[HDFS-6590] NullPointerException was generated in getBlockLocalPathInfo when datanode restarts

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 2.2.0
• Component/s: datanode
• Assignee: Unassigned
• Reporter: Guo Ruijing
• Created: 23/Jun/14 03:14
• Updated: 04/Nov/14 07:37
• Resolved: 04/Nov/14 07:37

Description

2014-06-11 20:34:40.240119, p43949, th140725562181728, ERROR cannot setup block reader for Block: [block pool ID: BP-1901161041-172.28.1.251-1402542341112 block ID 1073741926_1102] on Datanode: sdw3(172.28.1.3).
RpcHelper.h: 74: HdfsIOException: Unexpected exception: when unwrap the rpc remote exception ""java.lang.NullPointerException"", java.lang.NullPointerException
at org.apache.hadoop.hdfs.server.datanode.DataNode.getBlockLocalPathInfo(DataNode.java:1014)
at org.apache.hadoop.hdfs.protocolPB.ClientDatanodeProtocolServerSideTranslatorPB.getBlockLocalPathInfo(ClientDatanodeProtocolServerSideTranslatorPB.java:112)
at org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos$ClientDatanodeProtocolService$2.callBlockingMethod(ClientDatanodeProtocolProtos.java:6373)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:585)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:928)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2044)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2042)

Issue Links

• is duplicated by: HDFS-2882 DN continues to start up, even if block pool fails to initialize