[
https://issues.apache.org/jira/browse/HDFS-16207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ahmed Hussein updated HDFS-16207:
---------------------------------
Attachment: HDFS-16207-branch-2.10.001.patch
Status: Patch Available (was: In Progress)
Submitted HDFS-16207-branch-2.10.001.patch
*test-patch*
{code:bash}
dev-support/bin/test-patch \
--plugins="maven,checkstyle,javac,javadoc" \
--test-parallel=true \
--branch=branch-2.10 HDFS-16207-branch-2.10.001.patch
{code}
*unit-tests*
{code:bash}
mvn test
-Dtest=TestDFSShell,TestEncryptionZones,TestFileContextXAttr,TestNameNodeXAttr,TestWebHDFSXAttr
{code}
> 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
> Priority: Major
> Labels: pull-request-available
> Attachments: HDFS-16207-branch-2.10.001.patch
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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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