878546711f8e4b5ca7fd415cc3a23c17e4d679b2,heron/instance/tests/java/com/twitter/heron/grouping/CustomGroupingTest.java,CustomGroupingTest,after,#,90

Before Change


    tupleReceived = 0;
    customGroupingInfoInPrepare = null;

    testLooper.exitLoop();
    slaveLooper.exitLoop();
    threadsPool.shutdownNow();

After Change


    tupleReceived = 0;
    customGroupingInfoInPrepare = null;

    if (testLooper != null) {
      testLooper.exitLoop();
    }
    if (slaveLooper != null) {
      slaveLooper.exitLoop();