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https://issues.apache.org/jira/browse/HDFS-5451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe updated HDFS-5451:
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Attachment: HDFS-5451.001.patch
* Add bytesNeeded, bytesCached, and filesAffected to CacheDirective,
CacheEntry, and plumb them through to listDirectives
* Numbers should be right-justified in listDirectives output.
* When TRACE is enabled, print out information about each file a cache
directive is caching during a rescan.
* In the Datanode log, print out what the DNA_CACHE/UNCACHE commands are doing,
not just their names. Use {{dfs.max.num.blocks.to.log}} to avoid logging too
many block IDs here.
* add unit test for new stats
> add more debugging for cache rescan
> -----------------------------------
>
> Key: HDFS-5451
> URL: https://issues.apache.org/jira/browse/HDFS-5451
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Affects Versions: 3.0.0
> Reporter: Colin Patrick McCabe
> Assignee: Andrew Wang
> Attachments: HDFS-5451.001.patch
>
>
> It would be nice to have message at DEBUG level that described all the
> decisions we made for cache entries. That way we could turn on this
> debugging to get more information. We should also store the number of bytes
> each PBCE wanted, and the number of bytes it got, plus the number of inodes
> it got, and output those in {{listDirectives}}.
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