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https://issues.apache.org/jira/browse/HDFS-8441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14553511#comment-14553511
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Walter Su commented on HDFS-8441:
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>... Maybe we could add a method in {{FSDirectory#isInECZone(src)}} and use it
>to tell the condition?
Good idea. I found {{dir#isInECZone(iip)}} exists. So I add
{{ns#isInEcZone(src)}}. I think usually {{ns}} takes {{src}} arg, and {{dir}}
takes {{iip}}.
>... Please add message to the fail() statement like...
Done.
Thank you both. Uploaded 003 patch.
> Erasure Coding: make condition check earlier for setReplication
> ---------------------------------------------------------------
>
> Key: HDFS-8441
> URL: https://issues.apache.org/jira/browse/HDFS-8441
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Walter Su
> Assignee: Walter Su
> Attachments: HDFS-8441-HDFS-7285.001.patch,
> HDFS-8441-HDFS-7285.002.patch, HDFS-8441-HDFS-7285.003.patch
>
>
> Changes:
> 1. {{UnsupportedActionException}} is more user-firendly.
> 2. check condition before update storage count
> 3. support create EC file with replication=0
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