apache/iceberg · error · UnsupportedOperationException

this.getClass().getName() + " does not implement computeTabl

Error message

this.getClass().getName() + " does not implement computeTableStats"

What it means

ActionsProvider.computeTableStats(Table) is a default method that throws UnsupportedOperationException naming the implementing class, because that action provider does not implement the compute-table-stats action. Providers implement a subset of actions; unimplemented methods throw this fail-fast error.

Source

Thrown at api/src/main/java/org/apache/iceberg/actions/ActionsProvider.java:76

    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement expireSnapshots");
  }

  /** Instantiates an action to delete all the files reachable from given metadata location. */
  default DeleteReachableFiles deleteReachableFiles(String metadataLocation) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement deleteReachableFiles");
  }

  /** Instantiates an action to rewrite position delete files */
  default RewritePositionDeleteFiles rewritePositionDeletes(Table table) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement rewritePositionDeletes");
  }

  /** Instantiates an action to compute table stats. */
  default ComputeTableStats computeTableStats(Table table) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement computeTableStats");
  }

  /** Instantiates an action to compute partition stats. */
  default ComputePartitionStats computePartitionStats(Table table) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement computePartitionStats");
  }

  /** Instantiates an action to rewrite all absolute paths in table metadata. */
  default RewriteTablePath rewriteTablePath(Table table) {
    throw new UnsupportedOperationException(
        this.getClass().getName() + " does not implement rewriteTablePath");
  }

  /** Instantiates an action to remove dangling delete files from current snapshot. */
  default RemoveDanglingDeleteFiles removeDanglingDeleteFiles(Table table) {
    throw new UnsupportedOperationException(

View on GitHub (pinned to 86d9c8fc54)

Solutions

Use a provider implementation that supports computeTableStats (e.g. SparkActions for Spark).
Implement computeTableStats(Table) in your custom ActionsProvider.
Skip stats computation or use another mechanism to collect table statistics.
Upgrade the integration/Iceberg version if support was added later.

Example fix

// before
MyProvider.get().computeTableStats(table).execute(); // throws

// after
SparkActions.get().computeTableStats(table).execute();

Defensive patterns

Strategy: try-catch

Validate before calling

// confirm provider support before calling; prefer canonical providers like SparkActions

Type guard

boolean supportsComputeTableStats = !(provider instanceof MinimalActionsProvider);

Try / catch

try {
  provider.computeTableStats(table).execute();
} catch (UnsupportedOperationException e) {
  SparkActions.get().computeTableStats(table).execute(); // capable provider
}

Prevention

Call computeTableStats via the engine-specific action registry.
Fully implement ActionsProvider methods in custom providers.
Gate stats-computation features on provider capability checks.

When it happens

Trigger: Calling provider.computeTableStats(table) on an ActionsProvider implementation that has not overridden it, e.g. a custom provider or an engine integration without statistics computation support.

Common situations: Computing table statistics (for query planners / stats files) via a catalog- or engine-specific provider that lacks the action; custom ActionsProvider subclasses that only implement some actions.

Related errors

AI-assisted analysis of apache/iceberg@86d9c8fc54 (2026-09-12). Data as JSON: /api/errors/8c47d20996c697be. Report an issue: GitHub.