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ASF GitHub Bot logged work on HDFS-15754: ----------------------------------------- Author: ASF GitHub Bot Created on: 29/Dec/20 22:59 Start Date: 29/Dec/20 22:59 Worklog Time Spent: 10m Work Description: fengnanli opened a new pull request #2578: URL: https://github.com/apache/hadoop/pull/2578 ## NOTICE Please create an issue in ASF JIRA before opening a pull request, and you need to set the title of the pull request which starts with the corresponding JIRA issue number. (e.g. HADOOP-XXXXX. Fix a typo in YYY.) For more details, please see https://cwiki.apache.org/confluence/display/HADOOP/How+To+Contribute ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 529303) Remaining Estimate: 0h Time Spent: 10m > Create packet metrics for DataNode > ---------------------------------- > > Key: HDFS-15754 > URL: https://issues.apache.org/jira/browse/HDFS-15754 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Reporter: Fengnan Li > Assignee: Fengnan Li > Priority: Minor > Time Spent: 10m > Remaining Estimate: 0h > > In BlockReceiver, right now when there is slowness in writeToMirror, > writeToDisk and writeToOsCache, it is dumped in the debug log. In practice we > have found these are quite useful signal to detect issues in DataNode, so it > will be great these metrics can be exposed by JMX. > Also we introduced totalPacket received to use a percentage as a signal to > detect the potentially underperforming datanode since datanodes across one > HDFS cluster may received different numbers of packets totally. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org