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by Kwpolska 849 days ago
What’s the difference between terminators and separators here? The ndjson spec [0] doesn’t say anything like that, and it seems that ndjson and jsonlines are identical in what documents they accept.

[0]: https://github.com/ndjson/ndjson-spec
2 comments
yencabulator 847 days ago
A separator separates two records, where as a terminator terminates a record.

You can detect and error out if you see an unterminated record at end of transmission. With separators, the producer might not put a separator after the last record, because there's nothing to separate it from there.

There's no justification for not using terminators, it's just a bad spec. Unsurprising story: the variant with better marketing has less technical chops.

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nasso_dev 849 days ago
im guessing: all values must always end with a terminator, but a separator doesn't need to be present after the last value

i.e. a documemt without a newline at the end is valid jsonl, but invalid ndjson

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