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Fix some typos in comment

This commit is contained in:
Peter Eisentraut 2016-09-26 12:00:00 -04:00
parent 9779bda86c
commit 440c8d1bbc
1 changed files with 3 additions and 3 deletions
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6
src/include/access/hash.h
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@ -119,7 +119,7 @@ typedef HashScanOpaqueData *HashScanOpaque;
#define HASH_VERSION 2 /* 2 signifies only hash key value is stored */
/*
* Spares[] holds the number of overflow pages currently allocated at or
* spares[] holds the number of overflow pages currently allocated at or
* before a certain splitpoint. For example, if spares[3] = 7 then there are
* 7 ovflpages before splitpoint 3 (compare BUCKET_TO_BLKNO macro). The
* value in spares[ovflpoint] increases as overflow pages are added at the
@ -129,14 +129,14 @@ typedef HashScanOpaqueData *HashScanOpaque;
*
* ovflpages that have been recycled for reuse can be found by looking at
* bitmaps that are stored within ovflpages dedicated for the purpose.
* The blknos of these bitmap pages are kept in bitmaps[]; nmaps is the
* The blknos of these bitmap pages are kept in mapp[]; nmaps is the
* number of currently existing bitmaps.
*
* The limitation on the size of spares[] comes from the fact that there's
* no point in having more than 2^32 buckets with only uint32 hashcodes.
* There is no particular upper limit on the size of mapp[], other than
* needing to fit into the metapage. (With 8K block size, 128 bitmaps
* limit us to 64 Gb of overflow space...)
* limit us to 64 GB of overflow space...)
*/
#define HASH_MAX_SPLITPOINTS 32
#define HASH_MAX_BITMAPS 128