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Wei Yan commented on HDFS-12502: -------------------------------- LGTM. One minor format: {code} verify(rb, times(3)).addCounter(Interns.info("op=listStatus." + "user=test.count", "Total operations performed by user"), 3L); + + verify(rb, times(3)).addCounter(Interns.info("op=" + FILES_IN_GETLISTING + + ".user=test.count", "Total operations performed by user"), 1000L); } {code} some extra spaces there in the last line change. > 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 > Assignee: Zhe Zhang > Attachments: HDFS-12502.00.patch, HDFS-12502.01.patch, > HDFS-12502.02.patch, HDFS-12502.03.patch > > > Large listing ops can oftentimes be the main contributor to NameNode > slowness. The aggregate cost of listing ops is proportional to the > {{FilesInGetListingOps}} rather than the number of listing ops. Therefore > it'd be very useful for nntop to support this category. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org