org.apache.flink.runtime.execution.ExecutionState 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.flink.runtime.execution;
/**
* An enumeration of all states that a task can be in during its execution.
* Tasks usually start in the state {@code CREATED} and switch states according to
* this diagram:
* {@code
*
* CREATED -> SCHEDULED -> DEPLOYING -> RUNNING -> FINISHED
* | | |
* | | +------+
* | V V
* | CANCELLING -----+----> CANCELED
* | |
* +-------------------------+
*
* ... -> FAILED
* }
*
* It is possible to enter the {@code FAILED} state from any other state.
*
* The states {@code FINISHED}, {@code CANCELED}, and {@code FAILED} are
* considered terminal states.
*/
public enum ExecutionState {
CREATED,
SCHEDULED,
DEPLOYING,
RUNNING,
FINISHED,
CANCELING,
CANCELED,
FAILED;
public boolean isTerminal() {
return this == FINISHED || this == CANCELED || this == FAILED;
}
}