for k, v := range b.cachesRoot {
		tmp := make([]string, len(v))
		copy(tmp, v)
		dst2[k] = tmp
	}

	return dst, dst2
}

// deleteAll will delete all on disk data for ALL caches.
// Deletes are performed concurrently.
func (b *bucketMetacache) deleteAll() {
	ctx := context.Background()

	objAPI := newObjectLayerFn()
	if objAPI == nil {
		return
	}

	ez, ok := objAPI.(deleteAllStorager)

func (a Action) DeleteVersioned() bool {
	return a == DeleteVersionAction || a == DeleteRestoredVersionAction
}

// DeleteAll - Returns true if the action demands deleting all versions of an object
func (a Action) DeleteAll() bool {
	return a == DeleteAllVersionsAction || a == DelMarkerDeleteAllVersionsAction
}

// Delete - Returns true if action demands delete on all objects (including restored)

  istioctl waypoint delete --all --namespace default`,
		Args: func(cmd *cobra.Command, args []string) error {
			if deleteAll && len(args) > 0 {
				return fmt.Errorf("cannot specify waypoint names when deleting all waypoints")
			}
			if !deleteAll && len(args) == 0 {
				return fmt.Errorf("must either specify a waypoint name or delete all using --all")
			}
			return nil
		},

            logger.debug("Delete badword. {} badword: {}", arraySettings.arraySettingsIndexName, badWord);
        }
        arraySettings.delete(BAD_WORD_SETTINGD_KEY, badWord);
    }

    public void deleteAll() {
        if (logger.isDebugEnabled()) {
            logger.debug("Add all badword. {}", arraySettings.arraySettingsIndexName);
        }
        arraySettings.delete(BAD_WORD_SETTINGD_KEY);
    }

    }

    public long getQueryWordsNum() {
        return suggester.getQueryWordsNum();
    }

    public boolean deleteAllWords() {
        final SuggestDeleteResponse response = suggester.indexer().deleteAll();
        if (response.hasError()) {
            logger.warn("Failed to delete all words.", response.getErrors().get(0));
            return false;
        }
        refresh();
        return true;
    }

        // TODO Long, Integer, String supported only.

        // setup condition
        cb.query().addOrderBy_LastAccessTime_Desc();

        buildSearchCondition(failureUrlPager, cb);
    }

    public void deleteAll(final FailureUrlPager failureUrlPager) {
        failureUrlBhv.queryDelete(cb -> {
            buildSearchCondition(failureUrlPager, cb);
        });
    }

            logger.debug("Delete elevateword. {} elevateword: {}", arraySettings.arraySettingsIndexName, elevateWord);
        }
        arraySettings.delete(ELEVATE_WORD_SETTINGD_KEY, elevateWord);
    }

    public void deleteAll() {
        if (logger.isDebugEnabled()) {
            logger.debug("Delete all elevateword. {}", arraySettings.arraySettingsIndexName);
        }
        arraySettings.delete(ELEVATE_WORD_SETTINGD_KEY);
    }

        assertTrue(fesenClient.prepareSearch("fess_crawler.queue").setQuery(QueryBuilders.termQuery("sessionId", "id2")).execute()
                .actionGet().getHits().getTotalHits().value > 0);

        urlQueueService.deleteAll();
        assertFalse(fesenClient.prepareSearch("fess_crawler.queue").setQuery(QueryBuilders.termQuery("sessionId", "id1")).execute()
                .actionGet().getHits().getTotalHits().value > 0);

        dataService.store(accessResult1);
        assertNotNull(dataService.getAccessResult("id1", "http://www.id1.com/"));

        dataService.deleteAll();

        assertNull(dataService.getAccessResult("id1", "http://www.id1.com/"));
        assertNull(dataService.getAccessResult("id2", "http://www.id2.com/"));
    }

		return
	}
	ez, ok := objAPI.(deleteAllStorager)
	if !ok {
		bugLogIf(ctx, errors.New("metacache.delete: expected objAPI to be 'deleteAllStorager'"))
		return
	}
	ez.deleteAll(ctx, minioMetaBucket, metacachePrefixForID(m.bucket, m.id))