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https://issues.apache.org/jira/browse/HDFS-5659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13847131#comment-13847131
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Fengdong Yu commented on HDFS-5659:
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I think this was fixed with HDFS-5626
> dfsadmin -report doesn't output cache information properly
> ----------------------------------------------------------
>
> Key: HDFS-5659
> URL: https://issues.apache.org/jira/browse/HDFS-5659
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: caching
> Affects Versions: 3.0.0
> Reporter: Akira AJISAKA
>
> I tried to cache a file by "hdfs cacheadmin -addDirective".
> I thought the file was cached because "CacheUsed" at jmx was more than 0.
> {code}
> {
> "name" :
> "Hadoop:service=DataNode,name=FSDatasetState-DS-1043926324-172.28.0.102-50010-1385087929296",
> "modelerType" :
> "org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl",
> "Remaining" : 5604772597760,
> "StorageInfo" : "FSDataset{dirpath='[/hadoop/data1/dfs/data/current,
> /hadoop/data2/dfs/data/current, /hadoop/data3/dfs/data/current]'}",
> "Capacity" : 5905374474240,
> "DfsUsed" : 11628544,
> "CacheCapacity" : 1073741824,
> "CacheUsed" : 360448,
> "NumFailedVolumes" : 0,
> "NumBlocksCached" : 1,
> "NumBlocksFailedToCache" : 0,
> "NumBlocksFailedToUncache" : 0
> },
> {code}
> But "dfsadmin -report" didn't output the same value as jmx.
> {code}
> Configured Cache Capacity: 0 (0 B)
> Cache Used: 0 (0 B)
> Cache Remaining: 0 (0 B)
> Cache Used%: 100.00%
> Cache Remaining%: 0.00%
> {code}
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