public boolean destroy(final EntryEventImpl eventArg, final boolean inTokenModeArg,
      final boolean duringRIArg, final boolean cacheWriteArg, final boolean isEvictionArg,
      final Object expectedOldValueArg, final boolean removeRecoveredEntryArg)
      throws CacheWriterException, EntryNotFoundException, TimeoutException {

    if (internalRegion == null) {
      throw new InternalGemFireError("The internalRegion for RegionMap " + this
          + " is null for event " + event);
    }

    event = eventArg;
    inTokenMode = inTokenModeArg;
    duringRI = duringRIArg;
    cacheWrite = cacheWriteArg;
    isEviction = isEvictionArg;
    expectedOldValue = expectedOldValueArg;
    removeRecoveredEntry = removeRecoveredEntryArg;

    if (event.isFromRILocalDestroy()) {
      // for RI local-destroy we don't want to keep tombstones.
      // In order to simplify things we just set this recovery
      // flag to true to force the entry to be removed
      removeRecoveredEntry = true;
    }

    cacheModificationLock.lockForCacheModification(internalRegion, event);
    final boolean locked = internalRegion.lockWhenRegionIsInitializing();
    try {
      while (retry) {
        retry = false;
        opCompleted = false;
        tombstone = null;
        haveTombstone = false;

        doContinue = false;
        abortDestroyAndReturnFalse = false;

        regionEntry = focusedRegionMap.getEntry(event);

        invokeTestHookForConcurrentOperation();

        try {
          if (logger.isTraceEnabled(LogMarker.LRU_TOMBSTONE_COUNT_VERBOSE)
              && !(internalRegion instanceof HARegion)) {
            logger.trace(LogMarker.LRU_TOMBSTONE_COUNT_VERBOSE,
                "ARM.destroy() inTokenMode={}; duringRI={}; riLocalDestroy={}; withRepl={}; fromServer={}; concurrencyEnabled={}; isOriginRemote={}; isEviction={}; operation={}; re={}",
                inTokenMode, duringRI, event.isFromRILocalDestroy(),
                internalRegion.getDataPolicy().withReplication(), event.isFromServer(),
                internalRegion.getConcurrencyChecksEnabled(), event.isOriginRemote(), isEviction,
                event.getOperation(), regionEntry);
          }

          // the logic in this method is already very involved, and adding tombstone
          // permutations to (re != null) greatly complicates it. So, we check
          // for a tombstone here and, if found, pretend for a bit that the entry is null
          if (regionEntry != null && regionEntry.isTombstone() && !removeRecoveredEntry) {
            tombstone = regionEntry;
            haveTombstone = true;
            regionEntry = null;
          }

          if (regionEntry == null) {
            checkTombstoneAndConcurrency();
            if (inTokenMode || retainForConcurrency) {
              handleMissingRegionEntry();
            }
          } else {
            handleExistingRegionEntry();
          }

          if (abortDestroyAndReturnFalse) {
            return false;
          }
          if (doContinue) {
            continue;
          }

          if (opCompleted) {
            EntryLogger.logDestroy(event);
          }
          return opCompleted;

        } finally {
          try {
            triggerDistributionAndListenerNotification();
          } finally {
            cancelExpiryTaskIfRegionEntryExisted();
          }
        }

      } // retry loop

    } finally {
      if (locked) {
        internalRegion.unlockWhenRegionIsInitializing();
      }
      cacheModificationLock.releaseCacheModificationLock(internalRegion, event);
    }
    return false;
  }
RegionMap Destroy operation.

<p>
Extracted from AbstractRegionMap.
geode-core/src/main/java/org/apache/geode/internal/cache/map/RegionMapDestroy.java