Nanda kumar created HDDS-661:
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Summary: When a volume fails in datanode VersionEndpointTask#call
ends up in dead lock.
Key: HDDS-661
URL: https://issues.apache.org/jira/browse/HDDS-661
Project: Hadoop Distributed Data Store
Issue Type: Bug
Components: Ozone Datanode
Reporter: Nanda kumar
When a volume fails the call to {{VersionEndpointTask#call}} ends up in dead
lock.
org.apache.hadoop.ozone.container.common.states.endpoint.VersionEndpointTask.call(VersionEndpointTask.java:78)
--> we acquire VolumeSet read lock here.
org.apache.hadoop.ozone.container.common.states.endpoint.VersionEndpointTask.call(VersionEndpointTask.java:93)
org.apache.hadoop.ozone.container.common.volume.VolumeSet.failVolume(VolumeSet.java:276)
org.apache.hadoop.ozone.container.common.volume.VolumeSet.writeLock(VolumeSet.java:210)
---> we wait for VolumeSet write lock.
Since this thread already holds the read lock, it cannot get the write lock and
ends up in dead lock.
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