| 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 |
| } |
