org.apache.hudi.org.apache.hadoop.hbase.master.assignment.ServerState 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.hadoop.hbase.master.assignment;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Server State.
*/
@InterfaceAudience.Private
public enum ServerState {
/**
* Initial state. Available.
*/
ONLINE,
/**
* Indicate that the server has crashed, i.e., we have already scheduled a SCP for it.
*/
CRASHED,
/**
* Only server which carries meta can have this state. We will split wal for meta and then
* assign meta first before splitting other wals.
*/
SPLITTING_META,
/**
* Indicate that the meta splitting is done. We need this state so that the UnassignProcedure
* for meta can safely quit. See the comments in UnassignProcedure.remoteCallFailed for more
* details.
*/
SPLITTING_META_DONE,
/**
* Server expired/crashed. Currently undergoing WAL splitting.
*/
SPLITTING,
/**
* WAL splitting done. This state will be used to tell the UnassignProcedure that it can safely
* quit. See the comments in UnassignProcedure.remoteCallFailed for more details.
*/
OFFLINE
}