Github user amansinha100 commented on a diff in the pull request:
https://github.com/apache/drill/pull/328#discussion_r50302251
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/FileSystemPartitionDescriptor.java
---
@@ -84,9 +99,17 @@ public int getMaxHierarchyLevel() {
@Override
public GroupScan createNewGroupScan(List<String> newFiles) throws
IOException {
- final FileSelection newSelection = FileSelection.create(null,
newFiles, getBaseTableLocation());
- final FileGroupScan newScan =
((FileGroupScan)scanRel.getGroupScan()).clone(newSelection);
- return newScan;
+ if (scanRel instanceof DrillScanRel) {
+ final FileSelection newFileSelection = new FileSelection(null,
newFiles, getBaseTableLocation());
+ final FileGroupScan newScan =
((FileGroupScan)((DrillScanRel)scanRel).getGroupScan()).clone(newFileSelection);
+ return newScan;
+ } else {
+ throw new UnsupportedOperationException("Does not allow to get
groupScan for EnumerableTableScan");
--- End diff --
The else condition could be anything other than DrillScanRel, so you need
not mention EnumerableTableScan.
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