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From "James Clampffer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10441) libhdfs++: HA namenode support
Date Tue, 12 Jul 2016 18:29:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10441?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Clampffer updated HDFS-10441:
-----------------------------------
    Attachment: HDFS-10441.HDFS-8707.011.patch

New patch ready to go (lots of manual testing, will file jira for adding CI tests)
-Get rid of RpcEngine::ha_enabled_, switch "ha_persisted_info_ && ha_persisted_info->is_enabled()"
into just a check on ha_persisted_info.  The only call left to is_enabled is to check if it
is in a valid state, after that a non-null pointer is sufficient to determine if it's HA.
-got rid of declatations for HANamenodeTracker::IsActiveNamenode /IsStandbyNamenode
-fix the warning when we get more than two namenodes as part of a nameservice.  It would warn
when we had two nodes.. ">" vs ">="
-turn the default max rpc retries to zero.  This was hitting a signed to unsigned conversion
issue when using -1.  This prevented the last patch from properly failing over on timed out
connections.  


> 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
>            Assignee: James Clampffer
>         Attachments: HDFS-10441.HDFS-8707.000.patch, HDFS-10441.HDFS-8707.002.patch,
HDFS-10441.HDFS-8707.003.patch, HDFS-10441.HDFS-8707.004.patch, HDFS-10441.HDFS-8707.005.patch,
HDFS-10441.HDFS-8707.006.patch, HDFS-10441.HDFS-8707.007.patch, HDFS-10441.HDFS-8707.008.patch,
HDFS-10441.HDFS-8707.009.patch, HDFS-10441.HDFS-8707.010.patch, HDFS-10441.HDFS-8707.011.patch,
HDFS-8707.HDFS-10441.001.patch
>
>
> If a cluster is HA enabled then do proper failover.



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