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https://issues.apache.org/jira/browse/FLUME-1327?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hari Shreedharan updated FLUME-1327:
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Status: Patch Available (was: Open)
> File Channel can deadlock in when checkpoint happens in between a
> put/take/commit
> ---------------------------------------------------------------------------------
>
> Key: FLUME-1327
> URL: https://issues.apache.org/jira/browse/FLUME-1327
> Project: Flume
> Issue Type: Bug
> Components: Channel
> Affects Versions: v1.2.0
> Reporter: Hari Shreedharan
> Fix For: v1.2.0
>
> Attachments: FLUME-1327-1.patch
>
>
> In the following case, the FileChannel deadlocks:
> * put() grabs the read lock.
> * In another thread, the writeCheckpoint method is called, which is
> synchronized, but this method gets blocked on writelock.lock() call.
> * put() method calls roll, which is also synchronized, ends up getting
> blocked on the monitor for the Log object.
> * The lock is never acquired since the thread holding the lock is blocked on
> the monitor.
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