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https://issues.apache.org/jira/browse/BEAM-7844?focusedWorklogId=286188&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-286188
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ASF GitHub Bot logged work on BEAM-7844:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 31/Jul/19 20:19
            Start Date: 31/Jul/19 20:19
    Worklog Time Spent: 10m 
      Work Description: riazela commented on pull request #9185: [BEAM-7844] 
Custom MetadataHandler for RowRateWindow
URL: https://github.com/apache/beam/pull/9185#discussion_r309412727
 
 

 ##########
 File path: 
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/planner/RowRateWindow.java
 ##########
 @@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.beam.sdk.extensions.sql.impl.planner;
+
+/** This is a utility class to represent rowCount, rate and window. */
+public class RowRateWindow {
 
 Review comment:
   Yes, I agree. I'll change it to NodeEstimates because it should be provided 
by all nodes.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 286188)
    Time Spent: 3h  (was: 2h 50m)

> Custom MetadataHandler for RowRateWindow
> ----------------------------------------
>
>                 Key: BEAM-7844
>                 URL: https://issues.apache.org/jira/browse/BEAM-7844
>             Project: Beam
>          Issue Type: New Feature
>          Components: dsl-sql
>            Reporter: Alireza Samadianzakaria
>            Assignee: Alireza Samadianzakaria
>            Priority: Major
>          Time Spent: 3h
>  Remaining Estimate: 0h
>
> Calcite has a getRowCount method and a handler for that. However, we need 
> rate and window as well. This is a requirement for Beam-7777



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