Hacktoberfest 2026: the issues maintainers tagged for October, open and beginner-friendly. Browse Hacktoberfest issues

Support extended precision for nanosecond timestamps

Closed
#3,679 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
42/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Quiet
Tech stack
java
Domain
data-engineering

Research direction

Start by reading parquet-format issue 600 and the linked proposal document to understand the extended-precision timestamp representation. Then inspect the Java implementation of TimestampType and related core tests; done means TimestampType can annotate FIXED_LEN_BYTE_ARRAY with type_length = 12, with coverage for the new behavior.

Written by the indexing model from the issue text.

Description

Type: enhancement
Describe the enhancement requested

Implement the proposal in https://github.com/apache/parquet-format/issues/600 and the linked proposal document to allow the TimestampType logical type to annotate FIXED_LEN_BYTE_ARRAY physical type with type_length = 12.

Component(s)

Core

Dominant language
Java
Stars
3.1k
Forks
1.6k
Avg merge
6d 16h
Merged PRs (30d)
36

Contributor guide

No contributing guide indexed for this repository

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

More from apache/parquet-java

All issues in apache/parquet-java

Similar issues

More Java issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.