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https://issues.apache.org/jira/browse/HDFS-5122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jing Zhao updated HDFS-5122:
----------------------------
Resolution: Fixed
Fix Version/s: 2.3.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Thanks for the work, [~wheat9]! I've committed this to trunk and branch-2.
> Support failover and retry in WebHdfsFileSystem for NN HA
> ---------------------------------------------------------
>
> Key: HDFS-5122
> URL: https://issues.apache.org/jira/browse/HDFS-5122
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, webhdfs
> Affects Versions: 2.1.0-beta
> Reporter: Arpit Gupta
> Assignee: Haohui Mai
> Fix For: 2.3.0
>
> Attachments: HDFS-5122.001.patch, HDFS-5122.002.patch,
> HDFS-5122.003.patch, HDFS-5122.004.patch, HDFS-5122.patch
>
>
> Bug reported by [~arpitgupta]:
> If the dfs.nameservices is set to arpit,
> {code}
> hdfs dfs -ls webhdfs://arpit/tmp
> {code}
> does not work. You have to provide the exact active namenode hostname. On an
> HA cluster using dfs client one should not need to provide the active nn
> hostname.
> To fix this, we try to
> 1) let WebHdfsFileSystem support logical NN service name
> 2) add failover_and_retry functionality in WebHdfsFileSystem for NN HA
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