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From "Zhe Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10544) Balancer doesn't work with IPFailoverProxyProvider
Date Wed, 13 Jul 2016 06:55:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhe Zhang updated HDFS-10544:
-----------------------------
    Fix Version/s: 3.0.0-alpha1
                   2.9.0
                   2.8.0

> Balancer doesn't work with IPFailoverProxyProvider
> --------------------------------------------------
>
>                 Key: HDFS-10544
>                 URL: https://issues.apache.org/jira/browse/HDFS-10544
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>             Fix For: 2.8.0, 2.9.0, 3.0.0-alpha1
>
>         Attachments: HDFS-10544.00.patch, HDFS-10544.01.patch, HDFS-10544.02.patch, HDFS-10544.03.patch,
HDFS-10544.04.patch, HDFS-10544.05.patch
>
>
> Right now {{Balancer}} gets the NN URIs through {{DFSUtil#getNameServiceUris}}, which
returns logical URIs in HA is enabled. If {{IPFailoverProxyProvider}} is used, {{Balancer}}
will not be able to start.
> I think the bug is at {{DFSUtil#getNameServiceUris}}:
> {code}
>     for (String nsId : getNameServiceIds(conf)) {
>       if (HAUtil.isHAEnabled(conf, nsId)) {
>         // Add the logical URI of the nameservice.
>         try {
>           ret.add(new URI(HdfsConstants.HDFS_URI_SCHEME + "://" + nsId));
> {code}
> Then {{if}} clause should also consider if the {{FailoverProxyProvider}} has {{useLogicalURI}}
enabled. If not, {{getNameServiceUris}} should try to resolve the physical URI for this nsId.



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