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https://issues.apache.org/jira/browse/BOOKKEEPER-235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Kelly updated BOOKKEEPER-235:
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Attachment: BOOKKEEPER-235.diff
The problem was that the flush thread was syncing on entryLogger, while
EntryLogger#addEntry is also synchronised, so they were holding each other off.
Fix is two liner.
> Bad syncing in entrylogger degrades performance for many concurrent ledgers
> ---------------------------------------------------------------------------
>
> Key: BOOKKEEPER-235
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-235
> Project: Bookkeeper
> Issue Type: Bug
> Reporter: Ivan Kelly
> Assignee: Ivan Kelly
> Priority: Blocker
> Fix For: 4.1.0
>
> Attachments: BOOKKEEPER-235.diff
>
>
> EntryLogger flush syncs on the wrong object, which really hurts performance.
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