support DELETE in TableV2

[TennyZhuang]

No description provided.

[BugenZhao]

Table V2 is currently ready for batch query. Considering there're a lot of blockers now, if the purpose is to test record deletion in streaming e2e tests, maybe the best quickest way is still to implement delete for Bummock table.😢

[TennyZhuang]

Table V2 is currently ready for batch query. Considering there're a lot of blockers now, if the purpose is to test record deletion in streaming e2e tests, maybe the best quickest way is still to implement delete for Bummock table.😢

1. Implement deletion on Bummock table is non-trivial.
2. Eventually, we should implement deletion on TableV2.

If it's not ready, when is the correct time to implement it?

In my opinion, there is no blockers to add the DeleteExecutor.

[BugenZhao]

MV on MV (Table V2) is temporally unavailable since we're migrating barrier manager to meta service these days. It's certainly okay to implement DeleteExecutor now, but one can't test it on materialized view until the MV on MV becomes available.