[jira] [Created] (HDFS-5659) dfsadmin -report doesn't output cache information properly

["Akira AJISAKA (JIRA)" <ji...@apache.org>]

Akira AJISAKA created HDFS-5659:
-----------------------------------

             Summary: 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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