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https://issues.apache.org/jira/browse/HDFS-10552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15342179#comment-15342179
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Lei (Eddy) Xu commented on HDFS-10552:
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[~anu] Can we add a test to enforce the behavior ?
Thanks.
> DiskBalancer "-query" results in NPE if no plan for the node
> ------------------------------------------------------------
>
> Key: HDFS-10552
> URL: https://issues.apache.org/jira/browse/HDFS-10552
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: HDFS-1312
> Reporter: Lei (Eddy) Xu
> Assignee: Anu Engineer
> Priority: Critical
> Attachments: HDFS-10552-HDFS-1312.001.patch,
> HDFS-10552-HDFS-1312.002.patch
>
>
> {code}
> 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)
> {code}
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