Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/156#discussion_r39465039
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/ParquetPartitionDescriptor.java
---
@@ -125,4 +117,16 @@ private String getBaseTableLocation() {
final FormatSelection origSelection = (FormatSelection)
scanRel.getDrillTable().getSelection();
return origSelection.getSelection().selectionRoot;
}
+
+ @Override
+ protected void createPartitionSublists() {
+ Set<String> fileLocations = ((ParquetGroupScan)
scanRel.getGroupScan()).getFileSet();
+ List<PartitionLocation> locations = new LinkedList<>();
+ for (String file: fileLocations) {
+ locations.add(new DFSPartitionLocation(MAX_NESTED_SUBDIRS,
getBaseTableLocation(), file));
--- End diff --
Looks like we are still putting the file name including the directory name
into heap memory, before break it into multiple sublists. In other words, this
patch will reduce the direct memory footprint allocated for value vectors. But
it does not address the heap memory issue caused by very long file names, right?
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