Request getModelId creating new assignment failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.3-8.7

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Briefly, this error occurs when Elasticsearch fails to create a new assignment due to issues with the getModelId request. This could be due to incorrect request syntax, insufficient permissions, or issues with the underlying data. To resolve this, ensure the request syntax is correct and the user has the necessary permissions. Also, check the integrity of the data being used in the request. If the problem persists, consider checking the Elasticsearch logs for more detailed error information.

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This guide will help you check for common problems that cause the log ” [” + request.getModelId() + “] creating new assignment failed ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, request.

Log Context

Log “[” + request.getModelId() + “] creating new assignment failed” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :


        ActionListener waitForDeploymentToStart = ActionListener.wrap(
            modelAssignment -> waitForDeploymentState(request.getModelId(); request.getTimeout(); request.getWaitForState(); listener);
            e -> {
                logger.warn(() -> "[" + request.getModelId() + "] creating new assignment failed"; e);
                if (ExceptionsHelper.unwrapCause(e) instanceof ResourceAlreadyExistsException) {
                    e = new ElasticsearchStatusException(
                        "Cannot start deployment [{}] because it has already been started";


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