fix: implement bulk write for time partitions and bulk memtable (#7293)

* feat: implement convert_bulk_part

Signed-off-by: evenyag <realevenyag@gmail.com>

* chore: convert bulk part in TimePartitions

Signed-off-by: evenyag <realevenyag@gmail.com>

* feat: fill missing columns for bulk parts

Signed-off-by: evenyag <realevenyag@gmail.com>

* chore: update comments

Signed-off-by: evenyag <realevenyag@gmail.com>

* feat: cast to dictionary type

Signed-off-by: evenyag <realevenyag@gmail.com>

* test: add unit tests

Signed-off-by: evenyag <realevenyag@gmail.com>

* chore: update comment

Signed-off-by: evenyag <realevenyag@gmail.com>

* fix: do not convert part if bulk is written by write()

Signed-off-by: evenyag <realevenyag@gmail.com>

---------

Signed-off-by: evenyag <realevenyag@gmail.com>

src/operator/src/bulk_insert.rs

@@ -66,6 +66,7 @@ impl Inserter {
             return Ok(0);
         }
 
+        // TODO(yingwen): Fill record batch impure default values.
         // notify flownode to update dirty timestamps if flow is configured.
         self.maybe_update_flow_dirty_window(table_info.clone(), record_batch.clone());
 

src/operator/src/req_convert/insert/fill_impure_default.rs

@@ -36,6 +36,7 @@ pub fn find_all_impure_columns(table_info: &TableInfo) -> Vec<ColumnSchema> {
         .collect()
 }
 
+// TODO(yingwen): Support Bulk insert request.
 /// Fill impure default values in the request
 pub struct ImpureDefaultFiller {
     impure_columns: HashMap<String, (api::v1::ColumnSchema, api::v1::Value)>,