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https://issues.apache.org/jira/browse/HDFS-16863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17655400#comment-17655400
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JiangHua Zhu commented on HDFS-16863:
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[~yuyanlei], if FBR is reduced, will it have any new impact:
1. Some duplicates exist on Datanodes. NameNode should be notified but is not
notified in time.
2. Complete the copy data saved by NameNode.
> Optimize frequency of regular block reports
> -------------------------------------------
>
> Key: HDFS-16863
> URL: https://issues.apache.org/jira/browse/HDFS-16863
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode
> Reporter: Yanlei Yu
> Priority: Major
> Attachments: HDFS-16863.patch
>
>
> like HDFS-15162
> Avoid sending block report at regular interval, if there is no failover,
> DiskError or any exception encountered in connecting to the Namenode.
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