[ https://issues.apache.org/jira/browse/HDFS-12647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nandakumar reassigned HDFS-12647: --------------------------------- Assignee: Nandakumar > DN commands processing should be async > -------------------------------------- > > Key: HDFS-12647 > URL: https://issues.apache.org/jira/browse/HDFS-12647 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: datanode > Affects Versions: 2.8.0 > Reporter: Daryn Sharp > Assignee: Nandakumar > > Due to dataset lock contention, service actors may encounter significant > latency while processing DN commands. Even the queuing of async deletions > require multiple lock acquisitions. A slow disk will cause a backlog of > xceivers instantiating block sender/receivers which starves the actor and > leads to the NN falsely declaring the node dead. > Async processing of all commands will free the actor to perform its primary > purpose of heartbeating and block reporting. Note that FBRs will be > dependent on queued block invalidations not being included in the report. -- 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