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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-3478) -setQuota, -setSpaceQuota Issues with Long.Max_Value
Date Tue, 05 Jun 2012 19:39:24 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3478?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins reassigned HDFS-3478:
---------------------------------

    Assignee: Sujay Rau
    
> -setQuota, -setSpaceQuota Issues with Long.Max_Value
> ----------------------------------------------------
>
>                 Key: HDFS-3478
>                 URL: https://issues.apache.org/jira/browse/HDFS-3478
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 2.0.0-alpha
>            Reporter: Sujay Rau
>            Assignee: Sujay Rau
>            Priority: Minor
>              Labels: newbie
>
> [root@c1204 hadoop]# sudo -u hdfs hadoop fs -mkdir testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hadoop fs -count -q testQuotaFolder
> none inf none inf 1 0 0 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setQuota 1000 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setSpaceQuota 1000 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hadoop fs -count -q testQuotaFolder
> 1000 999 1000 1000 1 0 0 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setSpaceQuota 9223372036854775807 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setQuota 9223372036854775807 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hadoop fs -count -q testQuotaFolder
> 1000 999 1000 1000 1 0 0 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setQuota 9223372036854775806 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setSpaceQuota 9223372036854775806 testQuotaFolder
> [root@c1204 hadoop]# sudo -u hdfs hadoop fs -count -q testQuotaFolder
> 9223372036854775806 9223372036854775805 9223372036854775806 9223372036854775806 1 0 0
testQuotaFolder
> The documentation at http://hadoop.apache.org/common/docs/r0.20.0/hdfs_quota_admin_guide.html
says that the max quota size is Long.Max_Value which is = 9223372036854775807, but as you
can see above, setting the quota to this value returns no error but doesn't actually change
the quota value. Long.Max_Value - 1 works though.. so the documentation should be changed
to reflect this behavior. Long.Max_Value + 1 returns an actual error (though it isn't the
same as the negative number error):
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setSpaceQuota 9223372036854775808 testQuotaFolder
> setSpaceQuota: For input string: "9223372036854775808"
> Usage: java DFSAdmin [-setSpaceQuota <quota> <dirname>...<dirname>]
> [root@c1204 hadoop]# sudo -u hdfs hdfs dfsadmin -setSpaceQuota -1 testQuotaFolder
> setSpaceQuota: Illegal option -1

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