[ https://issues.apache.org/jira/browse/HDFS-14783?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Haibin Huang updated HDFS-14783: -------------------------------- Attachment: HDFS-14783-004.patch > Expired SampleStat needs to be removed from SlowPeersReport > ----------------------------------------------------------- > > Key: HDFS-14783 > URL: https://issues.apache.org/jira/browse/HDFS-14783 > Project: Hadoop HDFS > Issue Type: Bug > Reporter: Haibin Huang > Assignee: Haibin Huang > Priority: Major > Attachments: HDFS-14783, HDFS-14783-001.patch, HDFS-14783-002.patch, > HDFS-14783-003.patch, HDFS-14783-004.patch > > > SlowPeersReport is calculated by the SampleStat between tow dn, so it can > present on nn's jmx like this: > {code:java} > "SlowPeersReport" :[{"SlowNode":"dn2","ReportingNodes":["dn1"]}] > {code} > the SampleStat is stored in a LinkedBlockingDeque<SumAndCount>, it won't be > removed until the queue is full and a newest one is generated. Therefore, if > dn1 don't send any packet to dn2 for a long time, the old SampleStat will > keep staying in the queue, and will be used to calculated slowpeer.I think > these old SampleStats should be considered as expired message and ignore them > when generating a new SlowPeersReport. -- 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