dingshun3016 opened a new pull request, #5170:
URL: https://github.com/apache/hadoop/pull/5170
When patching the datanode's fine-grained lock, we found that the datanode
couldn't start，maybe happened deadlock，when addBlockPool, so we can remove it.
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl#addBlockPool
get writeLock
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl#deepCopyReplica
need readLock
because it is not the same thread, so the write lock cannot be downgraded to
a read lock
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
