Github user hyunsik commented on the pull request:
https://github.com/apache/tajo/pull/602#issuecomment-113847577
I found some problem from unit tests through Travis.
``
java.net.ConnectException: Call From
testing-worker-linux-f25aadab-1-20030-linux-7-67640030/127.0.0.1 to
localhost:50374 failed on connection exception:
``
This error message means one of three cases:
* localhost is not 127.0.0.1
* port 50374 is denied by iptables
* server is already closed.
I'll dig it more and I'll upload the new patch soon.
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