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## What changes were proposed in this pull request? Currently we use Arrow File format to communicate with Python worker when invoking vectorized UDF but we can use Arrow Stream format. This pr replaces the Arrow File format with the Arrow Stream format. ## How was this patch tested? Existing tests. Author: Takuya UESHIN <ueshin@databricks.com> Closes #19349 from ueshin/issues/SPARK-22125. |
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