marko 36c9bbc734 branches/innodb+: buf_get_volume_buffered(): When estimating the number of ... records on a page, count each unique buffered record at most once. ibuf_get_volume_buffered_hash(): New function, for inserting a hashed record into a bit array. ibuf_get_volume_buffered_count(): New function, refactored from ibuf_get_volume_buffered(), for counting the unique records buffered for the page. ibuf_get_volume_buffered(): Define hash_bitmap, a bit array for identifying duplicate records. Hash collisions do not hurt correctness, only performance. If the number of records on the page is estimated as 0, deletes will not be buffered. This patch is just for the record, as is rb://44. In the tests run so far, the function ibuf_get_volume_buffered() always seems to estimate the number of records as 0, disabling all buffered deletes.		2008-11-05 10:25:07 +00:00
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ibuf0ibuf.c	branches/innodb+: buf_get_volume_buffered(): When estimating the number of	2008-11-05 10:25:07 +00:00