private void verifyRecoveredFromDiskBit(String key, boolean isFullGII,
      boolean versionTagBeenChanged) {
    LocalRegion lr = (LocalRegion) getCache().getRegion(REGION_NAME);
    DiskEntry re = (DiskEntry) lr.getRegionEntry(key);
    DiskId id = re.getDiskId();

    byte usebits = id.getUserBits();
    if (!versionTagBeenChanged && !isFullGII) {
      // in delta gii, versionTag not changed entry should kept the recoveredFromDisk bit
      assertTrue(EntryBits.isRecoveredFromDisk(usebits));
    } else {
      assertFalse(EntryBits.isRecoveredFromDisk(usebits));
    }
  }
P, R has key1 unchanged, make one unfinished operation on R to trigger delta gii.
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/GIIDeltaDUnitTest.java