ZhanGHanG9991 commented on code in PR #7277:
URL: https://github.com/apache/iotdb/pull/7277#discussion_r971471937


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server/src/main/java/org/apache/iotdb/db/mpp/aggregation/Accumulator.java:
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@@ -18,20 +18,20 @@
  */
 package org.apache.iotdb.db.mpp.aggregation;
 
+import org.apache.iotdb.db.mpp.execution.operator.window.IWindow;
 import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
 import org.apache.iotdb.tsfile.file.metadata.statistics.Statistics;
-import org.apache.iotdb.tsfile.read.common.TimeRange;
 import org.apache.iotdb.tsfile.read.common.block.column.Column;
 import org.apache.iotdb.tsfile.read.common.block.column.ColumnBuilder;
 
 public interface Accumulator {
 
   /**
-   * Column should be like: | Time | Value |
+   * Column should be like: | ControlColumn | Value |

Review Comment:
   I've corrected it. In the event window, we may use these three columns.



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