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Fix Parquet streaming hangs at the end of script

Fix Parquet streaming hangs at the end of script: a task in repo2rlenv-v083-pr diff (Harbor dataset). Title: Fix Parquet streaming hangs at the end of script

The task

**Title:** Fix Parquet streaming hangs at the end of script

Part of AdithyaSK/repo2rlenv-v083-pr_diff.