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  1. Hadoop HDFS
  2. HDFS-16207

Remove NN logs stack trace for non-existent xattr query

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      The NN logs a full stack trace every time a getXAttrs is called for a non-existent xattr. The logging has zero value add. The increased logging load may harm performance. Something is now probing for xattrs resulting in many lines of:

      2021-09-02 13:48:03,340 [IPC Server handler 5 on default port 59951] INFO  ipc.Server (Server.java:logException(3149)) - IPC Server handler 5 on default port 59951, call Call#17 Retry#0 org.apache.hadoop.hdfs.protocol.ClientProtocol.getXAttrs from 127.0.0.1:59961
      java.io.IOException: At least one of the attributes provided was not found.
      	at org.apache.hadoop.hdfs.server.namenode.FSDirXAttrOp.getXAttrs(FSDirXAttrOp.java:134)
      	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getXAttrs(FSNamesystem.java:8472)
      	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getXAttrs(NameNodeRpcServer.java:2317)
      	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getXAttrs(ClientNamenodeProtocolServerSideTranslatorPB.java:1745)
      	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
      	at org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:604)
      	at org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:572)
      	at org.apache.hadoop.ipc.ProtobufRpcEngine2$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine2.java:556)
      	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1093)
      	at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1155)
      	at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1083)
      	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:1900)
      	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:3088)
      
      

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        1. HDFS-16207-branch-2.10.001.patch
          9 kB
          Ahmed Hussein

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              • Assignee:
                ahussein Ahmed Hussein
                Reporter:
                ahussein Ahmed Hussein
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