apache / apache/parquet-java

[Vectorized Reader] Lazy Decoding in Vectorized Reader

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Component: Java Component: Parquet Priority: Major Type: task
Dominant language
Java
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Description

Do not decode data until required

**Reporter**: [Zhenxiao Luo](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=zhenxiao) / @zhenxiao

**Note**: *This issue was originally created as [PARQUET-302](https://issues.apache.org/jira/browse/PARQUET-302). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*

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Research direction

The issue names the Vectorized Reader and links migration documentation for the original PARQUET-302 report. Read that migration documentation and the Vectorized Reader entry points first; the stated goal is to avoid decoding data until it is required, but the payload does not identify files, tests, or a precise completion scope.

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
20/100

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