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https://issues.apache.org/jira/browse/HDFS-11284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15790659#comment-15790659
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Yuanbo Liu commented on HDFS-11284:
-----------------------------------
[~umamaheswararao] Thanks for your quick response.
This is the exception I got for #3:
{code}
received exception
org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException: Cannot append
to a non-existent replica
BP-110838317-127.0.1.1-1483244649874:blk_1073741825_1001, reportedBlock move is
failed
at
org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil.checkBlockOpStatus(DataTransferProtoUtil.java:134)
at
org.apache.hadoop.hdfs.server.datanode.StoragePolicySatisfyWorker$BlockMovingTask.receiveResponse(StoragePolicySatisfyWorker.java:282)
at
org.apache.hadoop.hdfs.server.datanode.StoragePolicySatisfyWorker$BlockMovingTask.moveBlock(StoragePolicySatisfyWorker.java:238)
at
org.apache.hadoop.hdfs.server.datanode.StoragePolicySatisfyWorker$BlockMovingTask.call(StoragePolicySatisfyWorker.java:200)
at
org.apache.hadoop.hdfs.server.datanode.StoragePolicySatisfyWorker$BlockMovingTask.call(StoragePolicySatisfyWorker.java:177)
{code}
> [SPS]: Avoid running SPS under safemode and fix issues in target node
> choosing.
> -------------------------------------------------------------------------------
>
> Key: HDFS-11284
> URL: https://issues.apache.org/jira/browse/HDFS-11284
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
>
> Recently I've found in some conditions, SPS is not stable:
> * SPS runs under safe mode.
> * There're some overlap nodes in the chosen target nodes.
> * The real replication number of block doesn't match the replication factor.
> For example, the real replication is 2 while the replication factor is 3.
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