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https://issues.apache.org/jira/browse/HDFS-15795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen O'Donnell resolved HDFS-15795.
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Resolution: Fixed
> EC: Wrong checksum when reconstruction was failed by exception
> --------------------------------------------------------------
>
> Key: HDFS-15795
> URL: https://issues.apache.org/jira/browse/HDFS-15795
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode, ec, erasure-coding
> Reporter: Yushi Hayasaka
> Assignee: Yushi Hayasaka
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.1, 3.4.0, 3.1.5, 3.2.3
>
> Time Spent: 1h 40m
> Remaining Estimate: 0h
>
> If the reconstruction task is failed on StripedBlockChecksumReconstructor by
> exception, the checksum becomes wrong one because it is calculated with
> blocks except a failure one.
> It is caused by catching exception with not appropriate way. As a result, the
> failed block is not fetched again.
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