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From "Casey Brotherton (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9100) HDFS Balancer does not respect dfs.client.use.datanode.hostname
Date Wed, 23 Sep 2015 13:19:04 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9100?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Casey Brotherton updated HDFS-9100:
-----------------------------------
    Status: Patch Available  (was: Open)

> HDFS Balancer does not respect dfs.client.use.datanode.hostname
> ---------------------------------------------------------------
>
>                 Key: HDFS-9100
>                 URL: https://issues.apache.org/jira/browse/HDFS-9100
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover, HDFS
>            Reporter: Yongjun Zhang
>            Assignee: Casey Brotherton
>         Attachments: HDFS-9100.000.patch
>
>
> In Balancer Dispatch.java:
> {code}
>    private void dispatch() {
>       LOG.info("Start moving " + this);
>       Socket sock = new Socket();
>       DataOutputStream out = null;
>       DataInputStream in = null;
>       try {
>         sock.connect(
>             NetUtils.createSocketAddr(target.getDatanodeInfo().getXferAddr()),
>             HdfsConstants.READ_TIMEOUT);
> {code}
> getXferAddr() is called without taking into consideration of dfs.client.use.datanode.hostname
setting, this would possibly fail balancer run issued from outside a cluster.
> Thanks [~caseyjbrotherton] for reporting the issue.



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