Submitting state update task to remove nodes due to decommissioning – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 2.4-2.9

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Briefly, this error occurs when OpenSearch is in the process of removing certain nodes from the cluster due to decommissioning. This could be due to manual decommissioning or automatic decommissioning triggered by certain conditions. To resolve this issue, ensure that the decommissioning process is completed successfully. If it’s manual decommissioning, verify that the nodes are no longer needed. If it’s automatic, check the conditions that triggered it and adjust the cluster settings if necessary. Also, monitor the cluster health and rebalance the load if required after the nodes are removed.

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This guide will help you check for common problems that cause the log ” submitting state update task to remove [{}] nodes due to decommissioning ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: cluster, task.

Log Context

Log “submitting state update task to remove [{}] nodes due to decommissioning” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

        nodesToBeDecommissioned.forEach(discoveryNode -> {
            final NodeRemovalClusterStateTaskExecutor.Task task = new NodeRemovalClusterStateTaskExecutor.Task(discoveryNode; reason);
            nodesDecommissionTasks.put(task; nodeRemovalExecutor);
        });"submitting state update task to remove [{}] nodes due to decommissioning"; nodesToBeDecommissioned.toString());


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