@BeforeClass
  public static void setUp() throws Exception {
    System.setProperty("log4j.configurationFile", PROPERTIES_FILE);
  }
Test configuration and use of SlidingFilenameRolloverStrategy
@see SlidingFilenameRolloverStrategy
ql/src/test/org/apache/hadoop/hive/ql/log/TestSlidingFilenameRolloverStrategy.java