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https://issues.apache.org/jira/browse/HDFS-13749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16605002#comment-16605002
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Chao Sun commented on HDFS-13749:
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Attached patch v1. [~xkrogen]: turns out it's not easy to reuse
{{NameNodeProxies}} since it is in a different module. Here I still called
{{HAServiceProtocolClientSideTranslatorPB}} but it is semantically the same as
what {{NameNodeProxies}} does.
> Use getServiceStatus to discover observer namenodes
> ---------------------------------------------------
>
> Key: HDFS-13749
> URL: https://issues.apache.org/jira/browse/HDFS-13749
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chao Sun
> Assignee: Chao Sun
> Priority: Major
> Attachments: HDFS-13749-HDFS-12943.000.patch,
> HDFS-13749-HDFS-12943.001.patch
>
>
> In HDFS-12976 currently we discover NameNode state by calling
> {{reportBadBlocks}} as a temporary solution. Here, we'll properly implement
> this by using {{HAServiceProtocol#getServiceStatus}}.
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