GinState *ginstate,
OffsetNumber attnum, Datum key,
ItemPointerData *ipd, uint32 nipd, bool errorTooBig)
{
bool isnull[2] = {FALSE, FALSE};
IndexTuple itup;
uint32 newsize;
if (ginstate->oneCol)
itup = index_form_tuple(ginstate->origTupdesc, &key, isnull);
@ -69,13 +74,19 @@ GinFormTuple(GinState *ginstate, OffsetNumber attnum, Datum key, ItemPointerData
if (nipd > 0)
{
uint32 newsize = MAXALIGN(SHORTALIGN(IndexTupleSize(itup)) + sizeof(ItemPointerData) * nipd);
if (newsize >= INDEX_SIZE_MASK)
return NULL;
if (newsize > TOAST_INDEX_TARGET && nipd > 1)
newsize = MAXALIGN(SHORTALIGN(IndexTupleSize(itup)) + sizeof(ItemPointerData) * nipd);
if (newsize > Min(INDEX_SIZE_MASK, GinMaxItemSize))
{
if (errorTooBig)
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds maximum %lu for index \"%s\"",
(unsigned long) newsize,
(unsigned long) Min(INDEX_SIZE_MASK,
GinMaxItemSize),
RelationGetRelationName(index))));
return NULL;
}
itup = repalloc(itup, newsize);
@ -89,6 +100,29 @@ GinFormTuple(GinState *ginstate, OffsetNumber attnum, Datum key, ItemPointerData
}
else
{
/*
* Gin tuple without any ItemPointers should be large enough to keep
* one ItemPointer, to prevent inconsistency between
* ginHeapTupleFastCollect and ginEntryInsert called by
* ginHeapTupleInsert. ginHeapTupleFastCollect forms tuple without
* extra pointer to heap, but ginEntryInsert (called for pending list
* cleanup during vacuum) will form the same tuple with one
* ItemPointer.
*/
newsize = MAXALIGN(SHORTALIGN(IndexTupleSize(itup)) + sizeof(ItemPointerData));
if (newsize > Min(INDEX_SIZE_MASK, GinMaxItemSize))
{
if (errorTooBig)
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds maximum %lu for index \"%s\"",
(unsigned long) newsize,
(unsigned long) Min(INDEX_SIZE_MASK,
GinMaxItemSize),
RelationGetRelationName(index))));
return NULL;
}
GinSetNPosting(itup, 0);
}
return itup;

15
src/backend/access/gin/ginfast.c
View File

@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginfast.c,v 1.4 2009/09/15 20:31:30 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginfast.c,v 1.5 2009/10/02 21:14:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -20,7 +20,6 @@
#include "access/genam.h"
#include "access/gin.h"
#include "access/tuptoaster.h"
#include "catalog/index.h"
#include "commands/vacuum.h"
#include "miscadmin.h"
@ -465,16 +464,10 @@ ginHeapTupleFastCollect(Relation index, GinState *ginstate,
*/
for (i = 0; i < nentries; i++)
{
int32 tupsize;
collector->tuples[collector->ntuples + i] = GinFormTuple(ginstate, attnum, entries[i], NULL, 0);
collector->tuples[collector->ntuples + i] =
GinFormTuple(index, ginstate, attnum, entries[i], NULL, 0, true);
collector->tuples[collector->ntuples + i]->t_tid = *item;
tupsize = IndexTupleSize(collector->tuples[collector->ntuples + i]);
if (tupsize > TOAST_INDEX_TARGET || tupsize >= GinMaxItemSize)
elog(ERROR, "huge tuple");
collector->sumsize += tupsize;
collector->sumsize += IndexTupleSize(collector->tuples[collector->ntuples + i]);
}
collector->ntuples += nentries;

16
src/backend/access/gin/gininsert.c
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/gininsert.c,v 1.23 2009/07/29 20:56:17 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/gininsert.c,v 1.24 2009/10/02 21:14:04 tgl Exp $
*-------------------------------------------------------------------------
*/
@ -102,8 +102,9 @@ addItemPointersToTuple(Relation index, GinState *ginstate, GinBtreeStack *stack,
{
Datum key = gin_index_getattr(ginstate, old);
OffsetNumber attnum = gintuple_get_attrnum(ginstate, old);
IndexTuple res = GinFormTuple(ginstate, attnum, key,
NULL, nitem + GinGetNPosting(old));
IndexTuple res = GinFormTuple(index, ginstate, attnum, key,
NULL, nitem + GinGetNPosting(old),
false);
if (res)
{
@ -122,7 +123,7 @@ addItemPointersToTuple(Relation index, GinState *ginstate, GinBtreeStack *stack,
GinPostingTreeScan *gdi;
/* posting list becomes big, so we need to make posting's tree */
res = GinFormTuple(ginstate, attnum, key, NULL, 0);
res = GinFormTuple(index, ginstate, attnum, key, NULL, 0, true);
postingRoot = createPostingTree(index, GinGetPosting(old), GinGetNPosting(old));
GinSetPostingTree(res, postingRoot);
@ -185,13 +186,12 @@ ginEntryInsert(Relation index, GinState *ginstate,
}
else
{
/* We suppose, that tuple can store at list one itempointer */
itup = GinFormTuple(ginstate, attnum, value, items, 1);
if (itup == NULL || IndexTupleSize(itup) >= GinMaxItemSize)
elog(ERROR, "huge tuple");
/* We suppose that tuple can store at least one itempointer */
itup = GinFormTuple(index, ginstate, attnum, value, items, 1, true);
if (nitem > 1)
{
/* Add the rest, making a posting tree if necessary */
IndexTuple previtup = itup;
itup = addItemPointersToTuple(index, ginstate, stack, previtup, items + 1, nitem - 1, isBuild);

5
src/backend/access/gin/ginvacuum.c
View File

@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginvacuum.c,v 1.30 2009/06/11 14:48:53 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginvacuum.c,v 1.31 2009/10/02 21:14:04 tgl Exp $
*-------------------------------------------------------------------------
*/
@ -564,7 +564,8 @@ ginVacuumEntryPage(GinVacuumState *gvs, Buffer buffer, BlockNumber *roots, uint3
value = gin_index_getattr(&gvs->ginstate, itup);
attnum = gintuple_get_attrnum(&gvs->ginstate, itup);
itup = GinFormTuple(&gvs->ginstate, attnum, value, GinGetPosting(itup), newN);
itup = GinFormTuple(gvs->index, &gvs->ginstate, attnum, value,
GinGetPosting(itup), newN, true);
PageIndexTupleDelete(tmppage, i);
if (PageAddItem(tmppage, (Item) itup, IndexTupleSize(itup), i, false, false) != i)

7
src/backend/access/nbtree/nbtinsert.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.173 2009/08/01 20:59:17 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtinsert.c,v 1.174 2009/10/02 21:14:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -518,9 +518,10 @@ _bt_findinsertloc(Relation rel,
if (itemsz > BTMaxItemSize(page))
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds btree maximum, %lu",
errmsg("index row size %lu exceeds maximum %lu for index \"%s\"",
(unsigned long) itemsz,
(unsigned long) BTMaxItemSize(page)),
(unsigned long) BTMaxItemSize(page),
RelationGetRelationName(rel)),
errhint("Values larger than 1/3 of a buffer page cannot be indexed.\n"
"Consider a function index of an MD5 hash of the value, "
"or use full text indexing.")));

7
src/backend/access/nbtree/nbtsort.c
View File

@ -59,7 +59,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.119 2009/01/01 17:23:36 momjian Exp $
* $PostgreSQL: pgsql/src/backend/access/nbtree/nbtsort.c,v 1.120 2009/10/02 21:14:04 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -480,9 +480,10 @@ _bt_buildadd(BTWriteState *wstate, BTPageState *state, IndexTuple itup)
if (itupsz > BTMaxItemSize(npage))
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("index row size %lu exceeds btree maximum, %lu",
errmsg("index row size %lu exceeds maximum %lu for index \"%s\"",
(unsigned long) itupsz,
(unsigned long) BTMaxItemSize(npage)),
(unsigned long) BTMaxItemSize(npage),
RelationGetRelationName(wstate->index)),
errhint("Values larger than 1/3 of a buffer page cannot be indexed.\n"
"Consider a function index of an MD5 hash of the value, "
"or use full text indexing.")));

11
src/include/access/gin.h
View File

@ -4,7 +4,7 @@
*
* Copyright (c) 2006-2009, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/access/gin.h,v 1.34 2009/06/11 14:49:08 momjian Exp $
* $PostgreSQL: pgsql/src/include/access/gin.h,v 1.35 2009/10/02 21:14:04 tgl Exp $
*--------------------------------------------------------------------------
*/
#ifndef GIN_H
@ -165,8 +165,8 @@ typedef struct
#define GinGetPosting(itup) ( (ItemPointer)(( ((char*)(itup)) + SHORTALIGN(GinGetOrigSizePosting(itup)) )) )
#define GinMaxItemSize \
((BLCKSZ - SizeOfPageHeaderData - \
MAXALIGN(sizeof(GinPageOpaqueData))) / 3 - sizeof(ItemIdData))
MAXALIGN_DOWN(((BLCKSZ - SizeOfPageHeaderData - \
MAXALIGN(sizeof(GinPageOpaqueData))) / 3 - sizeof(ItemIdData)))
/*
@ -434,8 +434,9 @@ extern void ginInsertValue(GinBtree btree, GinBtreeStack *stack);
extern void findParents(GinBtree btree, GinBtreeStack *stack, BlockNumber rootBlkno);
/* ginentrypage.c */
extern IndexTuple GinFormTuple(GinState *ginstate, OffsetNumber attnum, Datum key,
ItemPointerData *ipd, uint32 nipd);
extern IndexTuple GinFormTuple(Relation index, GinState *ginstate,
OffsetNumber attnum, Datum key,
ItemPointerData *ipd, uint32 nipd, bool errorTooBig);
extern void GinShortenTuple(IndexTuple itup, uint32 nipd);
extern void prepareEntryScan(GinBtree btree, Relation index, OffsetNumber attnum,
Datum value, GinState *ginstate);