comphead opened a new issue, #12528:
URL: https://github.com/apache/datafusion/issues/12528
This PR seems to introduce a performance regression due to the
similar reasons as it was in
https://github.com/apache/datafusion/pull/9830#issuecomment-2028430188 -- now
`apply_batch_filter` may be executed way more times. Query used for the
comparison:
```
EXPLAIN ANALYZE SELECT count(1) FROM nation n JOIN lineitem li ON
n.n_nationkey < li.l_orderkey
```
and for the single partition execution I've got the following results:
```
-- Before:
NestedLoopJoinExec: join_type=Inner, filter=n_nationkey@0 < l_orderkey@1,
metrics=[output_rows=150029850, build_input_rows=25, output_batches=733,
build_input_batches=1, input_batches=733, input_rows=6001215,
build_mem_used=296, join_time=1.257203344s, build_time=541.719µs]
-- After:
NestedLoopJoinExec: join_type=Inner, filter=n_nationkey@0 < l_orderkey@1,
metrics=[output_rows=150029850, build_input_batches=1, input_batches=733,
output_batches=733, input_rows=6001215, build_input_rows=25,
build_mem_used=296, build_time=488.521µs, join_time=9.563931093s]
```
(`join_time` metric shows the issue).
Any thoughts on it?
_Originally posted by @korowa in
https://github.com/apache/datafusion/issues/12504#issuecomment-2359064908_
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