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Re: Are lock/unlock tables replicated in ROW / STATEMENT / MIXED r. mode


Also, you must understand that replication is asynchronous or
semi-synchronous. What means - your update will come to slave in
"unspecified" amount of time - maybe 1 millisecond, maybe 1 day.
For example, your client may have access to master and slave but the link
between master and slave may be broken.

2016-01-13 16:39 GMT+02:00 Reindl Harald <h.reindl@xxxxxxxxxxxxx>:

> Am 13.01.2016 um 15:35 schrieb pslawek83:
>> Hi Guys, quick question about lock tables with replication...
>> I basically use it to achieve atomicity of some database writes, but it
>> seems that queries like
>> are not replicated to slave.
>> Eg. i can lock table on master, for write, but still read from it on the
>> slave, which could lead to issues...
>> We're reading some data from slaves, and writing data to it atomically
>> using LOCK TABLES, it seems that this way will lead to race conditions and
>> inconsistent reads from the slave. Any way of having aria/myisam writes to
>> be atomic on the slaves too? I thought to copy the table to random
>> temporary name, do the changes and then rename... but it seems like not
>> very optimal.
> that's why InnoDB and transactions exists
> use the right tool for the job
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