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https://issues.apache.org/jira/browse/HDFS-5890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Vinay resolved HDFS-5890.
-------------------------
Resolution: Fixed
Fix Version/s: HDFS-5535 (Rolling upgrades)
Hadoop Flags: Reviewed
> Avoid NPE in Datanode heartbeat
> -------------------------------
>
> Key: HDFS-5890
> URL: https://issues.apache.org/jira/browse/HDFS-5890
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Reporter: Vinay
> Assignee: Vinay
> Fix For: HDFS-5535 (Rolling upgrades)
>
> Attachments: HDFS-5890.patch
>
>
> Avoid NPE in datanode heartbeat messages.
> {noformat}2014-02-05 17:24:11,347 WARN org.apache.hadoop.ipc.Server: IPC
> Server handler 5 on 9000, call
> org.apache.hadoop.hdfs.server.protocol.DatanodeProtocol.sendHeartbeat from
> 10.18.40.32:13299 Call#1721 Retry#0: error: java.lang.NullPointerException
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.protocolPB.PBHelper.convertRollingUpgradeStatus(PBHelper.java:1460)
> at
> org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB.sendHeartbeat(DatanodeProtocolServerSideTranslatorPB.java:124)
> at
> org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos$DatanodeProtocolService$2.callBlockingMethod(DatanodeProtocolProtos.java:27704)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:605)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:932)
> at
> org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2048){noformat}
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