[
[KYUUBI #6984] Fix ValueError when rendering MapType data
](https://github.com/apache/kyuubi/issues/6984)
### Why are the changes needed?
The issue was caused by an incorrect iteration of MapType data in the `%table` magic command. When iterating over a `MapType` column, the code used `for k, v in m` directly, which leads to a `ValueError` because raw `Map` entries may not be properly unpacked
### How was this patch tested?
- [x] Manual testing:
Executed a query with a `MapType` column and confirmed that the `%table` command now renders it without errors.
```python
from pyspark.sql import SparkSession
from pyspark.sql.types import MapType, StringType, IntegerType
spark = SparkSession.builder \
.appName("MapFieldExample") \
.getOrCreate()
data = [
(1, {"a": "1", "b": "2"}),
(2, {"x": "10"}),
(3, {"key": "value"})
]
schema = "id INT, map_col MAP<STRING, STRING>"
df = spark.createDataFrame(data, schema=schema)
df.printSchema()
df2=df.collect()
```
using `%table` render table
```python
%table df2
```
result
```python
{'application/vnd.livy.table.v1+json': {'headers': [{'name': 'id', 'type': 'INT_TYPE'}, {'name': 'map_col', 'type': 'MAP_TYPE'}], 'data': [[1, {'a': '1', 'b': '2'}], [2, {'x': '10'}], [3, {'key': 'value'}]]}}
```
### Was this patch authored or co-authored using generative AI tooling?
No
**notice** This PR was co-authored by DeepSeek-R1.
Closes#6985 from JustFeng/patch-1.
Closes#6984
e0911ba94 [Reese Feng] Update PySparkTests for magic cmd
bc3ce1a49 [Reese Feng] Update PySparkTests for magic cmd
200d7ad9b [Reese Feng] Fix syntax error in dict iteration in magic_table_convert_map
Authored-by: Reese Feng <10377945+JustFeng@users.noreply.github.com>
Signed-off-by: Wang, Fei <fwang12@ebay.com>
a54ee39ab3