haimeiguo commented on a change in pull request #2060:
URL: https://github.com/apache/iotdb/pull/2060#discussion_r524909297
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File path:
server/src/main/java/org/apache/iotdb/db/qp/strategy/PhysicalGenerator.java
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@@ -687,8 +687,10 @@ private void deduplicate(QueryPlan queryPlan, int
fetchSize)
if (queryPlan instanceof GroupByTimePlan) {
GroupByTimePlan plan = (GroupByTimePlan) queryPlan;
// the actual row number of group by query should be calculated from
startTime, endTime and interval.
- fetchSize = Math
- .min((int) ((plan.getEndTime() - plan.getStartTime()) /
plan.getInterval()), fetchSize);
+ long interval = (plan.getEndTime() - plan.getStartTime()) /
plan.getInterval();
Review comment:
yes. if you set interval = 0, it will throw exception: "Interval must
more than 0"
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