mockup of collation aware hash function #2
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latest review added checkinputdatatype to not support complex types containing nonbinary collations added checkinputdatatype to not support complex types containing nonbinary collations added struct test stuff Tests pass test structs fix scalastyle Collation Support for Mode
…essions/aggregate/Mode.scala Co-authored-by: Uros Bojanic <[email protected]>
h mockup added new bms
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… throw internal error
### What changes were proposed in this pull request?
This PR fixes the error messages and classes when Python UDFs are used in higher order functions.
### Why are the changes needed?
To show the proper user-facing exceptions with error classes.
### Does this PR introduce _any_ user-facing change?
Yes, previously it threw internal error such as:
```python
from pyspark.sql.functions import transform, udf, col, array
spark.range(1).select(transform(array("id"), lambda x: udf(lambda y: y)(x))).collect()
```
Before:
```
py4j.protocol.Py4JJavaError: An error occurred while calling o74.collectToPython.
: org.apache.spark.SparkException: Job aborted due to stage failure: Task 15 in stage 0.0 failed 1 times, most recent failure: Lost task 15.0 in stage 0.0 (TID 15) (ip-192-168-123-103.ap-northeast-2.compute.internal executor driver): org.apache.spark.SparkException: [INTERNAL_ERROR] Cannot evaluate expression: <lambda>(lambda x_0#3L)#2 SQLSTATE: XX000
at org.apache.spark.SparkException$.internalError(SparkException.scala:92)
at org.apache.spark.SparkException$.internalError(SparkException.scala:96)
```
After:
```
pyspark.errors.exceptions.captured.AnalysisException: [INVALID_LAMBDA_FUNCTION_CALL.UNEVALUABLE] Invalid lambda function call. Python UDFs should be used in a lambda function at a higher order function. However, "<lambda>(lambda x_0#3L)" was a Python UDF. SQLSTATE: 42K0D;
Project [transform(array(id#0L), lambdafunction(<lambda>(lambda x_0#3L)#2, lambda x_0#3L, false)) AS transform(array(id), lambdafunction(<lambda>(lambda x_0#3L), namedlambdavariable()))apache#4]
+- Range (0, 1, step=1, splits=Some(16))
```
### How was this patch tested?
Unittest was added
### Was this patch authored or co-authored using generative AI tooling?
No.
Closes apache#47079 from HyukjinKwon/SPARK-48706.
Authored-by: Hyukjin Kwon <[email protected]>
Signed-off-by: Kent Yao <[email protected]>
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A proof of concept that we can modify OpenHashSet's hashing function to be a collation-aware hashing function.