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Posted to hdfs-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/12/19 08:50:00 UTC
[jira] [Commented] (HDFS-16871) DiskBalancer process may throws IllegalArgumentException when the target DataNode has capital letter in hostname
[ https://issues.apache.org/jira/browse/HDFS-16871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17649213#comment-17649213 ]
ASF GitHub Bot commented on HDFS-16871:
---------------------------------------
Daniel-009497 opened a new pull request, #5240:
URL: https://github.com/apache/hadoop/pull/5240
For a Datanode with lowercase letter in hostname, everyting is ok,
but for a Datanode with uppercase hostname, when Balancer process try ro migrate on it, there will be a IllegalArgumentException thrown.
For more details, Pls refer to jira HDFS-16871
> DiskBalancer process may throws IllegalArgumentException when the target DataNode has capital letter in hostname
> ----------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-16871
> URL: https://issues.apache.org/jira/browse/HDFS-16871
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Daniel Ma
> Assignee: Daniel Ma
> Priority: Major
> Attachments: screenshot-1.png, screenshot-2.png
>
>
> DiskBalancer process read DataNode hostname as lowercase letters,
> !screenshot-1.png!
> but there is no letter case transform when getNodeByName.
> !screenshot-2.png!
> For a DataNode with lowercase hostname. everything is ok.
> But for a DataNode with uppercase hostname, when Balancer process try to migrate on it, there will be a IllegalArgumentException thrown as below,
> {code:java}
> 2022-10-09 16:15:26,631 ERROR tools.DiskBalancerCLI: java.lang.IllegalArgumentException: Unable to find the specified node. node-group-1YlRf0002
> {code}
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