apache/maven · error · TransferFailedException

Unable to add checksum for unsupported algorithm " + algorit

Error message

Unable to add checksum for unsupported algorithm " + algorithm

What it means

Error "Unable to add checksum for unsupported algorithm " + algorithm" thrown in apache/maven.

Source

Thrown at compat/maven-compat/src/main/java/org/apache/maven/repository/legacy/DefaultWagonManager.java:593

    }

    private void cleanupTemporaryFiles(List<File> files) {
        for (File file : files) {
            // really don't care if it failed here only log warning
            if (!file.delete()) {
                logger.warn("skip failed to delete temporary file : " + file.getAbsolutePath());
                file.deleteOnExit();
            }
        }
    }

    private ChecksumObserver addChecksumObserver(Wagon wagon, String algorithm) throws TransferFailedException {
        try {
            ChecksumObserver checksumObserver = new ChecksumObserver(algorithm);
            wagon.addTransferListener(checksumObserver);
            return checksumObserver;
        } catch (NoSuchAlgorithmException e) {
            throw new TransferFailedException("Unable to add checksum for unsupported algorithm " + algorithm, e);
        }
    }

    private void handleChecksumFailure(String checksumPolicy, String message, Throwable cause)
            throws ChecksumFailedException {
        if (ArtifactRepositoryPolicy.CHECKSUM_POLICY_FAIL.equals(checksumPolicy)) {
            throw new ChecksumFailedException(message, cause);
        } else if (!ArtifactRepositoryPolicy.CHECKSUM_POLICY_IGNORE.equals(checksumPolicy)) {
            // warn if it is set to anything other than ignore
            logger.warn("*** CHECKSUM FAILED - " + message + " - IGNORING");
        }
        // otherwise it is ignored
    }

    private void verifyChecksum(
            ChecksumObserver checksumObserver,
            File destination,
            File tempDestination,

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at compat/maven-compat/src/main/java/org/apache/maven/repository/legacy/DefaultWagonManager.java:593 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/maven@e4093d4e12 (2026-08-21). Data as JSON: /api/errors/10a7dc0cb1ebc9e1. Report an issue: GitHub.