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https://issues.apache.org/jira/browse/DRILL-7442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16973053#comment-16973053
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ASF GitHub Bot commented on DRILL-7442:
---------------------------------------
paul-rogers commented on pull request #1897: DRILL-7442: Create multi-batch row
set reader
URL: https://github.com/apache/drill/pull/1897#discussion_r345589819
##########
File path:
exec/vector/src/main/java/org/apache/drill/exec/vector/accessor/reader/UnionReaderImpl.java
##########
@@ -182,6 +182,15 @@ public void reposition() {
}
}
+ @Override
+ public void rebind() {
+ for (int i = 0; i < variants.length; i++) {
Review comment:
Also performance-sensitive code.
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> Create multi-batch row set reader
> ---------------------------------
>
> Key: DRILL-7442
> URL: https://issues.apache.org/jira/browse/DRILL-7442
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Minor
>
> The "row set" work provided a {{RowSetWriter}} and {{RowSetReader}} to write
> to and read from a single batch. The {{ResultSetLoader}} class provided a
> writer that spans multiple batches, handling schema changes across batches
> and so on.
> This ticket introduces a reader equivalent, the {{ResultSetReader}} that
> reads an entire result set of multiple batches, handling schema changes along
> the way.
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