Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2562#discussion_r82899800
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/runtime/aggregate/AvgAggregate.scala
---
@@ -23,6 +23,8 @@ import org.apache.flink.api.table.Row
import java.math.BigDecimal
import java.math.BigInteger
+import org.apache.flink.streaming.api.windowing.windows.Window
--- End diff --
Please undo the reformatting changes and unnecessary import on this file.
Please check the other `Aggregate` implementations as well.
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