Ahmed Hussein created HDFS-16207:
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Summary: Remove NN logs stack trace for non-existent xattr query
Key: HDFS-16207
URL: https://issues.apache.org/jira/browse/HDFS-16207
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 3.4.0, 2.10.2, 3.3.2, 3.2.4
Reporter: Ahmed Hussein
Assignee: Ahmed Hussein
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:
{code:bash}
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)
{code}
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