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https://issues.apache.org/jira/browse/HDFS-12976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16514055#comment-16514055
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Erik Krogen edited comment on HDFS-12976 at 6/15/18 4:31 PM:
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Hey [~csun], I don't see why the changes to
{{ConfiguredFailoverProxyProvider#performFailover()}} are necessary. The intent
as I understand it is that you increment the proxy index, then try it, and if
the proxy is in the wrong state it will throw an exception and
{{performFailover()}} will be called again. This process should work fine
without the {{isObserverState}} check.
was (Author: xkrogen):
Hey [~csun], I don't see why the changes to
{{ConfiguredFailoverProxyProvider#performFailover()}} are necessary. The intent
is that you increment the proxy index, then try it, and if the proxy is in the
wrong state it will throw an exception and {{performFailover()}} will be called
again. This process should work fine without the {{isObserverState}} check.
> Introduce ObserverReadProxyProvider
> -----------------------------------
>
> Key: HDFS-12976
> URL: https://issues.apache.org/jira/browse/HDFS-12976
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: Konstantin Shvachko
> Assignee: Chao Sun
> Priority: Major
> Attachments: HDFS-12976-HDFS-12943.000.patch,
> HDFS-12976-HDFS-12943.001.patch, HDFS-12976-HDFS-12943.002.patch,
> HDFS-12976-HDFS-12943.003.patch, HDFS-12976.WIP.patch
>
>
> {{StandbyReadProxyProvider}} should implement {{FailoverProxyProvider}}
> interface and be able to submit read requests to ANN and SBN(s).
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