Finished with response – How to solve this OpenSearch error

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when a task or operation in OpenSearch finishes and returns a response. The {} placeholders are typically filled with the task’s name and the response details. This isn’t necessarily an error, but could indicate an issue if the response is unexpected or undesirable. To resolve this, you should first understand the task that was performed and the response received. If the task failed, investigate the cause of the failure. If the response is incorrect, check the task parameters or the data it operated on. Ensure your OpenSearch cluster is healthy and properly configured.

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This guide will help you check for common problems that cause the log ” {} finished with response {} ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: response.

Log Context

Log “{} finished with response {}” classname is
We extracted the following from OpenSearch source code for those seeking an in-depth context :

    private LoggingTaskListener() {}

    public void onResponse(Task task; Response response) {"{} finished with response {}"; task.getId(); response);

    public void onFailure(Task task; Exception e) {
        logger.warn(() -> new ParameterizedMessage("{} failed with exception"; task.getId()); e);


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