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https://issues.apache.org/jira/browse/HDFS-10441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Clampffer updated HDFS-10441:
-----------------------------------
Attachment: HDFS-10441.HDFS-8707.000.patch
Attached basic implementation patch. Seems to work but needs lots of stuff
cleaned up and improved. Can't assign bugs but I'll claim this one.
-Moved DNS lookup to RPCEngine, but FileSystem will still do a round of it
first. Needs to be cleaned up
-Only 1 nameservice supported in config files. If more than one exists the
leftmost one in the file gets picked.
-RetryWithFailover policy has hardcoded #s of failovers and retries. Just some
more work to parse that.
-Needs lots of testing, been using iptables to block NNs on an HA cluster
rather than actually switching active/standby.
> libhdfs++: HA namenode support
> ------------------------------
>
> Key: HDFS-10441
> URL: https://issues.apache.org/jira/browse/HDFS-10441
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: James Clampffer
> Attachments: HDFS-10441.HDFS-8707.000.patch
>
>
> If a cluster is HA enabled then do proper failover.
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