datafusion

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Don't fetch and decode parquet metadata multiple times

1

_Draft as I'm not sure this is a good idea_ ## Which issue does this PR close? Closes #. ## Rationale for this change https://github.com/apache/arrow-datafusion/discussions/7737#discussioncomment-7186343 shows parquet metadata decoding showing...

tustvold

Transform benchmark json to line protocol

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## Which issue does this PR close? Closes #6107 ## What changes are included in this PR? - added a new `visualize` folder for attempting to visualize `history.lp` line protocol...

Smurphy000

Introduce `reverse_expr` for UDAF

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## Which issue does this PR close? Closes #. Part of #10091 ## Rationale for this change `reverse_expr` has a different meaning between returning clone and None. Together with reversing,...

jayzhan211

Stop copying LogicalPlan and Exprs in `RewriteDisjunctivePredicate`

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### Is your feature request related to a problem or challenge? As part of making the planner faster, we are updating the passes to avoid copying `LogicalPlan` and `Expr` (see...

alamb

[EPIC] Tasks for a new Top Level Apache Project

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### Is your feature request related to a problem or challenge? Update: the new project was approved by the board and we are now in the process of setting it...

alamb

In https://github.com/apache/datafusion/pull/10233 @tisonkun added a doap file 🙏 However, one of the fields is a "download" page which they mention doesn't quite map to Rust expectations / common DataFusion usage....

alamb

Error "entered unreachable code: NamedStructField should be rewritten in OperatorToFunction" after upgrade to 37

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NOTE -- Here is an example of how to make `Expr::NamedStructField` work in 37.1.0: https://github.com/apache/datafusion/pull/10183 ### Is your feature request related to a problem or challenge? In 37.0.0 many of...

alamb

Benchmark: Concurrent queries in constrainted environment

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### Is your feature request related to a problem or challenge? DataFusion currently has an extensive benchmark suite that looks roughly like this: - **fixed task set:** There is a...

crepererum

fix Sort Merge Join to pass TPCH tests

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I was trying to mark the Sort Merge Join as stable and run TPCH tests with SMJ enforced. Got the issue below, we need to fix before returning to discuss...

comphead

Array agg groups accumulator

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## Which issue does this PR close? Closes #10145. ## Rationale for this change See the issue. ## What changes are included in this PR? GroupsAccumulator for `array_agg` aggregation function...

lkt