There are no contents in the hdfs-sockets directory Apache Hadoop Base version if 2.5.0 (using CDH 5.3.0)
On Tue, Feb 10, 2015 at 10:24 AM, Ted Yu <[email protected]> wrote: > The exception came from DomainSocket so using netstat wouldn't reveal the > conflict. > > What's the output from: > ls -l /var/run/hdfs-sockets/datanode > > Which hadoop release are you using ? > > Cheers > > On Tue, Feb 10, 2015 at 10:12 AM, Rajesh Thallam <[email protected] > > wrote: > >> I have been repeatedly trying to start datanode but it fails with bind >> exception saying address is already in use even though port is free >> >> I used below commands to check >> >> netstat -a -t --numeric-ports -p | grep 500 >> >> >> >> I have overridden default port 50070 with 50081 but the issue still >> persists. >> >> Starting DataNode with maxLockedMemory = 0 >> Opened streaming server at /172.19.7.160:50081 >> Balancing bandwith is 10485760 bytes/s >> Number threads for balancing is 5 >> Waiting for threadgroup to exit, active threads is 0 >> Shutdown complete. >> Exception in secureMain >> java.net.BindException: bind(2) error: Address already in use when trying >> to bind to '/var/run/hdfs-sockets/datanode' >> at org.apache.hadoop.net.unix.DomainSocket.bind0(Native Method) >> at >> org.apache.hadoop.net.unix.DomainSocket.bindAndListen(DomainSocket.java:191) >> at >> org.apache.hadoop.hdfs.net.DomainPeerServer.<init>(DomainPeerServer.java:40) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.getDomainPeerServer(DataNode.java:907) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.initDataXceiver(DataNode.java:873) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:1066) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:411) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2297) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2184) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2231) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2407) >> at >> org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2431) >> Exiting with status 1 >> hdfs-site.xml >> >> <property> >> <name>dfs.datanode.address</name> >> <value>hostname.dc.xx.org:50010</value> >> </property> >> <property> >> <name>dfs.datanode.ipc.address</name> >> <value>hostname.dc.xx.org:50020</value> >> </property> >> <property> >> <name>dfs.datanode.http.address</name> >> <value>hostname.dc.xx.org:50075</value> >> </property> >> >> Regards, >> RT >> > > -- Cheers, RT
