parquet-format

Apache Parquet Format

Data & Databases

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6Distinct people

6Mentions

0Explicit recommenders

2.7KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

Apache Parquet Format

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 1:57:11 AM UTC.

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Mentions over time

HN mentions by year6 dated mentions

Observed mentions: 2023-04-04 05:27:48 UTC to 2026-06-15 18:29:11 UTC.

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	2	2
2024	2024-01-01 00:00:00 UTC	2025-01-01 00:00:00 UTC	1	1
2025	2025-01-01 00:00:00 UTC	2026-01-01 00:00:00 UTC	1	1
2026 (partial)	2026-01-01 00:00:00 UTC	2027-01-01 00:00:00 UTC	2	2

What Hacker News says

2 sources

choppaface·Nov 17, 2023

Right, there's all sorts of metadata and often stats included in any parquet file: https://github.com/apache/parquet-format#file-format The offsets of said metadata are well-defined (i.e. in the footer) so for S3 / blob storage so long as you can efficiently request a range of bytes you can pull the metadata without having to read all the data.

In Summing columns in remote Parquet files using DuckDB

markhuggins·Apr 4, 2023

Date is confusing with a timezone (UTC or otherwise) and the doco makes no such suggestion. The Parquet datatypes documentation is pretty clear that there is a flag isAdjustedToUTC to define if the timestamp should be interpreted as having Instant semantics or Local semantics. https://github.com/apache/parquet-format/blob/master/Logical... Still no option to include a TZ offset in the data (so the same datum can be interpreted with both Local and Instant semantics) but not bad really.

In Parquet: An efficient, binary file format for table data