Bogdan Raducanu created HDFS-9516:
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Summary: truncate file fails with data dirs on multiple disks
Key: HDFS-9516
URL: https://issues.apache.org/jira/browse/HDFS-9516
Project: Hadoop HDFS
Issue Type: Bug
Components: datanode
Affects Versions: 2.7.1
Reporter: Bogdan Raducanu
FileSystem.truncate returns false (no exception) but the file is never closed
and not writable after this.
It seems to be because of copy on truncate which is used because the system is
in upgrade state. In this case a rename between devices is attempted.
See attached log and repro code.
Probably also affects truncate snapshotted file when copy on truncate is also
used.
Possibly it affects not only truncate but any block recovery.
I think the problem is in updateReplicaUnderRecovery
{code}
ReplicaBeingWritten newReplicaInfo = new ReplicaBeingWritten(
newBlockId, recoveryId, rur.getVolume(), blockFile.getParentFile(),
newlength);
{code}
blockFile is created with copyReplicaWithNewBlockIdAndGS which is allowed to
choose any volume so rur.getVolume() is not where the block is located.
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