aglinxinyuan opened a new pull request, #4784:
URL: https://github.com/apache/texera/pull/4784

   ### What changes were proposed in this PR?
   
   Add `DataPayloadSpec` covering the custom `equals` and `inMemSize` of 
`DataFrame`:
   
   - `inMemSize`: zero for an empty frame; sum of contained tuple sizes 
otherwise
   - `equals` reflexivity for empty frames
   - `equals` rejecting non-DataFrame values and `null`
   - `equals` rejecting different lengths
   - `equals` treating element-wise equal frames as equal
   - `equals` respecting element order
   - `equals` rejecting differing elements
   
   ### Any related issues, documentation, discussions?
   
   Closes #4783
   
   ### How was this PR tested?
   
   `sbt "WorkflowExecutionService/testOnly 
org.apache.texera.amber.engine.common.ambermessage.DataPayloadSpec"` — 8/8 
tests pass.
   
   ### Was this PR authored or co-authored using generative AI tooling?
   
   Generated-by: Claude Code (Claude Opus 4.7)


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