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https://issues.apache.org/jira/browse/HDFS-6326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13988218#comment-13988218
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Daryn Sharp commented on HDFS-6326:
-----------------------------------
{{hasAcl}} has RPC specific checks to determine if ACLs are not supported. The
jersey initialization of the query param fails to create the enum. There is no
good way to detect that ACLS aren't enabled w/o a hack to catch illegal
arguments and mince the message string. :(
The ACLs should have been returned in the file status, or at least a flag to
indicate ACLs are present.
> 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
> Priority: Blocker
>
> 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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