@Before
  public void setUp() throws Exception {
    vm0 = VM.getVM(0);
    vm1 = VM.getVM(1);
    vm2 = VM.getVM(2);
    vm3 = VM.getVM(3);

    overflowDirectory = temporaryFolder.newFolder("overflowDir");
  }
This test verifies the size API for 100 thousand put operations (done synch/asynch) on
PartitionedRegions with different combinations of Scope and Redundancy (Scope DIST_ACK,
Redundancy 1 AND Scope DIST_NO_ACK, Redundancy 0).
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/PartitionedRegionSizeDUnitTest.java