Github user JamesRTaylor commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/281#discussion_r151015089
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/execute/AggregatePlan.java ---
@@ -112,7 +114,26 @@ private AggregatePlan(StatementContext context,
FilterableStatement statement, T
public Expression getHaving() {
return having;
}
-
+
+ @Override
+ public Cost getCost() throws SQLException {
+ Long byteCount = getEstimatedBytesToScan();
+ if (byteCount == null) {
+ return Cost.ZERO;
+ }
+
--- End diff --
What does parallelLevel represent? Is that the level of parallelization
done on the client? Is that derivable from thread pool size or cluster size?
For now, maybe have a constant and doc it a bit.
---
