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https://issues.apache.org/jira/browse/HDFS-10544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang updated HDFS-10544:
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Affects Version/s: 2.6.1
> Balancer doesn't work with IPFailoverProxyProvider
> --------------------------------------------------
>
> Key: HDFS-10544
> URL: https://issues.apache.org/jira/browse/HDFS-10544
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: balancer & mover, ha
> Affects Versions: 2.6.1
> Reporter: Zhe Zhang
> Assignee: Zhe Zhang
> Fix For: 2.8.0, 2.7.3, 2.9.0, 2.6.5, 3.0.0-alpha1
>
> Attachments: HDFS-10544-branch-2.7.patch, 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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