Failed to clean up task persistentTask getId – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.9

Briefly, this error occurs when Elasticsearch fails to delete a persistent task from its task management system. This could be due to a network issue, a node failure, or a problem with the cluster state. To resolve this issue, you can try restarting the Elasticsearch node, checking the network connectivity, or verifying the health of the cluster. If the problem persists, you may need to manually delete the task from the task management index.

This guide will help you check for common problems that cause the log ” failed to clean up task [” + persistentTask.getId() + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, task, persistent.

Log Context

Log “failed to clean up task [” + persistentTask.getId() + “]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                    logger.debug("task [{}] cleaned up"; persistentTask.getId());

                public void onFailure(Exception e) {
                    logger.warn(() -> "failed to clean up task [" + persistentTask.getId() + "]"; e);
            }; () -> completing.remove(shardFollowTask)); listener -> {
                 * We are executing under the system context; on behalf of the user to clean up the shard follow task after the follower
                 * index was deleted. This is why the system role includes the privilege for persistent task completion.


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