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Support CSV files with more than 512 columns #3825

@Ma77Ball

Description

@Ma77Ball

Summary

When parsing wide CSV files (e.g., 1000+ columns), Univocity throws an ArrayIndexOutOfBoundsException due to a hard limit of 512 columns. This prevents the ingestion of valid datasets with more columns.

How to Reproduce

  1. Create a CSV file with >512 columns (e.g., 1000 columns × 100 rows).
  2. Run the workflow using the CSV Scan Operator.
  3. Observe the error in the result panel (shown below)
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