apache / apache/parquet-java

FilteringPrimitiveConverter should support dictionaries

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Component: Java Component: Parquet Priority: Minor Type: enhancement
Dominant language
Java
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Description

If the delegated PrimitiveConverter supports dictionaries, then FilteringPrimitiveConverter should too.

**Reporter**: [Alex Levenson](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=alexlevenson) / @isnotinvain

**Note**: *This issue was originally created as [PARQUET-36](https://issues.apache.org/jira/browse/PARQUET-36). 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

Locate FilteringPrimitiveConverter and the delegated PrimitiveConverter it wraps, then inspect how dictionary support is handled. Confirm the converter supports dictionaries whenever its delegate does, and verify the behavior with the relevant existing converter tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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