ipc.Client: Retrying connect to server: .../10.0.0.27:10020. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
运行 时候爆出这个错
Exception in thread "main" java.io.IOException: java.net.ConnectException: Call From hadoop.slave01/192.168.121.133 to 0.0.0.0:10020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused
at org.apache.hadoop.mapred.ClientServiceDelegate.invoke(ClientServiceDelegate.java:344)
at org.apache.hadoop.mapred.ClientServiceDelegate.getJobStatus(ClientServiceDelegate.java:429)
at org.apache.hadoop.mapred.YARNRunner.getJobStatus(YARNRunner.java:601)
at org.apache.hadoop.mapreduce.Job$1.run(Job.java:323)
at org.apache.hadoop.mapreduce.Job$1.run(Job.java:320)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1758)
at org.apache.hadoop.mapreduce.Job.updateStatus(Job.java:320)
at org.apache.hadoop.mapreduce.Job.isComplete(Job.java:604)
at org.apache.hadoop.mapreduce.Job.monitorAndPrintJob(Job.java:1349)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1311)
at com.mr.wordcount.WordcountDriver.main(WordcountDriver.java:32)
FinalApplicationStatus=SUCCEEDED. Redirecting to job history server
ipc.Client: Retrying connect to server: hadoop-master/10.0.0.27:10020. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS)
要开启 sbin下面的 historyserver
mr-jobhistory-daemon.sh start historyserver
这个开启有点慢要等等；然后查看10200监听端口
netstat -an | grep 10020
直到看到，下面监听成功
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