Github user hyunsik commented on a diff in the pull request:
https://github.com/apache/tajo/pull/612#discussion_r33211777
--- Diff:
tajo-core/src/main/java/org/apache/tajo/engine/planner/physical/SeqScanExec.java
---
@@ -228,26 +237,15 @@ public Tuple next() throws IOException {
return null;
}
- Tuple tuple;
- Tuple outTuple = new VTuple(outColumnNum);
-
- if (!plan.hasQual()) {
- if ((tuple = scanner.next()) != null) {
- projector.eval(tuple, outTuple);
- outTuple.setOffset(tuple.getOffset());
- return outTuple;
- } else {
- return null;
- }
- } else {
- while ((tuple = scanner.next()) != null) {
- if (qual.eval(tuple).isTrue()) {
- projector.eval(tuple, outTuple);
- return outTuple;
- }
- }
- return null;
+ while(scanIt.hasNext()) {
+ Tuple outTuple = new VTuple(outColumnNum);
--- End diff --
It is actually for every row. While condition is just for check if there is
next row, and every while loop will be just returned for each tuple.
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