Craig Muchinsky created GIRAPH-871:
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Summary: Map task jvm never exits since netty 4 upgrade
Key: GIRAPH-871
URL: https://issues.apache.org/jira/browse/GIRAPH-871
Project: Giraph
Issue Type: Bug
Components: bsp
Affects Versions: 1.1.0
Reporter: Craig Muchinsky
Fix For: 1.1.0
Some changes made to the NettyClient.stop() logic related to netty 4 are
causing the final worker thread to hang up indefinitely, preventing the map
task jvm from exiting. In particular, the call to
ProgressableUtils.awaitTerminationFuture() is blocking inside the
ChannelFutureListener callback and deadlocking. Simply moving the
ProgressableUtils.awaitTerminationFuture() calls outside of the
ChannelFutureListener callback and placing them at the end of the
NettyClient.stop() method seems to cure the problem.
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