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 ....
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---