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https://issues.apache.org/jira/browse/HDFS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119607#comment-13119607
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Aaron T. Myers commented on HDFS-1973:
--------------------------------------
Thanks a lot for the review, Todd. Doing what you describe will require Common
changes. I've filed HADOOP-7717 to address these. Once that's committed, I'll
update the patch here to remove the synchronization from
{{ConfiguredFailoverProxyProvider}}.
> HA: HDFS clients must handle namenode failover and switch over to the new
> active namenode.
> ------------------------------------------------------------------------------------------
>
> Key: HDFS-1973
> URL: https://issues.apache.org/jira/browse/HDFS-1973
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Suresh Srinivas
> Assignee: Aaron T. Myers
> Attachments: HDFS-1973-HDFS-1623.patch, HDFS-1973-HDFS-1623.patch,
> HDFS-1973-HDFS-1623.patch, hdfs-1973.0.patch
>
>
> During failover, a client must detect the current active namenode failure and
> switch over to the new active namenode. The switch over might make use of IP
> failover or some thing more elaborate such as zookeeper to discover the new
> active.
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