apache/hadoop · error · InvalidInputException

Input snapshot is not found

Error message

Input snapshot is not found

What it means

Error "Input snapshot is not found" thrown in apache/hadoop.

Source

Thrown at hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpSync.java:150

      if (isRdiff()) {
        // If fromSnapshot isn't current dir then do a time check
        if (!from.equals("")
            && fromSnapshotStat.getModificationTime() < toSnapshotStat
            .getModificationTime()) {
          throw new HadoopIllegalArgumentException("Snapshot " + from
              + " should be newer than " + to);
        }
      } else {
        // If toSnapshot isn't current dir then do a time check
        if(!to.equals("")
            && fromSnapshotStat.getModificationTime() > toSnapshotStat
            .getModificationTime()) {
          throw new HadoopIllegalArgumentException("Snapshot " + to
              + " should be newer than " + from);
        }
      }
    } catch (FileNotFoundException nfe) {
      throw new InvalidInputException("Input snapshot is not found", nfe);
    }

    return true;
  }

  /**
   * Check if the source and target filesystems support snapshots.
   */
  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)) {

View on GitHub (pinned to 2add963021)

Solutions

1. Verify the named snapshot exists on the source directory.
2. Create the snapshot before running distcp sync.

When it happens

Trigger: The snapshot named for distcp sync does not exist.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/7ea84758695af1b3. Report an issue: GitHub.