@Test public void testTimeStampColumnName() {
    Assert.assertEquals("Time column name need to match to ensure serdeser compatibility",
        DruidConstants.DEFAULT_TIMESTAMP_COLUMN,
        DruidTable.DEFAULT_TIMESTAMP_COLUMN);
  }
Test Class for Druid Record Writer.
druid-handler/src/test/org/apache/hadoop/hive/ql/io/TestDruidRecordWriter.java