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Posted to github@datafusion.apache.org by "YutaLin (via GitHub)" <gi...@apache.org> on 2026/05/22 01:28:15 UTC
[I] Implement TimeType support: Infrastructure - shuffle [datafusion-comet]
YutaLin opened a new issue, #4396:
URL: https://github.com/apache/datafusion-comet/issues/4396
### What is the problem the feature request solves?
This is https://github.com/apache/datafusion-comet/issues/4288 sub-issue
These are the core infrastructure pieces that make TimeType columns usable in
real-world queries. Without them, any query that shuffles, sorts, or aggregates
a time column falls back to Spark.
Since TimeType is physically a fixed-width i64 (same as LongType/TimestampType),
all of these should be straightforward additions to existing type lists.
### Describe the potential solution
**1a. Shuffle (native)**
File: spark/.../CometShuffleExchangeExec.scala:367-380
supportedSerializableDataType does not include TimeType. Add it alongside
the existing TimestampType | TimestampNTZType case.
Also need to check the Rust shuffle path:
native/shuffle/src/spark_unsafe/row.rs - needs Time64 handling
**1b. Shuffle (JVM columnar)**
File: spark/.../CometShuffleExchangeExec.scala:490-506
Same supportedSerializableDataType function (different scope). Add TimeType.
### Additional context
_No response_
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Re: [I] Implement TimeType support: Infrastructure - shuffle [datafusion-comet]
Posted by "parthchandra (via GitHub)" <gi...@apache.org>.
parthchandra commented on issue #4396:
URL: https://github.com/apache/datafusion-comet/issues/4396#issuecomment-4522941094
@YutaLin assigned to you.
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Re: [I] Implement TimeType support: Infrastructure - shuffle [datafusion-comet]
Posted by "parthchandra (via GitHub)" <gi...@apache.org>.
parthchandra closed issue #4396: Implement TimeType support: Infrastructure - shuffle
URL: https://github.com/apache/datafusion-comet/issues/4396
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