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https://issues.apache.org/jira/browse/DRILL-7330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17059465#comment-17059465
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ASF GitHub Bot commented on DRILL-7330:
---------------------------------------
paul-rogers commented on pull request #2026: DRILL-7330: Implement metadata
usage for all format plugins
URL: https://github.com/apache/drill/pull/2026#discussion_r392613191
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/ParquetGroupScan.java
##########
@@ -142,25 +141,25 @@ public ParquetGroupScan(String userName,
metadataProviderManager = new FileSystemMetadataProviderManager();
}
- ParquetFileTableMetadataProviderBuilder builder =
- (ParquetFileTableMetadataProviderBuilder)
metadataProviderManager.builder(MetadataProviderManager.MetadataProviderKind.PARQUET_TABLE);
+ ParquetTableMetadataProviderBuilder<?> builder =
+ tableMetadataProviderBuilder(metadataProviderManager);
- this.metadataProvider = builder
+ ParquetTableMetadataProvider metadataProvider = builder
.withSelection(selection)
.withReaderConfig(readerConfig)
.withFileSystem(fs)
.withCorrectCorruptedDates(formatConfig.areCorruptDatesAutoCorrected())
.build();
- ParquetTableMetadataProvider parquetTableMetadataProvider =
(ParquetTableMetadataProvider) this.metadataProvider;
- this.usedMetadataCache =
parquetTableMetadataProvider.isUsedMetadataCache();
- this.usedMetastore = parquetTableMetadataProvider instanceof
MetastoreParquetTableMetadataProvider;
- this.selectionRoot = parquetTableMetadataProvider.getSelectionRoot();
- this.entries = parquetTableMetadataProvider.getEntries();
- this.fileSet = parquetTableMetadataProvider.getFileSet();
+ this.usedMetadataCache = metadataProvider.isUsedMetadataCache();
+ this.usedMetastore = metadataProviderManager.usesMetastore();
+ this.selectionRoot = metadataProvider.getSelectionRoot();
+ this.entries = metadataProvider.getEntries();
+ this.fileSet = metadataProvider.getFileSet();
+ this.metadataProvider = metadataProvider;
Review comment:
These are the same six attributes mentioned for the generic Easy group scan.
Rather than duplicating them, can we encapsulate them in a single
`MetadataResult` class? (You pick the name.)
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> Implement metadata usage for text format plugin
> -----------------------------------------------
>
> Key: DRILL-7330
> URL: https://issues.apache.org/jira/browse/DRILL-7330
> Project: Apache Drill
> Issue Type: Sub-task
> Reporter: Arina Ielchiieva
> Assignee: Vova Vysotskyi
> Priority: Major
> Fix For: 1.18.0
>
>
> 1. Change the current group scan to leverage Schema from Metastore;
> 2. Use stats for enabling additional logical planning rules for text format
> plugin. It will enable such optimizations as limit, filter push and so on.
> + add possibility to pass schema through schema file (using path or table
> root), inline.
> + check for other enhancements in analyze command
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