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6 commits

Author SHA1 Message Date
Oleksandr Byelkin
bfc24bb2ec Merge branch '10.3' into 10.4 2020-01-24 14:50:23 +01:00
Oleksandr Byelkin
ceda5f724f Merge branch '10.2' into 10.3 2020-01-24 14:16:20 +01:00
Marko Mäkelä
ac3e3e12ad MDEV-21509: Work around occasional lost DEBUG_SYNC 2020-01-24 14:43:19 +02:00
Marko Mäkelä
87a61355e8 Merge 10.3 into 10.4 
The MDEV-17062 fix in commit c4195305b2
was omitted.
 2020-01-20 15:49:48 +02:00
Marko Mäkelä
6373ec3ec7 Merge 10.2 into 10.3 2020-01-18 16:56:16 +02:00
Marko Mäkelä
3e38d15585 MDEV-21509 Possible hang during purge of history, or rollback 
WL#6326 in MariaDB 10.2.2 introduced a potential hang on purge or rollback
when an index tree is being shrunk by multiple levels.

This fix is based on
mysql/mysql-server@f2c5852630
with the main difference that our version of the test case uses
DEBUG_SYNC instrumentation on ROLLBACK, not on purge.

btr_cur_will_modify_tree(): Simplify the check further.
This is the actual bug fix.

row_undo_mod_remove_clust_low(), row_undo_mod_clust(): Add DEBUG_SYNC
instrumentation for the test case.
 2020-01-17 14:27:28 +02:00