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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Updated] (HDFS-13410) RBF: Support federation with no subclusters
Date Sun, 08 Apr 2018 01:26:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13410?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Íñigo Goiri updated HDFS-13410:
-------------------------------
    Status: Patch Available  (was: Open)

> RBF: Support federation with no subclusters
> -------------------------------------------
>
>                 Key: HDFS-13410
>                 URL: https://issues.apache.org/jira/browse/HDFS-13410
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Íñigo Goiri
>            Assignee: Íñigo Goiri
>            Priority: Minor
>         Attachments: HDFS-13410.000.patch
>
>
> If the federation has no subclusters the logs have long stack traces. Even though this
is not a regular setup for RBF, we should trigger log message.
> An example:
> {code}
> Caused by: java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
> 	at java.util.LinkedList.checkElementIndex(LinkedList.java:555)
> 	at java.util.LinkedList.get(LinkedList.java:476)
> 	at org.apache.hadoop.hdfs.server.federation.router.RouterRpcClient.invokeConcurrent(RouterRpcClient.java:1028)
> 	at org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.getDatanodeReport(RouterRpcServer.java:1264)
> 	at org.apache.hadoop.hdfs.server.federation.metrics.FederationMetrics.getNodeUsage(FederationMetrics.java:424)
> {code}



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