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 /*
  * Licensed 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 com.facebook.presto.execution;
import static com.google.common.base.Preconditions.checkArgument;
public enum StageState
{
    
Stage is planned but has not been scheduled yet. A stage will be in the planned state until, the dependencies of the stage have begun producing output.
    PLANNED(falsefalse),
    
Stage tasks are being scheduled on nodes.
    SCHEDULING(falsefalse),
    
Stage has been scheduled on nodes and ready to execute, but all tasks are still queued.
    SCHEDULED(falsefalse),
    
Stage is running.
    RUNNING(falsefalse),
    
Stage has finished executing and all output has been consumed.
    FINISHED(truefalse),
    
Stage was canceled by a user.
    CANCELED(truefalse),
    
Stage was aborted due to a failure in the query. The failure was not in this stage.
    ABORTED(truetrue),
    
Stage execution failed.
    FAILED(truetrue);
    private final boolean doneState;
    private final boolean failureState;
    StageState(boolean doneStateboolean failureState)
    {
        checkArgument(!failureState || doneState"%s is a non-done failure state"name());
        this. = doneState;
        this. = failureState;
    }

    
Is this a terminal state.
    public boolean isDone()
    {
        return ;
    }

    
Is this a non-success terminal state.
    public boolean isFailure()
    {
        return ;
    }
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