apache/hadoop · error · UnsupportedOperationException

The source file system " + srcFs.getScheme() + " does not su

Error message

The source file system " + srcFs.getScheme() + " does not support getSnapshotDiffReport

What it means

Error "The source file system " + srcFs.getScheme() + " does not support getSnapshotDiffReport" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpSync.java:176

   */
  private void checkFilesystemSupport(Path sourceDir, Path targetDir,
      FileSystem srcFs, FileSystem tgtFs) throws IOException {
    if (!srcFs.hasPathCapability(sourceDir,
        CommonPathCapabilities.FS_SNAPSHOTS)) {
      throw new UnsupportedOperationException(
          "The source file system " + srcFs.getScheme()
              + " does not support snapshot.");
    }
    if (!tgtFs.hasPathCapability(targetDir,
        CommonPathCapabilities.FS_SNAPSHOTS)) {
      throw new UnsupportedOperationException(
          "The target file system " + tgtFs.getScheme()
              + " does not support snapshot.");
    }
    try {
      getSnapshotDiffReportMethod(srcFs);
    } catch (NoSuchMethodException e) {
      throw new UnsupportedOperationException(
          "The source file system " + srcFs.getScheme()
              + " does not support getSnapshotDiffReport",
          e);
    }
    try {
      getSnapshotDiffReportMethod(tgtFs);
    } catch (NoSuchMethodException e) {
      throw new UnsupportedOperationException(
          "The target file system " + tgtFs.getScheme()
              + " does not support getSnapshotDiffReport",
          e);
    }

  }

  public boolean sync() throws IOException {
    if (!preSyncCheck()) {
      return false;

View on GitHub (pinned to 2add963021)

Solutions

1. Upgrade or configure the source filesystem to support getSnapshotDiffReport.
2. Avoid snapshot-diff based sync for this source.

When it happens

Trigger: The source filesystem does not implement getSnapshotDiffReport.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/c3757ff17682a618. Report an issue: GitHub.