apache/hadoop · error · UnsupportedOperationException

{} doesn't support unsetStoragePolicy

Error message

{} doesn't support unsetStoragePolicy

What it means

Error "{} doesn't support unsetStoragePolicy" thrown in apache/hadoop.

Source

Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java:3399

   * @throws IOException IO failure
   * @throws UnsupportedOperationException if the operation is unsupported
   *         (default outcome).
   */
  public void setStoragePolicy(final Path src, final String policyName)
      throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
        + " doesn't support setStoragePolicy");
  }

  /**
   * Unset the storage policy set for a given file or directory.
   * @param src file or directory path.
   * @throws IOException IO failure
   * @throws UnsupportedOperationException if the operation is unsupported
   *         (default outcome).
   */
  public void unsetStoragePolicy(final Path src) throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
        + " doesn't support unsetStoragePolicy");
  }

  /**
   * Query the effective storage policy ID for the given file or directory.
   *
   * @param src file or directory path.
   * @return storage policy for give file.
   * @throws IOException IO failure
   * @throws UnsupportedOperationException if the operation is unsupported
   *         (default outcome).
   */
  public BlockStoragePolicySpi getStoragePolicy(final Path src)
      throws IOException {
    throw new UnsupportedOperationException(getClass().getSimpleName()
        + " doesn't support getStoragePolicy");
  }

View on GitHub (pinned to 2add963021)

Solutions

1. Call unsetStoragePolicy only against HDFS.
2. Confirm a storage policy was previously set on the path before unsetting.

When it happens

Trigger: Thrown at hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java:3399 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22). Data as JSON: /api/errors/1bc1a02e73f43cc7. Report an issue: GitHub.