Siddharth Wagle created HDDS-1787:
-------------------------------------
Summary: NPE thrown while trying to find DN closest to client
Key: HDDS-1787
URL: https://issues.apache.org/jira/browse/HDDS-1787
Project: Hadoop Distributed Data Store
Issue Type: Bug
Components: Ozone Datanode
Affects Versions: 0.5.0
Reporter: Siddharth Wagle
cc: [~xyao] This seems related to the client side topology changes, not sure if
some other Jira is already addressing this.
{code}
2019-07-10 16:45:53,176 WARN ipc.Server (Server.java:logException(2724)) - IPC
Server handler 14 on 35066, call Call#127037 Retry#0
org.apache.hadoop.hdds.scm.protocol.ScmBlockLocationProtocol.send from 17
2.31.116.73:52540
java.lang.NullPointerException
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.lambda$sortDatanodes$0(ScmBlockLocationProtocolServerSideTranslatorPB.java:215)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.sortDatanodes(ScmBlockLocationProtocolServerSideTranslatorPB.java:215)
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.send(ScmBlockLocationProtocolServerSideTranslatorPB.java:124)
at
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:13157)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)
2019-07-10 16:45:53,176 WARN om.KeyManagerImpl
(KeyManagerImpl.java:lambda$sortDatanodeInPipeline$7(2129)) - Unable to sort
datanodes based on distance to client, volume=xqoyzocpse, bucket=vxwajaczqh,
key=pool-444-thread-7-201077822, client=127.0.0.1,
datanodes=[10f15723-45d7-4a0c-8f01-8b101744a110{ip: 172.31.116.73, host:
sid-minichaos.gce.cloudera.com, networkLocation: /default-rack, certSerialId:
null}, 7ac2777f-0a5c-4414-9e7f-bfbc47d696ea{ip: 172.31.116.73, host:
sid-minichaos.gce.cloudera.com, networkLocation: /default-rack, certSerialId:
null}], exception=java.lang.NullPointerException
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.lambda$sortDatanodes$0(ScmBlockLocationProtocolServerSideTranslatorPB.java:215)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.sortDatanodes(ScmBlockLocationProtocolServerSideTranslatorPB.java:215)
at
org.apache.hadoop.ozone.protocolPB.ScmBlockLocationProtocolServerSideTranslatorPB.send(ScmBlockLocationProtocolServerSideTranslatorPB.java:124)
at
org.apache.hadoop.hdds.protocol.proto.ScmBlockLocationProtocolProtos$ScmBlockLocationProtocolService$2.callBlockingMethod(ScmBlockLocationProtocolProtos.java:13157)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:876)
at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:822)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2682)
{code}
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