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