Nga Tran

feat: add a config param to avoid grouping partitions

3

## Which issue does this PR close? Closes #https://github.com/apache/datafusion/issues/10257 ## Rationale for this change ## What changes are included in this PR? Add an option to avoid converting Union to...

Add an option to avoid grouping hash-partitioning

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### Is your feature request related to a problem or challenge? We have run into a an issue in IOx and described [here](https://github.com/influxdata/arrow-datafusion/pull/4) that the `Union` is converted to `Interleave`...

Incorrect statistics read for struct array in parquet

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### Describe the bug I found this while adding tests https://github.com/apache/datafusion/pull/10608. The statistics of struct array returns nothing ### To Reproduce See `test_struct` in https://github.com/apache/datafusion/pull/10608 ### Expected behavior Return some...

test: show stats in explain of two representative queries

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## Which issue does this PR close? Tests for https://github.com/apache/arrow-datafusion/issues/8155 ## Rationale for this change I have found that statistics were lost being propagated upward in the plan. These are...

Incorrect statistics read for unsigned integer columns in parquet

1

### Describe the bug I found this bug while adding tests for reading parquet statistics https://github.com/apache/datafusion/pull/10592/. Instead of getting corresponding UInt8Array, UInt16Array, UInt32Array for columns with u8, u16, u32 data...

### Describe the bug I found this while adding tests for reading parquet statistics https://github.com/apache/datafusion/pull/10592. Instead of getting back `BinaryArray`, we get `StringArray` ### To Reproduce See test `test_byte` in...

feat: Add `ProgressiveEval` operator

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## Which issue does this PR close? Closes https://github.com/apache/datafusion/issues/10488 ## Rationale for this change In InfluxDB IOx, when the inputs of `SortPreservingMerge` are all sorted on the sort key and...