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https://issues.apache.org/jira/browse/HDFS-16721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17600080#comment-17600080
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ASF GitHub Bot commented on HDFS-16721:
---------------------------------------

hadoop-yetus commented on PR #4847:
URL: https://github.com/apache/hadoop/pull/4847#issuecomment-1236374729

   :broken_heart: **-1 overall**
   
   
   
   
   
   
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[/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-client.txt](https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4847/1/artifact/out/results-checkstyle-hadoop-hdfs-project_hadoop-hdfs-client.txt)
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> Improve the check code of the important configuration item 
> “dfs.client.socket-timeout”.
> ---------------------------------------------------------------------------------------
>
>                 Key: HDFS-16721
>                 URL: https://issues.apache.org/jira/browse/HDFS-16721
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: dfsclient
>    Affects Versions: 3.1.3
>         Environment: Linux version 4.15.0-142-generic 
> (buildd@lgw01-amd64-039) (gcc version 5.4.0 20160609 (Ubuntu 
> 5.4.0-6ubuntu1~16.04.12))
> java version "1.8.0_162"
> Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
> Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)
>            Reporter: Jingxuan Fu
>            Assignee: Jingxuan Fu
>            Priority: Major
>              Labels: pull-request-available
>
> {code:java}
> <property>
>   <name>dfs.client.socket-timeout</name>
>   <value>60000</value>
>   <description>
>     Default timeout value in milliseconds for all sockets.
>   </description>
> </property>{code}
> "dfs.client.socket-timeout" as the default timeout value for all sockets is 
> applied in multiple places, it is a configuration item with significant 
> impact, but the value of this configuration item is not checked in the source 
> code and when it is set to an abnormal value just throw an overgeneralized 
> exception and cannot be corrected in time , which affects the normal use of 
> the program.
> {code:java}
> org.apache.hadoop.ipc.RemoteException(java.io.IOException): File 
> /hdfsapi/test/testhdfs.txt could only be written to 0 of the 1 minReplication 
> nodes. There are 1 datanode(s) running and 1 node(s) are excluded in this 
> operation.
>         at 
> org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.chooseTarget4NewBlock(BlockManager.java:2205)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSDirWriteFileOp.chooseTargetForNewBlock(FSDirWriteFileOp.java:294)
>         at 
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2731)
>         at 
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:892)
>         at 
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:568)
>         at 
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
>         at 
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:527)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1036)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:1000)
>         at org.apache.hadoop.ipc.Server$RpcCall.run(Server.java:928)
>         at java.base/java.security.AccessController.doPrivileged(Native 
> Method)
>         at java.base/javax.security.auth.Subject.doAs(Subject.java:423)
>         at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2916){code}
> So I used Precondition.checkArgument() to refine the code for checking this 
> configuration item.



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