[HDFS-10552] DiskBalancer "-query" results in NPE if no plan for the node

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: HDFS-1312
• Component/s: datanode
• Hadoop Flags: Reviewed
• Assignee: Anu Engineer
• Reporter: Lei (Eddy) Xu
• Created: 20/Jun/16 21:48
• Updated: 24/Jun/16 06:19
• Resolved: 23/Jun/16 00:40

Description

16/06/20 11:50:16 INFO command.Command: Executing "query plan" command.
java.lang.NullPointerException
	at org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos$QueryPlanStatusResponseProto$Builder.setPlanID(ClientDatanodeProtocolProtos.java:12782)
	at org.apache.hadoop.hdfs.protocolPB.ClientDatanodeProtocolServerSideTranslatorPB.queryDiskBalancerPlan(ClientDatanodeProtocolServerSideTranslatorPB.java:340)
	at org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos$ClientDatanodeProtocolService$2.callBlockingMethod(ClientDatanodeProtocolProtos.java:17513)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080)