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https://issues.apache.org/jira/browse/HDFS-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Todd Lipcon updated HDFS-2791:
------------------------------
Resolution: Fixed
Fix Version/s: 0.23.1
0.24.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Committed to branch-23 and trunk.
The branch-23 patch required a few small changes since protobuf RPC isn't
merged:
- instead of using a spy on the bpNamenode object, it uses a mock with
DelegateAnswer as the default answer implementation
- changed types from the translator implementation to the straight
DatanodeProtocol
Since the changes were simple and confined to test code, I made sure the new
test passed and committed.
> If block report races with closing of file, replica is incorrectly marked
> corrupt
> ---------------------------------------------------------------------------------
>
> Key: HDFS-2791
> URL: https://issues.apache.org/jira/browse/HDFS-2791
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node, name-node
> Affects Versions: 0.22.0, 0.23.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Fix For: 0.24.0, 0.23.1
>
> Attachments: hdfs-2791-test.txt, hdfs-2791.txt, hdfs-2791.txt,
> hdfs-2791.txt, hdfs-2791.txt
>
>
> The following sequence of events results in a replica mistakenly marked
> corrupt:
> 1. Pipeline is open with 2 replicas
> 2. DN1 generates a block report but is slow in sending to the NN (eg some
> flaky network). It gets "stuck" right before the block report RPC.
> 3. Client closes the file.
> 4. DN2 is fast and sends blockReceived to the NN. NN marks the block as
> COMPLETE
> 5. DN1's block report proceeds, and includes the block in an RBW state.
> 6. (x) NN incorrectly marks the replica as corrupt, since it is an RBW
> replica on a COMPLETE block.
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