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Bug#16067973 DROP TABLE SLOW WHEN IT DECOMPRESS COMPRESSED-ONLY PAGES

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buf_page_get_gen(): Do not attempt to decompress a compressed-only
page when mode == BUF_PEEK_IF_IN_POOL. This mode is only being used by
btr_search_drop_page_hash_when_freed(). There cannot be any adaptive
hash index pointing to a page that does not exist in uncompressed
format in the buffer pool.

innodb_buffer_pool_evict_update(): New function for debug builds, to handle
SET GLOBAL innodb_buffer_pool_evicted='uncompressed'
by evicting all uncompressed page frames of compressed tablespaces
from the buffer pool.

rb#1873 approved by Jimmy Yang
This commit is contained in:
Marko Mäkelä
2013-01-21 14:59:49 +02:00
parent d1f351bcb6
commit f130ccc1be
5 changed files with 94 additions and 3 deletions
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7
mysql-test/suite/sys_vars/r/innodb_buffer_pool_evict_basic.result Normal file
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SELECT @@global.innodb_buffer_pool_evict;
@@global.innodb_buffer_pool_evict
SET GLOBAL innodb_buffer_pool_evict = 'uncompressed';
SELECT @@global.innodb_buffer_pool_evict;
@@global.innodb_buffer_pool_evict

10
mysql-test/suite/sys_vars/t/innodb_buffer_pool_evict_basic.test Normal file
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-- source include/have_innodb_plugin.inc
# This is a debug variable for now
-- source include/have_debug.inc
SELECT @@global.innodb_buffer_pool_evict;
SET GLOBAL innodb_buffer_pool_evict = 'uncompressed';
# Should always be empty.
SELECT @@global.innodb_buffer_pool_evict;