[ https://issues.apache.org/jira/browse/HDFS-14554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
He Xiaoqiao updated HDFS-14554: ------------------------------- Resolution: Implemented Status: Resolved (was: Patch Available) This feature has implemented in branch trunk and close this issue. > Avoid to process duplicate blockreport of datanode when namenode in startup > safemode > ------------------------------------------------------------------------------------ > > Key: HDFS-14554 > URL: https://issues.apache.org/jira/browse/HDFS-14554 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: namenode > Reporter: He Xiaoqiao > Assignee: He Xiaoqiao > Priority: Major > Attachments: HDFS-14554.001.patch > > > When NameNode restart and enter stage of startup safemode, load of NameNode > could be very high since blockreport request storm from datanodes together. > Sometimes datanode may request blockreport times because NameNode doesn't > return in time and DataNode meet timeoutexception then retry, Thus it > sharpens load of NameNode. > So we should check and filter duplicate blockreport request from one > datannode and reduce load of Namenode. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org