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From nigro_franz <nigro....@gmail.com>
Subject Re: [ARTEMIS] ActiveMQScheduledLeaseLock warning is written periodically in broker log since 2.4.0
Date Tue, 16 Jan 2018 14:16:38 GMT
Hi!

when is used a JDBC Journal the JDBC Node Manager will use an optimistic
Lock with timeout (similar to the ActiveMQ's
http://activemq.apache.org/maven/apidocs/org/apache/activemq/store/jdbc/LeaseDatabaseLocker.html)
to maintain the ownership of the Journal.
This lock periodically renew the lease on the Journal and warn if the renew
operation will take more than what is expected (4000 ms I suppose) to be
triggered/happen.
The reasons could be very different including DBMS latencies/heavy GC
pauses/too many threads vs CPU cores.
More infos are here:
https://activemq.apache.org/artemis/docs/latest/persistence.html on
dbc-lock-renew-period field.

Cheers,
Franz




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