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https://issues.apache.org/jira/browse/HDFS-12502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhe Zhang updated HDFS-12502:
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Description: Large listing ops can oftentimes be the main contributor to
NameNode slowness. The aggregate cost of listing ops is proportional to the
> nntop should support a category based on FilesInGetListingOps
> -------------------------------------------------------------
>
> Key: HDFS-12502
> URL: https://issues.apache.org/jira/browse/HDFS-12502
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: metrics
> Reporter: Zhe Zhang
>
> Large listing ops can oftentimes be the main contributor to NameNode
> slowness. The aggregate cost of listing ops is proportional to the
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