Why create/drop/alter/rename partition does not post listener event in ExternalCatalogWithListener?

[李响]

Dear Spark Community:

In ExternalCatalogWithListener
<https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/ExternalCatalogWithListener.scala>,
I see postToAll() is called for create/drop/alter/rename
database/table/function to post DatabaseEvent/TableEvent/FunctionEvent
<https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/events.scala>
to
all registered listeners.

But I do not see any event posted when doing so toward "partition".

Is there any deliberate reason why Spark is not doing so? How about posting
TableEvent (already have) or PartitionEvent (a new sub-trait of TableEvent)?


-- 

                                               李响 Xiang Li

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