Cannot remove task with id taskId the task no longer exists – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

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Briefly, this error occurs when you try to remove a task in Elasticsearch using an ID that no longer exists or is incorrect. This could be due to the task being already completed, cancelled or deleted. To resolve this issue, you can verify the task ID and ensure it’s correct. If the task was completed or cancelled, there’s no need for action. If the task was deleted, you may need to recreate it if necessary. Also, ensure that your Elasticsearch cluster is healthy and functioning properly to avoid such issues.

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This guide will help you check for common problems that cause the log ” cannot remove task with id {” + taskId + “}; the task no longer exists ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: persistent, task.

Log Context

Log “cannot remove task with id {” + taskId + “}; the task no longer exists” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public Builder removeTask(String taskId) {
 if (tasks.remove(taskId) != null) {
 changed = true;
 } else {
 throw new ResourceNotFoundException("cannot remove task with id {" + taskId + "}; the task no longer exists");
 return this;
 }  /**


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