apache / apache/parquet-java

Push predicates into the whole read path

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#1,464 2 comments 0 reactions 0 assignees View on GitHub
Component: Java Component: Parquet Priority: Major Type: enhancement
Dominant language
Java
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Description

Regarding primitive types, there are 3 import primitive types set:
- the file schema primitive type set
- the requested schema primitive type set
- the predicates primitive type set

Currently the file schema primitive type set and the requested schema primitive type set has been pushed into the whole read path, but not the the predicates primitive type set.

This brings some problems like:
- PARQUET-389, SPARK-11103, SPARK-11434
- PARQUET-425, PARQUET-426
- PARQUET-295

This issue propose to push the predicates primitive type set into the whole read path as well. When this is resolved, hopefully the issues listed above would also be resolved as well.

Attached is a change proposal.

**Reporter**: [Liwei Lin(Inactive)](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=proflin) / @lw-lin
**Assignee**: [Liwei Lin(Inactive)](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=proflin) / @lw-lin
#### Original Issue Attachments:
- [Parquet-427 v0.1.pdf](https://issues.apache.org/jira/secure/attachment/12782011/Parquet-427+v0.1.pdf)

**Note**: *This issue was originally created as [PARQUET-427](https://issues.apache.org/jira/browse/PARQUET-427). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*

Contributor guide

No contributing guide indexed for this repository

Research direction

Start with the attached Parquet-427 v0.1 change proposal and trace how the file-schema and requested-schema primitive type sets already move through the read path. Done means the predicates primitive type set follows that path too, with the related PARQUET-389, SPARK-11103, SPARK-11434, PARQUET-425, PARQUET-426, and PARQUET-295 problems addressed.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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