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| author | Andrei Elkin <andrei.elkin@mariadb.com> | 2018-03-18 21:01:41 +0200 |
|---|---|---|
| committer | Sergei Golubchik <serg@mariadb.org> | 2018-06-28 15:47:03 +0200 |
| commit | 8ca18294d59e4df82dacba69f9853e568ab2e0eb (patch) | |
| tree | cfa9ba69b953e82ce1247aab77d13952a3633b06 /mysql-test/t/max_statement_time.test | |
| parent | 16c14d7ba05ed3ad6ce1f3a8e0447d6304a7e636 (diff) | |
| download | mariadb-git-8ca18294d59e4df82dacba69f9853e568ab2e0eb.tar.gz | |
MDEV-14014 Multi-Slave Replication Fail: bogus data in log event
MDEV-7257 made a dump thread to read from binlog concurrently with
writers as long as the read bytes are below a water-mark
(MYSQL_BIN_LOG::binlog_end_pos). However it appeared to be possible a
dump thread reader reach out for bytes past the water mark through a
feature of IO_CACHE that fills in the internal buffer and while doing
so it could read what the reader is not supposed to see (the bytes
above MYSQL_BIN_LOG::binlog_end_pos).
The issue is fixed with constraining the IO_CACHE buffer fill to respect
the watermark.
An added unit test proves reading from file is bound to an external
parameter
passed to {IO_CACHE::end_of_file} cache member.
Diffstat (limited to 'mysql-test/t/max_statement_time.test')
0 files changed, 0 insertions, 0 deletions