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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9715) Support versioned joins with event time
Date Mon, 01 Oct 2018 13:33:02 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16633997#comment-16633997
] 

ASF GitHub Bot commented on FLINK-9715:
---------------------------------------

twalthr commented on a change in pull request #6776: [FLINK-9715][table] Support temporal
join with event time
URL: https://github.com/apache/flink/pull/6776#discussion_r221569725
 
 

 ##########
 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/join/TemporalProcessTimeJoin.scala
 ##########
 @@ -20,24 +20,24 @@ package org.apache.flink.table.runtime.join
 import org.apache.flink.api.common.functions.FlatJoinFunction
 import org.apache.flink.api.common.state.{ValueState, ValueStateDescriptor}
 import org.apache.flink.api.common.typeinfo.TypeInformation
-import org.apache.flink.configuration.Configuration
-import org.apache.flink.streaming.api.functions.co.CoProcessFunction
+import org.apache.flink.streaming.api.operators.{AbstractStreamOperator, TimestampedCollector,
TwoInputStreamOperator}
+import org.apache.flink.streaming.runtime.streamrecord.StreamRecord
 import org.apache.flink.table.api.StreamQueryConfig
 import org.apache.flink.table.codegen.Compiler
 import org.apache.flink.table.runtime.CRowWrappingCollector
 import org.apache.flink.table.runtime.types.CRow
 import org.apache.flink.table.typeutils.TypeCheckUtils._
 import org.apache.flink.table.util.Logging
 import org.apache.flink.types.Row
-import org.apache.flink.util.Collector
 
-class TemporalJoin(
+class TemporalProcessTimeJoin(
     leftType: TypeInformation[Row],
     rightType: TypeInformation[Row],
     genJoinFuncName: String,
     genJoinFuncCode: String,
     queryConfig: StreamQueryConfig)
-  extends CoProcessFunction[CRow, CRow, CRow]
+  extends AbstractStreamOperator[CRow]
 
 Review comment:
   We should have a clear separation between Flink functions and operators. All operator extensions
should end up in `org.apache.flink.table.runtime.operators` and should only contain minimal
changes that we could contribute back to `flink-core`. I suggest to undo the changes in this
class.

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> Support versioned joins with event time
> ---------------------------------------
>
>                 Key: FLINK-9715
>                 URL: https://issues.apache.org/jira/browse/FLINK-9715
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API &amp; SQL
>    Affects Versions: 1.5.0
>            Reporter: Piotr Nowojski
>            Assignee: Piotr Nowojski
>            Priority: Major
>              Labels: pull-request-available
>
> Queries like:
> {code:java}
> SELECT 
>   o.amount * r.rate 
> FROM 
>   Orders AS o, 
>   LATERAL TABLE (Rates(o.rowtime)) AS r 
> WHERE o.currency = r.currency{code}
> should work with event time



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