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Brahma Reddy Battula commented on HDFS-13128: --------------------------------------------- As message says clearly that another balancer is running,I can see both are triggered from same machine(from provided logs),you can check "jps or ps"(apart from [~kihwal] mentioned above). Jira is to track the issues,please post queries in mailing list. > HDFS balancer in single node cluster fails with "Another Balancer is > running.." > ------------------------------------------------------------------------------- > > Key: HDFS-13128 > URL: https://issues.apache.org/jira/browse/HDFS-13128 > Project: Hadoop HDFS > Issue Type: Bug > Components: balancer & mover, hdfs > Affects Versions: 2.7.3 > Reporter: Zbigniew Kostrzewa > Priority: Minor > > In a single node "cluster", HDFS balancer fails with: > {noformat} > Time Stamp Iteration# Bytes Already Moved Bytes Left To Move Bytes Being Moved > java.io.IOException: Another Balancer is running.. Exiting ... > {noformat} > and in Name Node logs there is: > {noformat} > 2018-02-09 07:23:21,671 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* > allocate blk_1073741865_1041{UCState=UNDER_CONSTRUCTION, truncateBlock=null, > primaryNodeIndex=-1, > replicas=[ReplicaUC[[DISK]DS-dae233d3-5c71-498e-9a8b-669bff3fccdf:NORMAL:10.9.4.184:30010|RBW]]} > for /system/balancer.id > 2018-02-09 07:23:21,739 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* > fsync: /system/balancer.id for DFSClient_NONMAPREDUCE_-1126407107_1 > 2018-02-09 07:23:21,758 WARN org.apache.hadoop.hdfs.StateChange: DIR* > NameSystem.append: Failed to APPEND_FILE /system/balancer.id for > DFSClient_NONMAPREDUCE_1275100437_1 on 10.9.4.184 because this file lease is > currently owned by DFSClient_NONMAPREDUCE_-1126407107_1 on 10.9.4.184 > 2018-02-09 07:23:21,758 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 1 on 8020, call org.apache.hadoop.hdfs.protocol.ClientProtocol.append from > 10.9.4.184:49781 Call#12 Retry#0: > org.apache.hadoop.hdfs.protocol.AlreadyBeingCreatedException: Failed to > APPEND_FILE /system/balancer.id for DFSClient_NONMAPREDUCE_1275100437_1 on > 10.9.4.184 because this file lease is currently owned by > DFSClient_NONMAPREDUCE_-1126407107_1 on 10.9.4.184 > 2018-02-09 07:23:21,773 INFO BlockStateChange: BLOCK* addStoredBlock: > blockMap updated: 10.9.4.184:30010 is added to > blk_1073741865_1041{UCState=UNDER_CONSTRUCTION, truncateBlock=null, > primaryNodeIndex=-1, > replicas=[ReplicaUC[[DISK]DS-dae233d3-5c71-498e-9a8b669bff3fccdf:NORMAL:10.9.4.184:30010|RBW]]} > size 15 > 2018-02-09 07:23:21,776 INFO org.apache.hadoop.hdfs.StateChange: DIR* > completeFile: /system/balancer.id is closed by > DFSClient_NONMAPREDUCE_-1126407107_1{noformat} -- 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