apache/hadoop · error · SnapshotException

Directory is not a snapshottable directory: {}

Error message

Directory is not a snapshottable directory: {}

What it means

Error "Directory is not a snapshottable directory: {}" thrown in apache/hadoop.

Source

Thrown at hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/SnapshotManager.java:323

    }
    removeSnapshottable(d);
  }

  /**
  * Find the source root directory where the snapshot will be taken
  * for a given path.
  *
  * @return Snapshottable directory.
  * @throws IOException
  *           Throw IOException when the given path does not lead to an
  *           existing snapshottable directory.
  */
  public INodeDirectory getSnapshottableRoot(final INodesInPath iip)
      throws IOException {
    final String path = iip.getPath();
    final INodeDirectory dir = INodeDirectory.valueOf(iip.getLastINode(), path);
    if (!dir.isSnapshottable()) {
      throw new SnapshotException(
          "Directory is not a snapshottable directory: " + path);
    }
    return dir;
  }

  public void assertMarkedAsDeleted(INodesInPath iip, String snapshotName)
      throws IOException {
    final INodeDirectory dir = getSnapshottableRoot(iip);
    final Snapshot.Root snapshotRoot = dir.getDirectorySnapshottableFeature()
        .getSnapshotByName(dir, snapshotName)
        .getRoot();

    if (!snapshotRoot.isMarkedAsDeleted()) {
      throw new SnapshotException("Failed to gcDeletedSnapshot "
          + snapshotName + " from " + dir.getFullPathName()
          + ": snapshot is not marked as deleted");
    }
  }

View on GitHub (pinned to 2add963021)

Solutions

1. Enable snapshot capability on the directory with 'hdfs dfsadmin -allowSnapshot <path>' before snapshot operations.

When it happens

Trigger: A snapshot operation targets a directory that is not snapshottable.

Common situations: Creating or deleting snapshots on a directory where allowSnapshot was not run.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/38f93317e6b18f95. Report an issue: GitHub.