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https://issues.apache.org/jira/browse/DRILL-5846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426239#comment-16426239
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ASF GitHub Bot commented on DRILL-5846:
---------------------------------------
Github user vrozov commented on a diff in the pull request:
https://github.com/apache/drill/pull/1060#discussion_r179296715
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.java
---
@@ -161,30 +162,25 @@ public ParquetRecordReader(
ParquetMetadata footer,
List<SchemaPath> columns,
ParquetReaderUtility.DateCorruptionStatus dateCorruptionStatus)
throws ExecutionSetupException {
- this.name = path;
- this.hadoopPath = new Path(path);
- this.fileSystem = fs;
- this.codecFactory = codecFactory;
- this.rowGroupIndex = rowGroupIndex;
- this.batchSize = batchSize;
- this.footer = footer;
+
--- End diff --
Please avoid changes that affect code style only.
> Improve Parquet Reader Performance for Flat Data types
> -------------------------------------------------------
>
> Key: DRILL-5846
> URL: https://issues.apache.org/jira/browse/DRILL-5846
> Project: Apache Drill
> Issue Type: Improvement
> Components: Storage - Parquet
> Affects Versions: 1.11.0
> Reporter: salim achouche
> Assignee: salim achouche
> Priority: Major
> Labels: performance
> Fix For: 1.14.0
>
> Attachments: 2542d447-9837-3924-dd12-f759108461e5.sys.drill,
> 2542d49b-88ef-38e3-a02b-b441c1295817.sys.drill
>
>
> The Parquet Reader is a key use-case for Drill. This JIRA is an attempt to
> further improve the Parquet Reader performance as several users reported that
> Parquet parsing represents the lion share of the overall query execution. It
> tracks Flat Data types only as Nested DTs might involve functional and
> processing enhancements (e.g., a nested column can be seen as a Document;
> user might want to perform operations scoped at the document level that is no
> need to span all rows). Another JIRA will be created to handle the nested
> columns use-case.
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