parquet-mr must handle statistics in files written by parquet-cpp
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- Java
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Description
`shouldIgnoreStatistics` in parquet-mr always accepts statistics for files written by other applications including parquet-cpp. We must fix this to correctly handle statistics written by parquet-cpp versions.
**Reporter**: [Deepak Majeti](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mdeepak) / @majetideepak
**Note**: *This issue was originally created as [PARQUET-1017](https://issues.apache.org/jira/browse/PARQUET-1017). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating shouldIgnoreStatistics in parquet-mr and review how it decides whether statistics from other applications are usable. Compare the handling required for files written by parquet-cpp versions, using the linked PARQUET-1017 and migration documentation for context. Done means parquet-mr correctly handles those statistics without accepting incompatible metadata.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- data-engineering
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100