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https://issues.apache.org/jira/browse/HDFS-6326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997921#comment-13997921
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Kihwal Lee commented on HDFS-6326:
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I looked over the patch one more time.
+1 pending precommit. You may fix the findbugs warning in a separate
non-blocker jira.
> WebHdfs ACL compatibility is broken
> -----------------------------------
>
> Key: HDFS-6326
> URL: https://issues.apache.org/jira/browse/HDFS-6326
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 3.0.0, 2.4.0
> Reporter: Daryn Sharp
> Assignee: Chris Nauroth
> Priority: Blocker
> Attachments: HDFS-6326.1.patch, HDFS-6326.2.patch, HDFS-6326.3.patch,
> HDFS-6326.4.patch, HDFS-6326.5.patch, HDFS-6326.6.patch, aclfsperm.example
>
>
> 2.4 ACL support is completely incompatible with <2.4 webhdfs servers. The NN
> throws an {{IllegalArgumentException}} exception.
> {code}
> hadoop fs -ls webhdfs://nn/
> Found 21 items
> ls: Invalid value for webhdfs parameter "op": No enum constant
> org.apache.hadoop.hdfs.web.resources.GetOpParam.Op.GETACLSTATUS
> [... 20 more times...]
> {code}
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