jps个别线程没有起来?

Question

把/etc/hosts下的localhost和hadoop000改成了自己主机的IP,跟着视频做下来发现jps的时候没有datanode的线程

Answer 1

Michael_PK 2018-01-12 13:29:01

看dn的日志

• 提问者 冯世宁 #1

  [hadoop@hadoop000 ~]$ tail -f  /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-datanode-hadoop000.log
          at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:829)
          at java.lang.Thread.run(Thread.java:745)
  2018-01-12 12:41:54,238 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Ending block pool service for: Block pool <registering> (Datanode Uuid unassigned) service to hadoop000/10.0.0.9:8020
  2018-01-12 12:41:54,346 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Removed Block pool <registering> (Datanode Uuid unassigned)
  2018-01-12 12:41:56,347 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Exiting Datanode
  2018-01-12 12:41:56,348 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 0
  2018-01-12 12:41:56,351 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG: 
  /************************************************************
  SHUTDOWN_MSG: Shutting down DataNode at hadoop000/10.0.0.9
  ************************************************************/

• Michael_PK 回复 提问者 冯世宁 #2

  根据错先自己搜索，别一遇到错就全贴出来

• 提问者 冯世宁 回复 Michael_PK #3

  您批评的对,不能一出错就全贴出来,应该自己上网查的,自己查了查是data和name的clusterID不一致,修改一直就好了,以后出现问题会先百度的,十分感谢老师和QQ群的管理.(ps:其实是想粘贴图片的但是这个评论好像不能粘贴图片)

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Answer 2

提问者 冯世宁 2018-01-12 12:49:41

[hadoop@hadoop000 bin]$ cd ../sbin/

[hadoop@hadoop000 sbin]$ pwd

/home/hadoop/app/hadoop-2.6.0-cdh5.7.0/sbin

[hadoop@hadoop000 sbin]$ ./start-dfs.sh 

18/01/12 12:41:40 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Starting namenodes on [hadoop000]

hadoop000: starting namenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-namenode-hadoop000.out

hadoop000: starting datanode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-datanode-hadoop000.out

Starting secondary namenodes [0.0.0.0]

0.0.0.0: Address 127.0.0.1 maps to localhost, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!

0.0.0.0: starting secondarynamenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-secondarynamenode-hadoop000.out

18/01/12 12:42:02 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

[hadoop@hadoop000 sbin]$ jps

3384 Jps

2965 NameNode

3275 SecondaryNameNode

[hadoop@hadoop000 sbin]$