* 时间复杂度: O(nlogn) 空间复杂度: O(1) 稳定: ✗
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The second, more thorough option is to stop using CSV altogether and switch to Parquet. Parquet is columnar and schema-aware. There's no delimiter character, so embedded commas, newlines, quotes — all of it just works. Redshift's COPY command supports Parquet natively and actually performs better loading it than CSV.
Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.