java - mapreduce作业未运行

Question

我正在尝试运行mapreduce但能够运行低于错误

16/04/28 13:17:07 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
16/04/28 13:17:07 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
16/04/28 13:17:08 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 0 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:09 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 1 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:10 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 2 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:11 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 3 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:12 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 4 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:13 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 5 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)
16/04/28 13:17:14 INFO ipc.Client: Retrying connect to server: 0.0.0.0/0.0.0.0:8032. Already tried 6 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1000 MILLISECONDS)

请注意，经过以上验证，我已经检查了编号20620949和toster.ru/q/57046#answer_208326的问题，以及其他许多相关问题。如果我的本地计算机上未安装Ifound yarn ，请让我知道在MR中运行MR作业需要 yarn 一台机器，我的意思是在我的本地linux机器中(没有群集，什么都没有)，我们可以运行不带纱的MR作业吗？

Answer 1

使用hadoop-2时，YARN是默认的调度程序，用于管理资源/容器。
因此，必须具有YARN。您可以在单个主机上启动YARN服务，它不需要任何群集。