ayushi-agarwal commented on PR #8320:
URL:
https://github.com/apache/incubator-gluten/pull/8320#issuecomment-2572966401
val jsonData = Seq(
"""{"platformId": "IPHONE", "userId": "123", "sessionId": "abc"}""",
"""{"platformId": "ANDROID", "userId": "456", "sessionId": "def"}""",
"""{"platformId": "IPHONE", "userId": "789", "sessionId": "ghi"}"""
)
val df =
spark.createDataFrame(jsonData.map(Tuple1(_))).toDF("json_column")
df.printSchema()
df.write.mode("overwrite").parquet("output/json_parquet_data")
val parquetDF = spark.read.parquet("output/json_parquet_data")
val r2 = parquetDF.collect()
r2.foreach(println)
val schema = new StructType().add("platformId",
StringType).add("userId", StringType).add("sessionId", StringType)
val filteredDF = parquetDF.withColumn("parsed_json",
from_json(col("json_column"), schema)).select("parsed_json")
val result = filteredDF.collect()
This prints null result when offloaded.
@zhli1142015 Are structs not supported? Shall we add a check to not offload
for struct types?
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