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https://issues.apache.org/jira/browse/DRILL-7330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17059472#comment-17059472
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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_r392610708
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/easy/EasyFormatPlugin.java
##########
@@ -315,16 +314,16 @@ private CloseableRecordBatch
buildScanBatch(FragmentContext context,
readers.add(recordReader);
final List<String> partitionValues = ColumnExplorer.listPartitionValues(
work.getPath(), scan.getSelectionRoot(), false);
- final Map<String, String> implicitValues =
columnExplorer.populateImplicitColumns(
- work.getPath(), partitionValues, supportsFileImplicitColumns);
+ final Map<String, String> implicitValues =
columnExplorer.populateImplicitAndInternalColumns(
+ work.getPath(), partitionValues, supportsFileImplicitColumns, dfs);
Review comment:
As we discussed, this can fail with the present design. We should catch the
exception and translate it to something useful for the user.
BTW: how might you test the missing file case so we can see what error is
returned? Maybe we need a way to inject an error when checking the modification
date?
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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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