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https://issues.apache.org/jira/browse/HDFS-13985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16679797#comment-16679797
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Adam Antal commented on HDFS-13985:
-----------------------------------
Thanks for the comment [~zvenczel].
I looked at the use-cases where {{public ReplicaNotFoundException(String msg)}}
is used, and I agree that it may be a little bit too much in places where a
reasonable error message is provided to the exception. The jira aimed to have a
clearer message where we have less information which is happen to be the usages
of the {{public ReplicaNotFoundException(ExtendedBlock b)}} constructor, where
we have no further message added.
Incorporated to [^HDFS-13985.002.patch].
> Clearer error message for ReplicaNotFoundException
> --------------------------------------------------
>
> Key: HDFS-13985
> URL: https://issues.apache.org/jira/browse/HDFS-13985
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Adam Antal
> Assignee: Adam Antal
> Priority: Major
> Attachments: HDFS-13985.001.patch, HDFS-13985.002.patch
>
>
> The issue is that we came across a ReplicaNotFoundException in a bug report,
> the most informative thing we could get is "Replica not found for
> [ExtendedBlock]". If someone tries to investigate cases including
> ReplicaNotFoundExceptions should review diagnostic bundles, dig through logs,
> but as a starting point enhancing the exception message would boost this
> process, and be beneficial in the long run.
> More concretely, it would be helpful if any of the following information was
> displayed along with the exception: file's name, replication factor or block
> location.
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