Corrupted file detected checksum mismatch – How to solve related issues

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Corrupted file detected checksum mismatch – How to solve related issues

Opster Team

Jan-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Corrupted file detected checksum mismatch ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: discovery-file, handler, indices, recovery and source.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log “{} Corrupted file detected {} checksum mismatch” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void handleErrorOnSendFiles(Store store; StoreFileMetaData md; Exception e) throws Exception {
        final IOException corruptIndexException;
        if ((corruptIndexException = ExceptionsHelper.unwrapCorruption(e)) != null) {
            if (store.checkIntegrityNoException(md) == false) { // we are corrupted on the primary -- fail!
                logger.warn("{} Corrupted file detected {} checksum mismatch"; shardId; md);
                throw corruptIndexException;
            } else { // corruption has happened on the way to replica
                RemoteTransportException exception = new RemoteTransportException(
                    "File corruption occurred on recovery but checksums are ok"; null);


Run the Check-Up to get a customized report like this:

Analyze your cluster