Vivek Ghatala created HDFS-12679: ------------------------------------ Summary: Namenode stale memory Datanode gets Wipes out Key: HDFS-12679 URL: https://issues.apache.org/jira/browse/HDFS-12679 Project: Hadoop HDFS Issue Type: Bug Components: namenode Affects Versions: 2.8.1 Reporter: Vivek Ghatala
Namenode stale mapping information about datanodes commands wiping out datanode. LOG LINES: 2017-10-11 23:01:45,969 DEBUG org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager: remove datanode XXX.XX.XX.1:YYYYY 2017-10-11 23:01:45,969 DEBUG org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager: DatanodeManager.wipeDatanode(XXX.XX.XX.1:YYYYY): storage ##STORAGE_ID1## is removed from datanodeMap. Scenario: Our environment uses shared storage. Whenever some datanode restarts, some other node comes up with that storage with different Ip address. It is possible that multiple datanodes restarts at same time. Case: the node 1 serving some storage X is now serving storage Y. node 2 comes up and is serving storage X now. Namenode here commands storage Y to get wiped out. -- 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