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https://issues.apache.org/jira/browse/HDFS-14042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16674295#comment-16674295
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Virajith Jalaparti commented on HDFS-14042:
-------------------------------------------
Thanks for reporting this [~elgoiri]. [^HDFS-14042.001.patch] fixes this. The
NPE seems to have occurred because the lifeline RPC was called after the set of
storages changed. I modified {{TestDataNodeLifeline}} to repro this.
> NPE when PROVIDED storage is missing
> ------------------------------------
>
> Key: HDFS-14042
> URL: https://issues.apache.org/jira/browse/HDFS-14042
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 3.3.0
> Reporter: Íñigo Goiri
> Assignee: Virajith Jalaparti
> Priority: Major
> Attachments: HDFS-14042.001.patch
>
>
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor.updateStorageStats(DatanodeDescriptor.java:460)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor.updateHeartbeatState(DatanodeDescriptor.java:390)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.HeartbeatManager.updateLifeline(HeartbeatManager.java:254)
> at
> org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager.handleLifeline(DatanodeManager.java:1789)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.handleLifeline(FSNamesystem.java:3997)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.sendLifeline(NameNodeRpcServer.java:1666)
> at
> org.apache.hadoop.hdfs.protocolPB.DatanodeLifelineProtocolServerSideTranslatorPB.sendLifeline(DatanodeLifelineProtocolServerSideTranslatorPB.java:62)
> at
> org.apache.hadoop.hdfs.protocol.proto.DatanodeLifelineProtocolProtos$DatanodeLifelineProtocolService$2.callBlockingMethod(DatanodeLifelineProtocolProtos.java:409)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:524)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1025)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:898)
> at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:844)
> 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:1876)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2727)
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