apache/beam · error · IOException

Unable to rename resource

Error message

Unable to rename resource %s to %s. No further information provided by underlying filesystem.

What it means

The catch-all branch of HadoopFileSystem.rename(): when fs.rename() returns false, the source exists, and the destination does not exist, Beam has no diagnosis and throws a generic IOException stating the underlying filesystem provided no further information.

Solutions

  1. Check NameNode health / safe-mode status and retry the rename.
  2. Verify write permission on the source's parent directory (rename requires it).
  3. Ensure src and dest share the same filesystem scheme; copy+delete instead if not.
  4. Inspect Hadoop client and NameNode logs for the suppressed cause.
Defensive patterns

Strategy: retry

Validate before calling

// Verify same filesystem scheme and parent write access before rename
if (!src.getScheme().equals(dest.getScheme())) {
  throw new IllegalArgumentException("Cross-filesystem rename not supported");
}

Try / catch

try {
  fileSystem.rename(srcs, dests);
} catch (IOException e) {
  // retry with backoff; check NameNode safe mode / permissions in logs
  retryWithBackoff(() -> fileSystem.rename(srcs, dests));
}

Prevention

When it happens

Trigger: Calling HadoopFileSystem.rename() where fs.rename() returns false with srcPath existing and destPath not existing — e.g. transient NameNode/RPC failures, path-level permission errors on the rename itself, or跨 filesystem moves.

Common situations: HDFS in safe mode, insufficient permission on the source's parent directory, or attempting to rename across different filesystems (e.g. hdfs:// to file://).

Understand the failure class

Background: "failed to write file", "Could not save figure", "Error saving remote file" — file write failed: causes and fixes across languages and libraries — this error's family across 38 libraries.

Related errors

AI-assisted analysis of apache/beam@12126d8942 (2026-09-13). Data as JSON: /api/errors/823f78094dce1715. Report an issue: GitHub.

Appendix: source

Thrown at sdks/java/io/hadoop-file-system/src/main/java/org/apache/beam/sdk/io/hdfs/HadoopFileSystem.java:291

        LOG.debug(LOG_DELETING_EXISTING_FILE, Path.getPathWithoutSchemeAndAuthority(destPath));
        fs.delete(destPath, false); // not recursive
        success = fs.rename(srcPath, destPath);
      }

      if (!success) {
        if (!fs.exists(srcPath)) {
          throw new FileNotFoundException(
              String.format(
                  "Unable to rename resource %s to %s as source not found.", srcPath, destPath));

        } else if (fs.exists(destPath)) {
          throw new FileAlreadyExistsException(
              String.format(
                  "Unable to rename resource %s to %s as destination already exists and couldn't be deleted.",
                  srcPath, destPath));

        } else {
          throw new IOException(
              String.format(
                  "Unable to rename resource %s to %s. No further information provided by underlying filesystem.",
                  srcPath, destPath));
        }
      }
    }
  }

  /** Ensures that the target directory exists for the given filePath. */
  private void mkdirs(Path filePath) throws IOException {
    final org.apache.hadoop.fs.FileSystem fs = filePath.getFileSystem(configuration);
    final Path targetDirectory = filePath.getParent();
    if (!fs.exists(targetDirectory)) {
      LOG.debug(LOG_CREATE_DIRECTORY, Path.getPathWithoutSchemeAndAuthority(targetDirectory));
      if (!fs.mkdirs(targetDirectory)) {
        throw new IOException(
            String.format(
                "Unable to create target directory %s. No further information provided by underlying filesystem.",

View on GitHub (pinned to 12126d8942)