[jira] [Created] (HIVE-12247) HiveServer2 in HTTP mode should print a relevant error message when it's threadpool is configured such that it cannot create appropriate acceptor threads while starting up

[Vaibhav Gumashta (JIRA)]

Vaibhav Gumashta created HIVE-12247:
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             Summary: HiveServer2 in HTTP mode should print a relevant error 
message when it's threadpool is configured such that it cannot create 
appropriate acceptor threads while starting up
                 Key: HIVE-12247
                 URL: https://issues.apache.org/jira/browse/HIVE-12247
             Project: Hive
          Issue Type: Bug
          Components: HiveServer2
    Affects Versions: 1.1.0, 1.2.0
            Reporter: Vaibhav Gumashta


When run in HTTP mode, HS2 uses embedded jetty. The number of acceptor threads 
created are based on this formula 
(http://grepcode.com/file/repo1.maven.org/maven2/org.eclipse.jetty.aggregate/jetty-plus/7.6.0.v20120127/org/eclipse/jetty/server/nio/SelectChannelConnector.java#80):
{code}
(Math.max(1,(Runtime.getRuntime().availableProcessors()+3)/4));
{code}
In cases where {{hive.server2.thrift.max.worker.threads}} is set to a lower 
value than the above, we should print out a relevant error message.



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