@Before
  public void setUp() throws Exception {
    super.setUp();
    compactionChore = new MobFileCompactionChore(conf, batchSize);
  }
Mob file compaction chore in a generational batch mode test. 1. Enables batch mode for regular
MOB compaction, Sets batch size to 7 regions. Enables generational mode. 2. Disables periodic MOB
compactions, sets minimum age to archive to 10 sec 3. Creates MOB table with 20 regions 4. Loads
MOB data (randomized keys, 1000 rows), flushes data. 5. Repeats 4. two more times 6. Verifies
that we have 20 *3 = 60 mob files (equals to number of regions x 3) 7. Runs major MOB compaction.
8. Verifies that number of MOB files in a mob directory is 20 x4 = 80 9. Waits for a period of
time larger than minimum age to archive 10. Runs Mob cleaner chore 11 Verifies that number of MOB
files in a mob directory is 20. 12 Runs scanner and checks all 3 * 1000 rows.
hbase-server/src/test/java/org/apache/hadoop/hbase/mob/TestMobCompactionOptRegionBatchMode.java