private void waitForAllStartersToBeReady() {
    try {
      startLine.await();
    } catch (InterruptedException ie) {
      throw new AssertionError("unexpected ", ie);
    } catch (BrokenBarrierException ex) {
      throw new AssertionError("unexpected ", ex);
    }
  }
Tests the bug where a get operation on an evicted entry fails to get value as the oplog is
deleted by the roller, but the entry was not rolled.
geode-core/src/integrationTest/java/org/apache/geode/internal/cache/ConcurrentRegionOperationsJUnitTest.java