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https://issues.apache.org/jira/browse/HDFS-6763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14077055#comment-14077055
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Jing Zhao commented on HDFS-6763:
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Looks like the SBN does not need to call {{updateCountForQuota}} while tailing
editlog, since it should be consistent with the ANN. Thus
{{updateCountForQuota}} should only be called when NN starts?
> Standby NN stalls after processing edits
> ----------------------------------------
>
> Key: HDFS-6763
> URL: https://issues.apache.org/jira/browse/HDFS-6763
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, namenode
> Reporter: Daryn Sharp
>
> {{FSImage#loadEdits}} calls {{updateCountForQuota}} to recalculate & verify
> quotas for the entire namespace. A standby NN using shared edits calls this
> method every minute. The standby may appear to "hang" for many seconds.
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