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During VACUUM FULL, truncate off any deletable pages that are at the

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end of a btree index.  This isn't super-effective, since we won't move
nondeletable pages, but it's better than nothing.  Also, improve stats
displayed during VACUUM VERBOSE.
This commit is contained in:
Tom Lane
2003-02-24 00:57:17 +00:00
parent 3981f2195f
commit 0797bb5c50
7 changed files with 79 additions and 30 deletions
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5
src/include/access/genam.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: genam.h,v 1.38 2003/02/22 00:45:05 tgl Exp $
* $Id: genam.h,v 1.39 2003/02/24 00:57:17 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -34,7 +34,8 @@ typedef struct IndexBulkDeleteResult
BlockNumber num_pages; /* pages remaining in index */
double num_index_tuples; /* tuples remaining */
double tuples_removed; /* # removed by bulk-delete operation */
BlockNumber pages_free; /* # unused pages in index */
BlockNumber pages_deleted; /* # unused pages in index */
BlockNumber pages_free; /* # pages available for reuse */
} IndexBulkDeleteResult;
/* Typedef for callback function to determine if a tuple is bulk-deletable */