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From "Lei (Eddy) Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-13175) Add more information for checking argument in DiskBalancerVolume
Date Tue, 20 Feb 2018 22:15:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Lei (Eddy) Xu updated HDFS-13175:
---------------------------------
    Status: Patch Available  (was: Open)

> Add more information for checking argument in DiskBalancerVolume
> ----------------------------------------------------------------
>
>                 Key: HDFS-13175
>                 URL: https://issues.apache.org/jira/browse/HDFS-13175
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: diskbalancer
>    Affects Versions: 3.0.0
>            Reporter: Lei (Eddy) Xu
>            Assignee: Lei (Eddy) Xu
>            Priority: Minor
>         Attachments: HDFS-13175.00.patch
>
>
> We have seen the following stack in production
> {code}
> Exception in thread "main" java.lang.IllegalArgumentException
> 	at com.google.common.base.Preconditions.checkArgument(Preconditions.java:72)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.datamodel.DiskBalancerVolume.setUsed(DiskBalancerVolume.java:268)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.connectors.DBNameNodeConnector.getVolumeInfoFromStorageReports(DBNameNodeConnector.java:141)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.connectors.DBNameNodeConnector.getNodes(DBNameNodeConnector.java:90)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.datamodel.DiskBalancerCluster.readClusterInfo(DiskBalancerCluster.java:132)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.command.Command.readClusterInfo(Command.java:123)
> 	at org.apache.hadoop.hdfs.server.diskbalancer.command.PlanCommand.execute(PlanCommand.java:107)
> {code}
> raised from 
> {code}
>  public void setUsed(long dfsUsedSpace) {
>     Preconditions.checkArgument(dfsUsedSpace < this.getCapacity());
>     this.used = dfsUsedSpace;
>   }
> {code}
> However, the datanode reports at the very moment were not captured. We should add more
information into the stack trace to better diagnose the issue.



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