org.apache.bookkeeper.util.BookKeeperConstants Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.bookkeeper.util;
/**
* This class contains constants used in BookKeeper.
*/
public class BookKeeperConstants {
// //////////////////////////
// /////Basic constants//////
// //////////////////////////
public static final String LEDGER_NODE_PREFIX = "L";
public static final String COLON = ":";
public static final String VERSION_FILENAME = "VERSION";
public static final String BOOKIE_STATUS_FILENAME = "BOOKIE_STATUS";
public static final String PASSWD = "passwd";
public static final String CURRENT_DIR = "current";
public static final String METADATA_CACHE = "metadata-cache";
public static final String READONLY = "readonly";
// //////////////////////////
// ///// Znodes//////////////
// //////////////////////////
public static final String AVAILABLE_NODE = "available";
public static final String COOKIE_NODE = "cookies";
public static final String UNDER_REPLICATION_NODE = "underreplication";
public static final String UNDER_REPLICATION_LOCK = "locks";
public static final String DISABLE_NODE = "disable";
public static final String LOSTBOOKIERECOVERYDELAY_NODE = "lostBookieRecoveryDelay";
public static final String CHECK_ALL_LEDGERS_CTIME = "checkallledgersctime";
public static final String PLACEMENT_POLICY_CHECK_CTIME = "placementpolicycheckctime";
public static final String REPLICAS_CHECK_CTIME = "replicascheckctime";
public static final String DEFAULT_ZK_LEDGERS_ROOT_PATH = "/ledgers";
public static final String LAYOUT_ZNODE = "LAYOUT";
public static final String INSTANCEID = "INSTANCEID";
public static final String DISABLE_HEALTH_CHECK = "disableHealthCheck";
/**
* Set the max log size limit to 1GB. It makes extra room for entry log file before
* hitting hard limit '2GB'. So we don't need to force roll entry log file when flushing
* memtable (for performance consideration)
*/
public static final long MAX_LOG_SIZE_LIMIT = 1 * 1024 * 1024 * 1024;
public static final String FEATURE_REPP_DISABLE_DURABILITY_ENFORCEMENT = "repp_disable_durability_enforcement";
public static final String FEATURE_DISABLE_ENSEMBLE_CHANGE = "disable_ensemble_change";
public static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
}