andygrove commented on PR #496:
URL: https://github.com/apache/datafusion-comet/pull/496#issuecomment-2140951878
The change in this PR worked fine with q14 but caused this failure with q1:
```
py4j.protocol.Py4JJavaError: An error occurred while calling
o200.collectToPython.
: org.apache.spark.SparkException: Job aborted due to stage failure: Task
161 in stage 8.0 failed 4 times, most recent failure: Lost task 161.3 in stage
8.0 (TID 195) (192.168.86.32 executor 0):
org.apache.comet.CometNativeException: General execution error with reason
org.apache.comet.CometNativeException: called `Option::unwrap()` on a `None`
value
at comet::errors::init::{{closure}}(__internal__:0)
at std::panicking::rust_panic_with_hook(__internal__:0)
at std::panicking::begin_panic_handler::{{closure}}(__internal__:0)
at
std::sys_common::backtrace::__rust_end_short_backtrace(__internal__:0)
at rust_begin_unwind(__internal__:0)
at core::panicking::panic_fmt(__internal__:0)
at core::panicking::panic(__internal__:0)
at arrow_row::row_lengths(__internal__:0)
at arrow_row::RowConverter::append(__internal__:0)
at arrow_row::RowConverter::convert_columns(__internal__:0)
at
core::iter::adapters::map::map_try_fold::{{closure}}(__internal__:0)
at arrow_row::RowConverter::append(__internal__:0)
at arrow_row::RowConverter::convert_columns(__internal__:0)
at
<datafusion_physical_plan::aggregates::group_values::row::GroupValuesRows as
datafusion_physical_plan::aggregates::group_values::GroupValues>::intern(__internal__:0)
at
<datafusion_physical_plan::aggregates::row_hash::GroupedHashAggregateStream as
futures_core::stream::Stream>::poll_next(__internal__:0)
at
comet::execution::jni_api::Java_org_apache_comet_Native_executePlan::{{closure}}(__internal__:0)
```
I am surprised that having the projection produce larger batches would cause
something like this, but I am not yet familiar with the scala/rust interactions
about this, so there is probably something that I am not understanding.
@viirya @sunchao Can you help explain why my change is causing issues?
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