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https://issues.apache.org/jira/browse/HDFS-15801?focusedWorklogId=545675&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-545675
]
ASF GitHub Bot logged work on HDFS-15801:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Feb/21 22:45
Start Date: 01/Feb/21 22:45
Worklog Time Spent: 10m
Work Description: symious commented on pull request #2659:
URL: https://github.com/apache/hadoop/pull/2659#issuecomment-771212244
@jojochuang Thanks for the review.
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Issue Time Tracking
-------------------
Worklog Id: (was: 545675)
Time Spent: 40m (was: 0.5h)
> Backport HDFS-14582 to branch-2.10 (Failed to start DN with
> ArithmeticException when NULL checksum used)
> --------------------------------------------------------------------------------------------------------
>
> Key: HDFS-15801
> URL: https://issues.apache.org/jira/browse/HDFS-15801
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Janus Chow
> Assignee: Janus Chow
> Priority: Major
> Labels: pull-request-available
> Time Spent: 40m
> Remaining Estimate: 0h
>
> In HDFS-14582, the error message is more clear as follows:
> {code:java}
> Caused by: java.lang.ArithmeticException: / by zero
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.validateIntegrityAndSetLength(BlockPoolSlice.java:823)
> at
> {code}
> But in branch-2.10.1, the exception message is omitted as follows:
> {code:java}
> 2021-01-29 14:20:30,694 INFO impl.FsDatasetImpl (FsVolumeList.java:run(204))
> - Caught exception while adding replicas from /mnt/disk/0/hdfs/data/current.
> Will throw later.
> java.io.IOException: Failed to start sub tasks to add replica in replica map
> :java.lang.ArithmeticExceptionjava.io.IOException: Failed to start sub tasks
> to add replica in replica map :java.lang.ArithmeticException at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice.getVolumeMap(BlockPoolSlice.java:434)
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeImpl.getVolumeMap(FsVolumeImpl.java:930)
> at
> org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsVolumeList$1.run(FsVolumeList.java:196)
> {code}
> The specific error message is omitted, causing it harder to find the root
> cause.
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