Checking sha for – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.3-8.4

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Briefly, this error occurs when Elasticsearch is verifying the Secure Hash Algorithm (SHA) for a particular file or data. It’s part of the process to ensure data integrity and security. The error might be due to a corrupted file, mismatched SHA, or network issues. To resolve this, you can try re-downloading the file, ensuring the correct SHA is used, or checking your network connection. If the error persists, consider checking your Elasticsearch setup or the specific process that triggers this verification.

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

Log Context

Log “Checking sha for {}” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            // local deps should not have sha files!
            if (getShaFile(jarName).exists()) {
                throw new GradleException("SHA file " + getShaFile(jarName) + " exists for ignored dependency " + depName);
        } else {
  "Checking sha for {}"; jarName);
            checkSha(dependency; jarName; shaFiles);

    private String joinFilenames(Set shaFiles) {


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