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https://issues.apache.org/jira/browse/HDDS-451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16615622#comment-16615622
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Lokesh Jain commented on HDDS-451:
----------------------------------
[~szetszwo] The retry policy set in ozone would make the client retry for 50 *
200ms = 10 secs. This is less than retry cache timeout of 60 secs. Therefore
this case should not arrive that a client retries and retry cache entry becomes
invalid which in turn causes the request to be resubmitted at the server.
I had another case in mind. When a new leader is elected it places a
placeholder entry into the log. There might be a race condition where the
placeholder index returned might not be the last entry. This can happen if
there is an appendEntry executing in parallel. The appendEntry might have
passed the validation stage where the role and leaderId is checked. After that
it can apply entries to the raft log and the appended entries might get
appended after the placeholder index. Its a rare scenario but is this something
which could cause the above error?
> PutKey failed due to error "Rejecting write chunk request. Chunk overwrite
> without explicit request"
> ----------------------------------------------------------------------------------------------------
>
> Key: HDDS-451
> URL: https://issues.apache.org/jira/browse/HDDS-451
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Client
> Affects Versions: 0.2.1
> Reporter: Nilotpal Nandi
> Assignee: Shashikant Banerjee
> Priority: Blocker
> Attachments: all-node-ozone-logs-1536841590.tar.gz
>
>
> steps taken :
> ------------------
> # Ran Put Key command to write 50GB data. Put Key client operation failed
> after 17 mins.
> error seen ozone.log :
> ------------------------------------
>
> {code}
> 2018-09-13 12:11:53,734 [ForkJoinPool.commonPool-worker-20] DEBUG
> (ChunkManagerImpl.java:85) - writing
> chunk:bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_1
> chunk stage:COMMIT_DATA chunk
> file:/tmp/hadoop-root/dfs/data/hdds/de0a9e01-4a12-40e3-b567-51b9bd83248e/current/containerDir0/16/chunks/bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_1
> tmp chunk file
> 2018-09-13 12:11:56,576 [pool-3-thread-60] DEBUG (ChunkManagerImpl.java:85) -
> writing
> chunk:bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2
> chunk stage:WRITE_DATA chunk
> file:/tmp/hadoop-root/dfs/data/hdds/de0a9e01-4a12-40e3-b567-51b9bd83248e/current/containerDir0/16/chunks/bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2
> tmp chunk file
> 2018-09-13 12:11:56,739 [ForkJoinPool.commonPool-worker-20] DEBUG
> (ChunkManagerImpl.java:85) - writing
> chunk:bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2
> chunk stage:COMMIT_DATA chunk
> file:/tmp/hadoop-root/dfs/data/hdds/de0a9e01-4a12-40e3-b567-51b9bd83248e/current/containerDir0/16/chunks/bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2
> tmp chunk file
> 2018-09-13 12:12:21,410 [Datanode State Machine Thread - 0] DEBUG
> (DatanodeStateMachine.java:148) - Executing cycle Number : 206
> 2018-09-13 12:12:51,411 [Datanode State Machine Thread - 0] DEBUG
> (DatanodeStateMachine.java:148) - Executing cycle Number : 207
> 2018-09-13 12:12:53,525 [BlockDeletingService#1] DEBUG
> (TopNOrderedContainerDeletionChoosingPolicy.java:79) - Stop looking for next
> container, there is no pending deletion block contained in remaining
> containers.
> 2018-09-13 12:12:55,048 [Datanode ReportManager Thread - 1] DEBUG
> (ContainerSet.java:191) - Starting container report iteration.
> 2018-09-13 12:13:02,626 [pool-3-thread-1] ERROR (ChunkUtils.java:244) -
> Rejecting write chunk request. Chunk overwrite without explicit request.
> ChunkInfo{chunkName='bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2,
> offset=0, len=16777216}
> 2018-09-13 12:13:03,035 [pool-3-thread-1] INFO (ContainerUtils.java:149) -
> Operation: WriteChunk : Trace ID: 54834b29-603d-4ba9-9d68-0885215759d8 :
> Message: Rejecting write chunk request. OverWrite flag
> required.ChunkInfo{chunkName='bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2,
> offset=0, len=16777216} : Result: OVERWRITE_FLAG_REQUIRED
> 2018-09-13 12:13:03,037 [ForkJoinPool.commonPool-worker-11] ERROR
> (ChunkUtils.java:244) - Rejecting write chunk request. Chunk overwrite
> without explicit request.
> ChunkInfo{chunkName='bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2,
> offset=0, len=16777216}
> 2018-09-13 12:13:03,037 [ForkJoinPool.commonPool-worker-11] INFO
> (ContainerUtils.java:149) - Operation: WriteChunk : Trace ID:
> 54834b29-603d-4ba9-9d68-0885215759d8 : Message: Rejecting write chunk
> request. OverWrite flag
> required.ChunkInfo{chunkName='bd80b58a5eba888200a4832a0f2aafb3_stream_5f3b2505-6964-45c9-a7ad-827388a1e6a0_chunk_2,
> offset=0, len=16777216} : Result: OVERWRITE_FLAG_REQUIRED
>
> {code}
>
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