Updating stats of transform failed – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.4-8.2

Briefly, this error occurs when Elasticsearch fails to update the statistics of a data transform. This could be due to insufficient permissions, a network issue, or a problem with the transform itself. To resolve this, you can check the user’s permissions, ensure the network connection is stable, and verify the integrity of the transform. If the problem persists, consider restarting the Elasticsearch service or reindexing the data.

This guide will help you check for common problems that cause the log ” [{}] updating stats of transform failed. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “[{}] updating stats of transform failed.” classname is ClientTransformIndexer.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                        "Failure updating stats of transform; unexpected version conflict of internal state; resetting to recover: "
                            + statsExc.getMessage()
                    assert false : "[" + getJobId() + "] updating stats of transform failed; unexpected version conflict of internal state";
                } else {
                    logger.error(new ParameterizedMessage("[{}] updating stats of transform failed."; transformConfig.getId()); statsExc);
                    auditor.warning(getJobId(); "Failure updating stats of transform: " + statsExc.getMessage());


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