xuekang created YARN-8311:
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Summary: Too many ports are occupied when AM UI is accessed
Key: YARN-8311
URL: https://issues.apache.org/jira/browse/YARN-8311
Project: Hadoop YARN
Issue Type: Bug
Components: webapp
Affects Versions: 2.7.2
Reporter: xuekang
If someone open the AM UI when the app is running, the RM periodically fetch
the page from AM and return to the user. But the connection between RM and AM
is created every time and is not closed instantly. So after some time, lots of
ports are occupied, especially for long-running services. When another access
comes, there may be an error:
2018-05-17 11:33:14,567 INFO org.apache.http.impl.client.DefaultHttpClient: I/O
exception (java.net.BindException) caught when connecting to the target host:
Address already in use
Actually, it is the same problem as YARN-1703 , but I don't know why it was
cancelled by YARN-3217.
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