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Convert Average to UDAF #10942 #10964

Merged
merged 22 commits into from
Jun 23, 2024
Merged

Convert Average to UDAF #10942 #10964

merged 22 commits into from
Jun 23, 2024

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dharanad
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Which issue does this PR close?

Closes #10942

Rationale for this change

Part of #8708

What changes are included in this PR?

Are these changes tested?

cargo build
cargo test
cargo test --test sqllogictests

Are there any user-facing changes?

@github-actions github-actions bot added logical-expr Logical plan and expressions physical-expr Physical Expressions core Core DataFusion crate labels Jun 17, 2024
@github-actions github-actions bot added the optimizer Optimizer rules label Jun 17, 2024
@github-actions github-actions bot added the sql SQL Planner label Jun 20, 2024
@github-actions github-actions bot added the sqllogictest SQL Logic Tests (.slt) label Jun 20, 2024
@dharanad
Merge branch 'refs/heads/main' into avg-to-udaf
b74f029 
# Conflicts:
#	datafusion/expr/src/aggregate_function.rs
#	datafusion/expr/src/type_coercion/aggregates.rs
#	datafusion/functions-aggregate/src/lib.rs
#	datafusion/optimizer/src/common_subexpr_eliminate.rs
#	datafusion/physical-expr/src/aggregate/build_in.rs
#	datafusion/physical-expr/src/aggregate/mod.rs
#	datafusion/physical-expr/src/expressions/mod.rs
#	datafusion/proto/src/logical_plan/from_proto.rs
#	datafusion/proto/src/logical_plan/to_proto.rs
#	datafusion/proto/src/physical_plan/to_proto.rs
#	datafusion/proto/tests/cases/roundtrip_physical_plan.rs
#	datafusion/sqllogictest/test_files/window.slt
@dharanad
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hello @jayzhan211 / @alamb
The following two test cases are failing

  • aggregates::tests::test_drop_cancel_with_groups
  • aggregates::tests::test_drop_cancel_without_groups

I'm encountering difficulties with understanding these tests cases. Their purpose and the specific behavior they target aren't entirely clear to me. Can you please provide some insights into these test cases? Specifically, it would be helpful to understand:

  • The context surrounding the addition of these tests.
  • The intended behavior they are designed to verify.

Your help would be greatly appreciated.

@jayzhan211
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  • test_drop_cancel_with_groups

I think you can try create_aggregate_expr in datafusion/physical-expr-common/src/aggregate/mod.rs to create avg expression

@dharanad
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  • test_drop_cancel_with_groups

I think you can try create_aggregate_expr in datafusion/physical-expr-common/src/aggregate/mod.rs to create avg expression

I am using the same to create avg expression. But it is still failing

@jayzhan211
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  • test_drop_cancel_with_groups

I think you can try create_aggregate_expr in datafusion/physical-expr-common/src/aggregate/mod.rs to create avg expression

I am using the same to create avg expression. But it is still failing

The error here is because f32 is not coerced to f64, since the coercion occurs in logical optimization step. I think we can just change the type to f64 for test, since the test does not care about the things happen before getting Physical expression

@dharanad
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  • test_drop_cancel_with_groups

I think you can try create_aggregate_expr in datafusion/physical-expr-common/src/aggregate/mod.rs to create avg expression

I am using the same to create avg expression. But it is still failing

The error here is because f32 is not coerced to f64, since the coercion occurs in logical optimization step. I think we can just change the type to f64 for test, since the test does not care about the things happen before getting Physical expression

I really appreciate you taking the time to help me with this. Using the debugger did the trick, and your insights help me understand the actual reason.

@dharanad dharanad marked this pull request as ready for review June 21, 2024 09:37
@dharanad
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@jayzhan211 can you please help me with a review

alamb
alamb previously approved these changes Jun 21, 2024
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An epic PR @dharanad -- very nice. Thank you for this contribution and for the help / review @jayzhan211

datafusion-examples/examples/simplify_udaf_expression.rs Show resolved Hide resolved
datafusion/expr/src/type_coercion/aggregates.rs Show resolved Hide resolved
datafusion/functions-aggregate/src/average.rs Show resolved Hide resolved
@alamb alamb mentioned this pull request Jun 21, 2024
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@alamb alamb dismissed their stale review June 22, 2024 12:03

Let's address jayzhan211's comments first

@dharanad
addressing PR comments
ca2fcab
@dharanad
Merge branch 'refs/heads/main' into avg-to-udaf
979dc3a 
# Conflicts:
#	datafusion/core/src/dataframe/mod.rs
#	datafusion/sqllogictest/test_files/optimizer_group_by_constant.slt
#	datafusion/sqllogictest/test_files/predicates.slt
#	datafusion/sqllogictest/test_files/tpch/q1.slt.part
#	datafusion/sqllogictest/test_files/window.slt
#	datafusion/substrait/tests/cases/consumer_integration.rs
@dharanad
add ut for logical avg window
6e68745
@dharanad
fix physical plan roundtrip_window test case
f1923e5
@dharanad dharanad requested a review from jayzhan211 June 23, 2024 04:50
jayzhan211
jayzhan211 approved these changes Jun 23, 2024
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👍

@dharanad
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👍

Thank You @jayzhan211 for your time and guidance.

@dharanad dharanad requested a review from alamb June 23, 2024 07:39
alamb
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Thank you @dharanad and @jayzhan211

@alamb alamb merged commit fdd1e3d into apache:main Jun 23, 2024
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@alamb alamb added the api change Changes the API exposed to users of the crate label Jul 9, 2024
findepi pushed a commit to findepi/datafusion that referenced this pull request Jul 16, 2024
@dharanad @findepi
Convert Average to UDAF apache#10942 (apache#10964)
39fbd8e 
* add avg udaf

* remove avg from expr

* add test stub

* migrate avg udaf

* change avg udaf signature
remove avg phy expr

* fix tests

* fix state_fields fn

* fix ut in phy-plan aggr

* refactor Average to Avg

* refactor Average to Avg

* fix type coercion tests

* fix example and logic tests

* fix py expr failing ut

* update docs

* fix failing tests

* formatting examples

* remove duplicate code and fix uts

* addressing PR comments

* add ut for logical avg window

* fix physical plan roundtrip_window test case
Michael-J-Ward added a commit to Michael-J-Ward/datafusion-python that referenced this pull request Jul 24, 2024
@Michael-J-Ward
migrate avg to UDAF
6509d6d 
Ref: apache/datafusion#10964
Michael-J-Ward added a commit to Michael-J-Ward/datafusion-python that referenced this pull request Jul 24, 2024
@Michael-J-Ward
migrate avg to UDAF
2cd6853 
Ref: apache/datafusion#10964
Michael-J-Ward added a commit to Michael-J-Ward/datafusion-python that referenced this pull request Jul 25, 2024
@Michael-J-Ward
migrate avg to UDAF
3a277a8 
Ref: apache/datafusion#10964
andygrove pushed a commit to apache/datafusion-python that referenced this pull request Jul 31, 2024
@Michael-J-Ward
Upgrade Datafusion 40 (#771)
f580155 
* chore: update datafusion deps

* feat: impl ExecutionPlan::static_name() for DatasetExec

This required trait method was added upstream [0] and recommends to simply forward to `static_name`.

[0]: apache/datafusion#10266

* feat: update first_value and last_value wrappers.

Upstream signatures were changed for the new new `AggregateBuilder` api [0].

This simply gets the code to work. We should better incorporate that API into `datafusion-python`.

[0] apache/datafusion#10560

* migrate count to UDAF

Builtin Count was removed upstream.

TBD whether we want to re-implement `count_star` with new API.

Ref: apache/datafusion#10893

* migrate approx_percentile_cont, approx_distinct, and approx_median to UDAF

Ref: approx_distinct apache/datafusion#10851
Ref: approx_median apache/datafusion#10840
Ref: approx_percentile_cont and _with_weight apache/datafusion#10917

* migrate avg to UDAF

Ref: apache/datafusion#10964

* migrage corr to UDAF

Ref: apache/datafusion#10884

* migrate grouping to UDAF

Ref: apache/datafusion#10906

* add alias `mean` for UDAF `avg`

* migrate stddev to UDAF

Ref: apache/datafusion#10827

* remove rust alias for stddev

The python wrapper now provides stddev_samp alias.

* migrage var_pop to UDAF

Ref: apache/datafusion#10836

* migrate regr_* functions to UDAF

Ref: apache/datafusion#10898

* migrate bitwise functions to UDAF

The functions now take a single expression instead of a Vec<_>.

Ref: apache/datafusion#10930

* add missing variants for ScalarValue with todo

* fix typo in approx_percentile_cont

* add distinct arg to count

* comment out failing test

`approx_percentile_cont` is now returning a DoubleArray instead of an IntArray.

This may be a bug upstream; it requires further investigation.

* update tests to expect lowercase `sum` in query plans

This was changed upstream.

Ref: apache/datafusion#10831

* update ScalarType data_type map

* add docs dependency pickleshare

* re-implement count_star

* lint: ruff python lint

* lint: rust cargo fmt

* include name of window function in error for find_window_fn

* refactor `find_window_fn` for debug clarity

* search default aggregate functions by both name and aliases

The alias list no longer includes the name of the function.

Ref: apache/datafusion#10658

* fix markdown in find_window_fn docs

* parameterize test_window_functions

`first_value` and `last_value` are currently failing and marked as xfail.

* add test ids to test_simple_select tests marked xfail

* update find_window_fn to search built-ins first

The behavior of `first_value` and `last_value` UDAFs currently does not match the built-in behavior.
This allowed me to remove `marks=pytest.xfail` from the window tests.

* improve first_call and last_call use of the builder API

* remove trailing todos

* fix examples/substrait.py

* chore: remove explicit aliases from functions.rs

Ref: #779

* remove `array_fn!` aliases

* remove alias rules for `expr_fn_vec!`

* remove alias rules from `expr_fn!` macro

* remove unnecessary pyo3 var-arg signatures in functions.rs

* remove pyo3 signatures that provided defaults for first_value and last_value

* parametrize test_string_functions

* test regr_ function wrappers

Closes #778
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@alamb alamb alamb approved these changes

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api change Changes the API exposed to users of the crate core Core DataFusion crate logical-expr Logical plan and expressions optimizer Optimizer rules physical-expr Physical Expressions sql SQL Planner sqllogictest SQL Logic Tests (.slt) substrait
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Convert Average to UDAF
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@dharanad @jayzhan211 @alamb