Andy Grove

### What is the problem the feature request solves? Currently, CometFuzz only passes columns to functions. For functions such `date_truc`, it is more typical for users to pass a scalar...

[CometFuzz] Automate keeping function signatures up-to-date with Spark

1

### What is the problem the feature request solves? In https://github.com/apache/datafusion-comet/pull/2614 the function signatures were improved so that they specify which data types are accepted, rather than just specifying the...

### What is the problem the feature request solves? Calling rpad or array_repeat with a very large len/count argument results in OOM and is not a realistic use case. It...

[CometFuzz] Show summary of test coverage

1

### What is the problem the feature request solves? We currently have no visibility into which expressions were successfully tested after running generated queries. It is possible that all queries...

### What is the problem the feature request solves? The configuration settings have many inconsistencies. For example, we have many different prefixes for shuffle-related configs: - `spark.comet.columnar.shuffle` - `spark.comet.exec.shuffle` -...

### What is the problem the feature request solves? One of the major limitations of Comet today is that there is no spilling support for hash joins. We have to...

**Is your feature request related to a problem? Please describe.** We currently only push down `IS NOT NULL` filters to table scan: ```rust fn is_supported_push_down_expr(expr: &Expr) -> bool { match...

[FEA] [Databricks 12.2] Support GpuMergeIntoCommand notMatchedBySourceClauses on GPU

2

**Is your feature request related to a problem? Please describe.** PR https://github.com/NVIDIA/spark-rapids/pull/8282 adds basic support for Databricks 12.2 but did not add support for `notMatchedBySourceClauses` in `GpuMergeIntoCommand` and instead falls...