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From "Siddharth Wagle (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDDS-1787) NPE thrown while trying to find DN closest to client
Date Fri, 12 Jul 2019 05:25:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1787?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Siddharth Wagle reassigned HDDS-1787:
-------------------------------------

    Assignee: Hrishikesh Gadre

> 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
>            Assignee: Hrishikesh Gadre
>            Priority: Major
>
> 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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