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  1. Hadoop HDFS
  2. HDFS-5626

dfsadmin -report shows incorrect cache values

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.0.0-alpha1
    • Fix Version/s: 2.4.0
    • Component/s: caching
    • Labels:
      None
    • Target Version/s:

      Description

      I have a single node hadoop-trunk cluster that has caching enabled and datanode max locked memory set to 536870912B.

      When I run dfsadmin -report, I see the following:

      [root@hdfs-c5-nfs hadoop_tar_confs]# hdfs dfsadmin -report
      Configured Capacity: 50779643904 (47.29 GB)
      Present Capacity: 43480281088 (40.49 GB)
      DFS Remaining: 43480227840 (40.49 GB)
      DFS Used: 53248 (52 KB)
      DFS Used%: 0.00%
      Under replicated blocks: 0
      Blocks with corrupt replicas: 0
      Missing blocks: 0
      
      -------------------------------------------------
      Datanodes available: 1 (1 total, 0 dead)
      
      Live datanodes:
      Name: 10.20.217.45:50010 (hdfs-c5-nfs.ent.cloudera.com)
      Hostname: hdfs-c5-nfs.ent.cloudera.com
      Decommission Status : Normal
      Configured Capacity: 50779643904 (47.29 GB)
      DFS Used: 53248 (52 KB)
      Non DFS Used: 7299362816 (6.80 GB)
      DFS Remaining: 43480227840 (40.49 GB)
      DFS Used%: 0.00%
      DFS Remaining%: 85.63%
      Configured Cache Capacity: 50779643904 (0 B)
      Cache Used: 0 (52 KB)
      Cache Remaining: 0 (40.49 GB)
      Cache Used%: 100.00%
      Cache Remaining%: 0.00%
      Last contact: Tue Dec 03 14:59:31 PST 2013
      

      The values seem to be wrong. In configured cache capacity, we have listed 50779643904 but in parantheses that is translated to (0B). The non-cache related values with parantheses have correct translations.

      It says that I've used 100% of the cache, but the system does not have any pools or directives.

      Also, we see that we have 0 Cache remaining, but that is translated to (40.49GB).

        Attachments

        1. HDFS-5626.001.patch
          3 kB
          Colin McCabe
        2. HDFS-5626.002.patch
          3 kB
          Colin McCabe

          Activity

            People

            • Assignee:
              cmccabe Colin McCabe
              Reporter:
              schu Stephen Chu
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              Dates

              • Created:
                Updated:
                Resolved: