[SUPPOCaused by: java.lang.ClassCastException: class org.apache.spark.sql.types.StructType cannot be cast to class org.apache.spark.sql.types.MapType RT]
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Description
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**Describe the problem you faced**
Caused by: java.lang.ClassCastException: class org.apache.spark.sql.types.StructType cannot be cast to class org.apache.spark.sql.types.MapType
A clear and concise description of the problem.
**To Reproduce**
Steps to reproduce the behavior:
gcloud dataproc clusters create m0s0d56-test-2 \
--region us-central1 \
--project gcp-project-name \
--master-machine-type e2-standard-8 \
--num-workers 0 \
--worker-machine-type e2-standard-8 \
--no-address \
--max-idle 1800 \
--scopes cloud-platform \
--image 2.1.18-debian11 \
--properties spark:spark.jars.packages=org.apache.hudi:hudi-spark3.3-bundle_2.12:0.14.0 \
spark-shell --conf 'spark.serializer=org.apache.spark.serializer.KryoSerializer' --conf 'spark.sql.extensions=org.apache.spark.sql.hudi.HoodieSparkSessionExtension'
import org.apache.spark.sql.types._
import org.apache.spark.sql._
val schema = StructType(Seq(
| | StructField("payload", MapType(StringType,
| | StructType(Seq(
| | StructField("member0", StringType, true),
| | StructField("member1", MapType(StringType,
| | StructType(Seq(
| | StructField("member0", StringType, true),
| | StructField("member1", MapType(StringType, StringType, true), true)
| | )), true), true),
| | StructField("member2", ArrayType(MapType(StringType, StringType, true), true), true)
| | )), true), true)
| | ))
val data = Seq(Row(Map("key1" -> Row("value0", Map("subkey1" -> Row("subvalue0", Map("subsubkey1" -> "subsubvalue1"))), Array(Map("arraykey1" -> "arrayvalue1"))))))
val testDF = spark.createDataFrame(spark.sparkContext.parallelize(data), schema)
testDF.write.format("hudi").mode("overwrite").option("hoodie.table.name","hudi_test_poc").save("gs://test-bucket/notification_1")
**Expected behavior**
A clear and concise description of what you expected to happen.
**Environment Description**
* Hudi version : hudi-spark3.3-bundle_2.12:0.14.0
* Spark version : 3.3.2/3.1.3 same issue on both spark version
* Hive version :
* Hadoop version :
* Storage (HDFS/S3/GCS..) :
* Running on Docker? (yes/no) :
**Additional context**
Add any other context about the problem here.
**Stacktrace**
```Add the stacktrace of the error.```
Contributor guide
No contributing guide indexed for this repository
Research direction
Start by reproducing the nested MapType and StructType write with Hudi 0.14.0 on Spark 3.3.2 or 3.1.3 using the supplied Dataproc and spark-shell commands. No source file or test is named; investigate the resulting ClassCastException and consider the issue resolved when the shown DataFrame writes successfully without that exception.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- gcp, java, scala, spark
- Domain
- cloud, data-engineering, distributed-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100