Shaohua Wang a54b581d03 BUG#22385442 - INNODB: DIFFICULT TO FIND FREE BLOCKS IN THE BUFFER POOL ...

Problem:
We keep pinning pages in dict_stats_analyze_index_below_cur(),
but doesn't release these pages. When we have a relative small
buffer pool size, and big innodb_stats_persistent_sample_pages,
there will be no free pages for use.

Solution:
Use a separate mtr in dict_stats_analyze_index_below_cur(),
and commit mtr before return.

Reviewed-by: Jimmy Yang <jimmy.yang@oracle.com>
RB: 11362

2018-05-16 15:03:09 +05:30

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