JobTracker 没有起来 datanode没有起来

最新推荐文章于 2024-04-24 10:36:10 发布

转载最新推荐文章于 2024-04-24 10:36:10 发布 · 1.2k 阅读

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本文详细阐述了在使用Hadoop时遇到JobTracker启动失败的问题，原因在于端口9001已被其他进程占用。通过提供解决步骤，包括检查当前端口占用情况、使用netstat命令查看端口状态以及最终使用pkill命令结束相关进程，成功解决了端口冲突导致的启动失败问题。

转载自：http://hi.baidu.com/wylinux/item/eaeafb43fcb406af60d7b931

BindException: Problem binding to cs-01.localhost.localdomain/192.168.0.4:9001 : Address already in use

2012-06-10 20:43:03,004 INFO org.apache.hadoop.mapred.JobTracker: Starting jobtracker with owner as hadoop
2012-06-10 20:43:03,095 FATAL org.apache.hadoop.mapred.JobTracker: java.net.BindException: Problem binding to cs-01.localhost.localdomain/192.168.0.4:9001 : Address already in use
        at org.apache.hadoop.ipc.Server.bind(Server.java:226)
        at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:300)
        at org.apache.hadoop.ipc.Server.<init>(Server.java:1478)
        at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:505)
        at org.apache.hadoop.ipc.RPC.getServer(RPC.java:466)
        at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2288)
        at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:2171)
        at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:300)
        at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:291)
        at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:4956)
Caused by: java.net.BindException: Address already in use
        at sun.nio.ch.Net.bind(Native Method)
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:126)
        at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:59)
        at org.apache.hadoop.ipc.Server.bind(Server.java:224)
        ... 9 more
[hadoop@cs-01 logs]$ netstat -tunlp
(No info could be read for "-p": geteuid()=502 but you should be root.)
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name
tcp        0      0 0.0.0.0:10050               0.0.0.0:*                   LISTEN      -
tcp        0      0 0.0.0.0:9425                0.0.0.0:*                   LISTEN      -
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      -
tcp        0      0 127.0.0.1:25                0.0.0.0:*                   LISTEN      -
tcp        0      0 ::ffff:192.168.0.4:9000     :::*                        LISTEN      -
tcp        0      0 ::ffff:192.168.0.4:9001     :::*                        LISTEN      -
tcp        0      0 :::50090                    :::*                        LISTEN      -
tcp        0      0 :::50030                    :::*                        LISTEN      -
tcp        0      0 :::50070                    :::*                        LISTEN      -
tcp        0      0 :::22                       :::*                        LISTEN      -
tcp        0      0 ::1:25                      :::*                        LISTEN      -
udp        0      0 0.0.0.0:68                  0.0.0.0:*                               -
端口没有完全释放可能实际使用的时候就算是关闭集群，端口显示还是占用的