[jira] [Created] (SPARK-30244) Emit pre/post events for "Partition" methods in ExternalCatalogWithListener

["Jackson Westeen (Jira)" <ji...@apache.org>]

Jackson Westeen created SPARK-30244:
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             Summary: Emit pre/post events for "Partition" methods in ExternalCatalogWithListener
                 Key: SPARK-30244
                 URL: https://issues.apache.org/jira/browse/SPARK-30244
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.4.4
            Reporter: Jackson Westeen


Many of the methods in `ExternalCatalogWithListener` support emitting pre/post events to the ListenerBus when delegating calls to the underlying ExternalCatalog implementation. 

Is there a reason the "Partition" series of methods don't support this feature?

[https://github.com/apache/spark/blob/v2.4.4/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalogWithListener.scala#L193]

We're looking to hook into post "ALTER TABLE ADD PARTITION" calls, so we can publish a message to Kafka for example, whenever new partitions are added to the metastore.

It appears there's already event hooks for createDatabase / createTable.. but not createPartition. Would you consider adding hooks here? Or is there a better way to hook into to successful "ALTER TABLE ADD PARTITION" calls and subscribe to changes in partition status?

Thank you!



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