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https://issues.apache.org/jira/browse/QPID-8557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17394084#comment-17394084
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ASF GitHub Bot commented on QPID-8557:
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dakirily opened a new pull request #105:
URL: https://github.com/apache/qpid-broker-j/pull/105
The purpose of this PR is addition of batching mode to the
CoalescingCommitter allowing BDB log flush in configurable chunks and
increasing performance (see
[QPID-8557](https://issues.apache.org/jira/browse/QPID-8557)).
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> [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
> Priority: Minor
>
> 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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