4049 Chaithra Gopalareddy 2012-07-19 [merge]
Null merge from 5.5 to 5.6
4048 Satya Bodapati 2012-07-18
BUG#14212892 - WHY DOES BUF_PAGE_GET_GEN CONFIRM THE PAGE
CHECKSUM FOR COMPRESSED PAGES
For compressed pages, page checksum verification is done
when reading the page from disk and also while decompressing
the compressed pages.
Since page checksum verification is already done when
the page is read from disk, it is not necessary to verify the
checksums again when decompressing the page. By removing the extra
page checksum verification, the CPU used will be saved.
No mtr testcase as this change is covered by existing testcases.
Approved by Inaam: rb://1166
call buf_zip_decompress() with FALSE in buf_page_get_gen() to
disable page checksum verification when reading the page from
No bundle (reason: useless for push emails).
|• bzr push into mysql-5.6 branch (chaithra.gopalareddy:4048 to 4049) ||Chaithra Gopalareddy||19 Jul|