Task is missing – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” task is missing ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: task.

Log Context

Log “task [{}] is missing”classname  is TransportTasksAction.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

operation.accept((OperationTask) task);
 } else {
 throw new ResourceNotFoundException("task [{}] doesn't support this operation"; request.getTaskId());
 } else {
 throw new ResourceNotFoundException("task [{}] is missing"; request.getTaskId());
 } else {
 for (Task task : taskManager.getTasks().values()) {
 if (request.match(task)) {
 operation.accept((OperationTask) task);


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