Socket input operator test fail

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.217 sec
Running com.datatorrent.lib.io.SocketInputOperatorTest
Tests run: 2, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 43.02 sec <<< FAILURE!
TestWithSmallerBufferSize(com.datatorrent.lib.io.SocketInputOperatorTest) Time elapsed: 21.02 sec <<< FAILURE!
junit.framework.AssertionFailedError: expected:<We hd prev> but was:<>
at junit.framework.Assert.fail(Assert.java:50)
at junit.framework.Assert.failNotEquals(Assert.java:287)
at junit.framework.Assert.assertEquals(Assert.java:67)
at junit.framework.Assert.assertEquals(Assert.java:74)
at com.datatorrent.lib.io.SocketInputOperatorTest.TestWithSmallerBufferSize(SocketInputOperatorTest.java:147)