Jamie goodyear created AMQ-7118:
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Summary: KahaDB leak causing store limit to be exceeded with
durable subscribers.
Key: AMQ-7118
URL: https://issues.apache.org/jira/browse/AMQ-7118
Project: ActiveMQ
Issue Type: Bug
Components: KahaDB
Affects Versions: 5.15.8, 5.16.0
Environment: JDK 8
Reporter: Jamie goodyear
Fix For: 5.15.8
KahaDB leak causing store limit to be exceeded with durable subscribers.
AMQ with store limit set, we can observe that the usage continues to increase
AFTER PFC is engaged.
See below output from KahaDB dump:
!kahaCommands.png|width=674,height=558!
This appears to be caused by checkpointAckMessageFileMap. The log files are not
GC'd, and the KAHA_ACK_MESSAGE is replicated and the DB log files continue to
expand - this can become exponential. Side effect of also not checking storage
size in checkpoint update can cause the DB log files to exceed any set limits.
The real critical part is the duplicated and leaking Kaha messages which
appears to happen with durable subscribers.
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