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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5626) dfsadmin -report shows incorrect cache values
Date Wed, 04 Dec 2013 19:40:37 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-5626:
---------------------------------------

    Attachment:     (was: HDFS-5626.002.patch)

> dfsadmin -report shows incorrect cache values
> ---------------------------------------------
>
>                 Key: HDFS-5626
>                 URL: https://issues.apache.org/jira/browse/HDFS-5626
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: caching
>    Affects Versions: 3.0.0
>            Reporter: Stephen Chu
>            Assignee: Colin Patrick McCabe
>         Attachments: HDFS-5626.001.patch, HDFS-5626.002.patch
>
>
>  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:
> {code}
> [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
> {code}
> 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).



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