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https://issues.apache.org/jira/browse/HDFS-5326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13799606#comment-13799606
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Colin Patrick McCabe commented on HDFS-5326:
--------------------------------------------
I took a whack at this this morning. I ended up reorganizing the types a
little bit-- basically creating a type for PBCDs where all the fields were
optional (nullable), but continuing to combine that with factories that did
validation. It's not quite ready to post but hopefully I'll have it soon.
> add modifyDirective to cacheAdmin
> ---------------------------------
>
> Key: HDFS-5326
> URL: https://issues.apache.org/jira/browse/HDFS-5326
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Colin Patrick McCabe
>
> We should add a way of modifying cache directives on the command-line,
> similar to how modifyCachePool works.
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