[ https://issues.apache.org/jira/browse/HDFS-4702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wei-Chiu Chuang resolved HDFS-4702. ----------------------------------- Resolution: Duplicate Target Version/s: (was: ) Looking at code, this lock is removed as part of HDFS-5693. > remove namesystem lock from DatanodeManager#fetchDatanodes > ---------------------------------------------------------- > > Key: HDFS-4702 > URL: https://issues.apache.org/jira/browse/HDFS-4702 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: namenode > Affects Versions: 3.0.0-alpha1 > Reporter: Chris Nauroth > Assignee: Chris Nauroth > Priority: Major > > {{DatanodeManager#fetchDatanodes}} currently holds the namesystem read lock > while iterating through data nodes. This method is called from the namenode > web UI. HDFS-3990 reported a performance problem in this code path. This is > a follow-up jira to investigate whether or not we can remove the lock. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-dev-h...@hadoop.apache.org