Hari Shreedharan created FLUME-1327:
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Summary: 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
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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