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https://issues.apache.org/jira/browse/HDFS-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron T. Myers updated HDFS-1973:
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Attachment: HDFS-1973-HDFS-1623.patch
Thanks a lot for the review, Todd. Here's a patch which addresses your latest
comments.
bq. Yes, because unfortunately the Private annotation was added after the 0.20
release. If it's problematic to keep around, we don't have to, but it seemed
easy enough to maintain for now.
That's fair. I've put it back.
bq. This code confuses me – isn't currentProxy a proxy object, whereas
proxies.get(...) is an AddressRpcProxyPair? Which is to say they're always
un-equal?
Yep, good catch. Fixed.
> 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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