DatafeedId failed to remove task to stop unassigned datafeed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.7-8.9

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Briefly, this error occurs when Elasticsearch tries to stop a datafeed task that is unassigned or non-existent. This could be due to a misconfiguration or a network issue. To resolve this, you can try the following: 1) Check if the datafeed ID is correct and exists in your cluster. 2) Ensure that the Elasticsearch cluster is properly configured and all nodes are connected. 3) If the problem persists, you may need to restart your Elasticsearch cluster to clear any stuck tasks.

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This guide will help you check for common problems that cause the log ” [” + datafeedId + “] failed to remove task to stop unassigned datafeed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, task.

Log Context

Log “[” + datafeedId + “] failed to remove task to stop unassigned datafeed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                // already waits for these persistent tasks to disappear.
                        r -> auditDatafeedStopped(datafeedTask);
                        e -> logger.error("[" + datafeedId + "] failed to remove task to stop unassigned datafeed"; e)


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