MDEV-7257: Dump Thread Enhancements

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Make the binlog dump threads not need to take LOCK_log while sending
binlog events to slave. Instead, a new LOCK_binlog_end_pos is used
just to coordinate tracking the current end-of-log.

This is a pre-requisite for MDEV-162, "Enhanced semisync
replication". It should also help reduce the contention on LOCK_log on
a busy master.

Also does some much-needed refactoring/cleanup of the related code in
the binlog dump thread.

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This commit is contained in:

Jonas Oreland

2014-12-19 12:36:23 +01:00

committed by Kristian Nielsen

parent ea01fff505

commit 4d8b346e07

5 changed files with 1055 additions and 749 deletions

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sql/sql_repl.cc

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