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1. full functional WAL for GiST

Browse Source 
2. improve vacuum for gist
   - use FSM
   - full vacuum:
      - reforms parent tuple if it's needed
        ( tuples was deleted on child page or parent tuple remains invalid
          after crash recovery )
      - truncate index file if possible
3. fixes bugs and mistakes
This commit is contained in:
Teodor Sigaev
2005-06-20 10:29:37 +00:00
parent 0b62bbe086
commit d544ec8bbd
11 changed files with 1286 additions and 586 deletions
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16
src/backend/access/gist/gistget.c
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@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.48 2005/06/14 11:45:13 teodor Exp $
* $PostgreSQL: pgsql/src/backend/access/gist/gistget.c,v 1.49 2005/06/20 10:29:36 teodor Exp $
*
*-------------------------------------------------------------------------
*/
@ -112,7 +112,6 @@ gistnext(IndexScanDesc scan, ScanDirection dir)
{
Page p;
OffsetNumber n;
GISTPageOpaque po;
GISTScanOpaque so;
GISTSTACK *stk;
IndexTuple it;
@ -127,7 +126,6 @@ gistnext(IndexScanDesc scan, ScanDirection dir)
}
p = BufferGetPage(so->curbuf);
po = (GISTPageOpaque) PageGetSpecialPointer(p);
if (ItemPointerIsValid(&scan->currentItemData) == false)
{
@ -169,7 +167,6 @@ gistnext(IndexScanDesc scan, ScanDirection dir)
so->curbuf = ReleaseAndReadBuffer(so->curbuf, scan->indexRelation,
stk->block);
p = BufferGetPage(so->curbuf);
po = (GISTPageOpaque) PageGetSpecialPointer(p);
if (ScanDirectionIsBackward(dir))
n = OffsetNumberPrev(stk->offset);
@ -182,7 +179,7 @@ gistnext(IndexScanDesc scan, ScanDirection dir)
continue;
}
if (po->flags & F_LEAF)
if (GistPageIsLeaf(p))
{
/*
* We've found a matching index entry in a leaf page, so
@ -219,7 +216,6 @@ gistnext(IndexScanDesc scan, ScanDirection dir)
so->curbuf = ReleaseAndReadBuffer(so->curbuf, scan->indexRelation,
child_block);
p = BufferGetPage(so->curbuf);
po = (GISTPageOpaque) PageGetSpecialPointer(p);
if (ScanDirectionIsBackward(dir))
n = PageGetMaxOffsetNumber(p);
@ -256,6 +252,12 @@ gistindex_keytest(IndexTuple tuple,
IncrIndexProcessed();
/*
* Tuple doesn't restore after crash recovery because of inclomplete insert
*/
if ( !GistPageIsLeaf(p) && GistTupleIsInvalid(tuple) )
return true;
while (keySize > 0)
{
Datum datum;
@ -317,7 +319,6 @@ gistfindnext(IndexScanDesc scan, OffsetNumber n, ScanDirection dir)
{
OffsetNumber maxoff;
IndexTuple it;
GISTPageOpaque po;
GISTScanOpaque so;
MemoryContext oldcxt;
Page p;
@ -325,7 +326,6 @@ gistfindnext(IndexScanDesc scan, OffsetNumber n, ScanDirection dir)
so = (GISTScanOpaque) scan->opaque;
p = BufferGetPage(so->curbuf);
maxoff = PageGetMaxOffsetNumber(p);
po = (GISTPageOpaque) PageGetSpecialPointer(p);
/*
* Make sure we're in a short-lived memory context when we invoke