5.2.5-99 on CentOS 5.5 x86_64: FederatedX memory leak during SELECTs
Bug #781320 reported by
Dave Brady
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
MariaDB |
New
|
Undecided
|
Unassigned |
Bug Description
We use the FederatedX engine exclusively for SELECTs.
Local (MyISAM) tables are populated with INSERT INTO ... SELECT FROM <Federated table>. Aggregation and other querying is done against the local tables.
Memory is almost always being leaked by the SELECTs. Successive queries usually cause unallocated RAM to be consumed, instead of reusing that which had been already allocated by mysqld. The box eventually starts to page, at which point the instance needs to be restarted.
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The FederatedX engine is exactly what we wanted for a system we are running.
This memory leak is really the only issue with it that is hurting us.
Hopefully an easy solution will be found!