Github user Ben-Zvi commented on a diff in the pull request:
https://github.com/apache/drill/pull/822#discussion_r119258769
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/aggregate/HashAggTemplate.java
---
@@ -230,15 +452,35 @@ public void setup(HashAggregate hashAggrConfig,
HashTableConfig htConfig, Fragme
throw new IllegalArgumentException("Wrong number of workspace
variables.");
}
-// this.context = context;
+ this.context = context;
this.stats = stats;
- this.allocator = allocator;
+ this.allocator = oContext.getAllocator();
+ this.oContext = oContext;
this.incoming = incoming;
-// this.schema = incoming.getSchema();
this.outgoing = outgoing;
this.outContainer = outContainer;
+ this.operatorId = hashAggrConfig.getOperatorId();
+
+ is2ndPhase = hashAggrConfig.getAggPhase() ==
AggPrelBase.OperatorPhase.PHASE_2of2;
+ isTwoPhase = hashAggrConfig.getAggPhase() !=
AggPrelBase.OperatorPhase.PHASE_1of1;
+ canSpill = isTwoPhase; // single phase can not spill
--- End diff --
Three booleans is 2^3 ( == 8), and this space is sparse as there are
dependencies (e.g. Single phase can not spill, and has no 1st/2nd).
Those booleans are used only in a couple of places in the code to make a
logical difference, hence it'll be an overkill to subclass based on these
changes. They are used in many other places for logging messages ....
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