Package org.elasticsearch.tasks

Class CancellableTask

java.lang.Object
org.elasticsearch.tasks.Task
org.elasticsearch.tasks.CancellableTask
Direct Known Subclasses:
AllocatedPersistentTask, BulkByScrollTask, SearchShardTask, SearchTask
public abstract class CancellableTask
extends Task
A task that can be canceled

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.elasticsearch.tasks.Task

    Task.Status

  • Field Summary

    Fields inherited from class org.elasticsearch.tasks.Task

    X_OPAQUE_ID

  • Constructor Summary

    Constructors 
    Constructor Description
    CancellableTask​(long id, java.lang.String type, java.lang.String action, java.lang.String description, TaskId parentTaskId, java.util.Map<java.lang.String,​java.lang.String> headers)  

  • Method Summary

    Modifier and Type Method Description
    boolean cancelOnParentLeaving()
    Returns true if this task should be automatically cancelled if the coordinating node that requested this task left the cluster.
    java.lang.String getReasonCancelled()
    The reason the task was cancelled or null if it hasn't been cancelled.
    boolean isCancelled()  
    protected void onCancelled()
    Called after the task is cancelled so that it can take any actions that it has to take.
    abstract boolean shouldCancelChildrenOnCancellation()
    Returns true if this task can potentially have children that need to be cancelled when it parent is cancelled.

    Methods inherited from class org.elasticsearch.tasks.Task

    getAction, getDescription, getHeader, getId, getParentTaskId, getStartTime, getStatus, getType, result, result, taskInfo, taskInfo

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • CancellableTask

      public CancellableTask​(long id, java.lang.String type, java.lang.String action, java.lang.String description, TaskId parentTaskId, java.util.Map<java.lang.String,​java.lang.String> headers)

  • Method Details

    • cancelOnParentLeaving

      public boolean cancelOnParentLeaving()
      Returns true if this task should be automatically cancelled if the coordinating node that requested this task left the cluster.

    • shouldCancelChildrenOnCancellation

      public abstract boolean shouldCancelChildrenOnCancellation()
      Returns true if this task can potentially have children that need to be cancelled when it parent is cancelled.

    • isCancelled

      public boolean isCancelled()

    • getReasonCancelled

      @Nullable public java.lang.String getReasonCancelled()
      The reason the task was cancelled or null if it hasn't been cancelled.

    • onCancelled

      protected void onCancelled()
      Called after the task is cancelled so that it can take any actions that it has to take.