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https://issues.apache.org/jira/browse/HDFS-16776?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Takanobu Asanuma resolved HDFS-16776.
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Fix Version/s: 3.4.0
3.3.9
3.2.5
Resolution: Fixed
> Erasure Coding: The length of targets should be checked when DN gets a
> reconstruction task
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-16776
> URL: https://issues.apache.org/jira/browse/HDFS-16776
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Kidd5368
> Assignee: Kidd5368
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0, 3.3.9, 3.2.5
>
>
> The length of targets should be checked when DN gets a EC reconstruction
> task.For some reason (HDFS-14768, HDFS-16739) , the length of targets will be
> larger than additionalReplRequired which causes some elements in targets get
> the default value 0. It may trigger the bug which leads to the data
> corrupttion just like HDFS-14768.
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