@Test
  public void testHolesInMeta() throws Exception {
    byte[] family = Bytes.toBytes("family");
    this.region =
      initHRegion(tableName, Bytes.toBytes("x"), Bytes.toBytes("z"), method, CONF, false, family);
    byte[] rowNotServed = Bytes.toBytes("a");
    Get g = new Get(rowNotServed);
    try {
      region.get(g);
      fail();
    } catch (WrongRegionException x) {
      // OK
    }
    byte[] row = Bytes.toBytes("y");
    g = new Get(row);
    region.get(g);
  }
Writes very wide records and gets the latest row every time.. Flushes and compacts the region
aggressivly to catch issues. by flush / scan / compaction when joining threads
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java