package org.apache.helix;
/*
* 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.
*/
/**
* helix defined states
* ERROR : when errors happen during state transitions, transit to ERROR state
* participant will also invoke state-model.on-err(), ignore errors in state-model.on-err()
* when drop resource in ERROR state and not disabled, controller sends ERROR->DROPPED transition
* if errors happen in ERROR->DROPPED transition, participant will disable resource/partition
* when disable resource/partition in ERROR state, resource/partition will be marked disabled
* but controller not send any transitions
* when reset resource/partition in ERROR state and not disabled
* controller send ERROR->initial-state transition
* if errors happen in ERROR->initial-state transition, remain in ERROR state
* DROPPED : when drop resource in a non-ERROR state and not disabled
* controller sends all the transitions from current-state to initial-state
* then sends initial-state->DROPPED transition
* @see HELIX-43: add support for dropping partitions in error state
*/
public enum HelixDefinedState {
ERROR,
DROPPED
}