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7e7592ade5
Backport the fix from the upstream and add our testcase.
Backported cset:
commit 997a979bf5e2f75ab88781d9d3fd22dddc1fc21f
Author: Manuel Ung <mung@fb.com>
Date: Thu Feb 15 08:38:12 2018 -0800
Fix crashes in autoincrement code paths
Summary:
There are two issues related to autoincrement that can lead to crashes:
1. The max value for double/float type for autoincrement was not implemented in MyRocks, and can lead to assertions. The fix is to add them in.
2. If we try to set auto_increment via alter table on a table without an auto_increment column defined, we segfault because there is no index from which to read the last value. The fix is to perform a check to see if autoincrement exists before reading from index (similar to code ha_rocksdb::open).
Fixes https://github.com/facebook/mysql-5.6/issues/792
Closes https://github.com/facebook/mysql-5.6/pull/794
Differential Revision: D6995096
Pulled By: lth
fbshipit-source-id: 1130ce1
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