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https://issues.apache.org/jira/browse/HDFS-14600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17281281#comment-17281281
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Leon Gao commented on HDFS-14600:
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Synced with [~fengnanli] offline, namenode discovery cannot work on datanodes
without some code changes. Opened a separate ticket to support this: HDFS-15785
> DataNodes using DNS NameNode discovery will not send block reports when
> failover
> --------------------------------------------------------------------------------
>
> Key: HDFS-14600
> URL: https://issues.apache.org/jira/browse/HDFS-14600
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Kei Kori
> Assignee: Fengnan Li
> Priority: Major
>
> While DataNodes are using DNS to resolve its NameNodes, DataNodes seem not
> recognize NameNode failover and not send block reports.
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