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ANALYSIS This is regression caused due to worklog 6742 which implemented ha_innobase::records() which always uses clustered index to get the row count. Previously optimizer chose secondary index which was smaller in size of clustered index to scan for rows and resulted in a quicker scan. FIX After discussion it was decided to remove this feature in 5.7. [#rb14040 Approved by Kevin and Oystein ] |
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| row0ext.cc | ||
| row0ftsort.cc | ||
| row0import.cc | ||
| row0ins.cc | ||
| row0log.cc | ||
| row0merge.cc | ||
| row0mysql.cc | ||
| row0purge.cc | ||
| row0quiesce.cc | ||
| row0row.cc | ||
| row0sel.cc | ||
| row0trunc.cc | ||
| row0uins.cc | ||
| row0umod.cc | ||
| row0undo.cc | ||
| row0upd.cc | ||
| row0vers.cc | ||