Daniil Kirilyuk created QPID-8557:
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Summary: [Broker-J] Batching mode for CoalescingCommitter
Key: QPID-8557
URL: https://issues.apache.org/jira/browse/QPID-8557
Project: Qpid
Issue Type: Improvement
Components: Broker-J
Affects Versions: qpid-java-broker-8.0.5
Reporter: Daniil Kirilyuk
Although QPID-8547 introduced configurable parameters for CoalescingCommitter,
BDB log is flushed to disc on every message. That is caused by calling
future.get() inside of org.apache.qpid.server.txn.AsyncCommand.complete(). Such
call forces broker to wait until CoalescingCommiter calls
#CommitThread#processJobs() making the operation effectively sync instead of
async (every message triggers processJobs() and data flush).
To improve overall performance we suggest to add batching mode for
CoalescingCommitter, which would consider BDBVirtualHost parameters and flush
data in chunks of size ${qpid.broker.bdbCommiterNotifyThreshold} or every
${qpid.broker.bdbCommiterWaitTimeout} ms (whatever comes first).
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