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https://issues.apache.org/jira/browse/DRILL-7763?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17216182#comment-17216182
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ASF GitHub Bot commented on DRILL-7763:
---------------------------------------
cgivre commented on a change in pull request #2092:
URL: https://github.com/apache/drill/pull/2092#discussion_r507137604
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/base/AbstractGroupScanWithMetadata.java
##########
@@ -451,19 +456,20 @@ public boolean supportsLimitPushdown() {
@Override
public GroupScan applyLimit(int maxRecords) {
- maxRecords = Math.max(maxRecords, 1); // Make sure it request at least 1
row -> 1 file.
+ this.maxRecords = maxRecords;
Review comment:
Removed... the `TODO` is actually unnecessary.
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> Add Limit Pushdown to File Based Storage Plugins
> ------------------------------------------------
>
> Key: DRILL-7763
> URL: https://issues.apache.org/jira/browse/DRILL-7763
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.17.0
> Reporter: Charles Givre
> Assignee: Charles Givre
> Priority: Major
> Fix For: 1.19.0
>
>
> As currently implemented, when querying a file, Drill will read the entire
> file even if a limit is specified in the query. This PR does a few things:
> # Refactors the EasyGroupScan, EasySubScan, and EasyFormatConfig to allow
> the option of pushing down limits.
> # Applies this to all the EVF based format plugins which are: LogRegex,
> PCAP, SPSS, Esri, Excel and Text (CSV).
> Due to JSON's fluid schema, it would be unwise to adopt the limit pushdown as
> it could result in very inconsistent schemata.
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