[ https://issues.apache.org/jira/browse/HDFS-8829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14706335#comment-14706335 ]
Vinayakumar B commented on HDFS-8829: ------------------------------------- Changes looks great. 1. Need to add this new configuration in the {{hdfs-default.xml}} and In the description need to mention about AutoTuning, it would help users. I believe there is also a testcase which will fail, if entry not found in xml. > DataNode sets SO_RCVBUF explicitly is disabling tcp auto-tuning > --------------------------------------------------------------- > > Key: HDFS-8829 > URL: https://issues.apache.org/jira/browse/HDFS-8829 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode > Affects Versions: 2.3.0, 2.6.0 > Reporter: He Tianyi > Assignee: He Tianyi > Attachments: HDFS-8829.0001.patch > > > {code:java} > private void initDataXceiver(Configuration conf) throws IOException { > // find free port or use privileged port provided > TcpPeerServer tcpPeerServer; > if (secureResources != null) { > tcpPeerServer = new TcpPeerServer(secureResources); > } else { > tcpPeerServer = new TcpPeerServer(dnConf.socketWriteTimeout, > DataNode.getStreamingAddr(conf)); > } > > tcpPeerServer.setReceiveBufferSize(HdfsConstants.DEFAULT_DATA_SOCKET_SIZE); > {code} > The last line sets SO_RCVBUF explicitly, thus disabling tcp auto-tuning on > some system. > Shall we make this behavior configurable? -- This message was sent by Atlassian JIRA (v6.3.4#6332)