zhengchenyu created HADOOP-13909:
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Summary: Add serviceRestart function to the class AbstractService
so that we could hot start some service or thread.
Key: HADOOP-13909
URL: https://issues.apache.org/jira/browse/HADOOP-13909
Project: Hadoop Common
Issue Type: Wish
Components: common
Reporter: zhengchenyu
Priority: Minor
In our cluster, we found that the web service was not available, maybe jetty
server didn't close the socket normally so that so many connection keep the
state of CLOSE_WAIT. Here we decide to restart the resourcemanager, then
problem is solved.But we must know other service of the resourcemanager is
normal.
In this case, we must restart the resourcemanager process, just because of web
service. Other service is paused because of restarting resourcemanager, but
other service is normal.
Here I wish to add a serviceRestart function so that we could only restart the
web service thread when web service is not normal. This operation won't
influence other service.
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