[jira] [Created] (THRIFT-2274) TNonblockingServer and TThreadedSelectorServer do not close their channel selectors on exit and leak file descriptors

["Thomas Kielbus (JIRA)" <ji...@apache.org>]

Thomas Kielbus created THRIFT-2274:
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             Summary: TNonblockingServer and TThreadedSelectorServer do not close their channel selectors on exit and leak file descriptors
                 Key: THRIFT-2274
                 URL: https://issues.apache.org/jira/browse/THRIFT-2274
             Project: Thrift
          Issue Type: Bug
          Components: Java - Library
            Reporter: Thomas Kielbus


TNonblockingServer and TThreadedSelectorServer do not close their  channel selectors on exit and do not release all ressources.

This is an issue especially when such server implementations are started and stopped repeatedly within the same JVM. In our use case, we see hundreds of file descriptors being leaked on each Thrift server restart. We hit the OS limit on the number of open files pretty quickly.

The attached patch fixes the issue by simply calling Selector.close() when the relevant select threads exit (TNonBlockingServer::SelectAcceptThread, TThreadedSelectorServer::SelectorThread, TThreadedSelectorServer::AcceptThread)



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