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When using connections secured with SSL, a connection close comprises of a bi-directional SSL_shutdown(). The second part of the bi-directional shutdown requires that the client also close the socket explicitly, and the server blocks till it gets the close notification from the client. This patch ensures that the above happens. Without this fix, the impala-shell was found to hang over connections secured with SSL when an error was encountered. Change-Id: I814df93bbcd457ad3f96b4c1ef5d8b0ddd6d141f Reviewed-on: http://gerrit.cloudera.org:8080/6587 Reviewed-by: Sailesh Mukil <sailesh@cloudera.com> Tested-by: Impala Public Jenkins