protected void createPartitionedRegion(Object[] attributes) {
    dataStore1.invoke(PRColocationDUnitTest.class, "createPR", attributes);
    dataStore2.invoke(PRColocationDUnitTest.class, "createPR", attributes);
    dataStore3.invoke(PRColocationDUnitTest.class, "createPR", attributes);
    // make Local max memory = o for accessor
    attributes[2] = 0;
    accessor.invoke(PRColocationDUnitTest.class, "createPR", attributes);
  }
Test for hang condition observed with the PRHARedundancyProvider.createMissingBuckets code.

A parent region is populated with buckets. Then the child region is created simultaneously on
several nodes.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/execute/PRColocationDUnitTest.java