[fhan688]

Purpose

Linked issue: #3353

Currently, table.auto-partition.enabled cannot be altered after table creation, while related auto-partition options such as table.auto-partition.num-retention already support dynamic updates.

This PR supports altering table.auto-partition.enabled so users can enable or disable auto partitioning for an existing partitioned table without recreating the table.

Brief change log

• Add table.auto-partition.enabled to alterable table options.
• Add value-based comparison for AutoPartitionStrategy so coordinator can detect full auto-partition strategy changes.
• Update coordinator table-change handling to react to auto-partition strategy changes, instead of only checking retention changes.
• Add AutoPartitionManager#handleAutoPartitionStrategyChange to handle:
  • disabled -> enabled: register the table and trigger immediate partition creation.
  • enabled -> disabled: remove the table from the auto-partition scheduler.
  • enabled -> enabled with strategy changes: refresh auto-partition table metadata.
• Skip stale scheduled auto-partition tasks when the table has already been removed from the scheduler.
• Add server and Flink SQL tests for altering table.auto-partition.enabled.

Tests

• AutoPartitionManagerTest#testUpdateAutoPartitionEnabled
• Flink120CatalogITCase#testAlterAutoPartitionEnabled
• Flink120CatalogITCase#testAlterAutoPartitionRetention
• Flink120CatalogITCase#testAlterTableConfig
• git diff --check
• spotless:apply

API and Format

No storage format or RPC format changes.

This changes user-visible table option behavior by making the existing table.auto-partition.enabled option alterable. No new Java public API is introduced.

Documentation

No new table option is introduced. This PR only makes the existing table.auto-partition.enabled option dynamically alterable.

[Copilot]

Pull request overview

This PR enables dynamic alteration of table.auto-partition.enabled for existing partitioned tables, updating coordinator/auto-partition scheduling behavior to correctly react to full auto-partition strategy changes.

Changes:

• Adds table.auto-partition.enabled to the set of alterable table options.
• Implements value-based equals/hashCode for AutoPartitionStrategy and updates coordinator handling to react to any strategy change (enable/disable/strategy refresh).
• Adds server-side and Flink SQL integration tests covering alter-enabled behavior and scheduler correctness.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
fluss-server/src/test/java/org/apache/fluss/server/coordinator/AutoPartitionManagerTest.java	Adds a unit test verifying disable→enable transitions stop/resume partition creation as expected.
fluss-server/src/main/java/org/apache/fluss/server/coordinator/CoordinatorEventProcessor.java	Detects full auto-partition strategy changes and delegates to the new strategy-change handler.
fluss-server/src/main/java/org/apache/fluss/server/coordinator/AutoPartitionManager.java	Introduces handleAutoPartitionStrategyChange and skips stale scheduled tasks for removed tables.
fluss-flink/fluss-flink-common/src/test/java/org/apache/fluss/flink/catalog/FlinkCatalogITCase.java	Adds IT coverage for altering table.auto-partition.enabled and updates unsupported-alter expectations.
fluss-common/src/main/java/org/apache/fluss/utils/AutoPartitionStrategy.java	Adds equals/hashCode/toString to enable value-based change detection and clearer logging.
fluss-common/src/main/java/org/apache/fluss/config/FlussConfigUtils.java	Marks table.auto-partition.enabled as an alterable table option.

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[fhan688]

please help review, thanks! @luoyuxia

[luoyuxia]

@fhan688 Thanks. LGTM.