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https://issues.apache.org/jira/browse/DRILL-7199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16831188#comment-16831188
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ASF GitHub Bot commented on DRILL-7199:
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dvjyothsna commented on pull request #1771: DRILL-7199: Optimize population of
metadata for non-interesting columns
URL: https://github.com/apache/drill/pull/1771#discussion_r280180122
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/parquet/BaseParquetMetadataProvider.java
##########
@@ -87,6 +88,7 @@
private TableMetadata tableMetadata;
private List<PartitionMetadata> partitions;
private Map<Path, FileMetadata> files;
+ private NonInterestingColumnsMetadata nonInterestingColumnsMetadata;
Review comment:
Some of the unit tests actually use the metadata cache files from older
versions.
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> Optimize the time taken to populate column statistics for non-interesting
> columns
> ---------------------------------------------------------------------------------
>
> Key: DRILL-7199
> URL: https://issues.apache.org/jira/browse/DRILL-7199
> Project: Apache Drill
> Issue Type: Bug
> Reporter: Venkata Jyothsna Donapati
> Assignee: Venkata Jyothsna Donapati
> Priority: Minor
> Fix For: 1.17.0
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> Currently populating column statistics for non-interesting columns very long
> since it is populated for every row group. Since non-interesting column
> statistics are common for the table, it can be populated once and can be
> reused.
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