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https://issues.apache.org/jira/browse/HADOOP-14758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16150605#comment-16150605
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Steve Loughran commented on HADOOP-14758:
-----------------------------------------
trivial; can do this in HADOOP-14420
> S3GuardTool.prune to handle UnsupportedOperationException
> ---------------------------------------------------------
>
> Key: HADOOP-14758
> URL: https://issues.apache.org/jira/browse/HADOOP-14758
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Steve Loughran
>
> {{MetadataStore.prune()}} may throw {{UnsupportedOperationException}} if not
> supported.
> {{S3GuardTool.prune}} should recognise this, catch it and treat it
> differently from any other failure, e.g. inform and return 0 as its a no-op
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