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https://issues.apache.org/jira/browse/FLINK-6250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15984783#comment-15984783
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ASF GitHub Bot commented on FLINK-6250:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/3771#discussion_r113446823
--- Diff:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/runtime/aggregate/ProcTimeBoundedRowsOver.scala
---
@@ -72,7 +73,15 @@ class ProcTimeBoundedRowsOver(
genAggregations.code)
LOG.debug("Instantiating AggregateHelper.")
function = clazz.newInstance()
-
+
+ var initialized = false
+ for(i <- distinctAggFlags.indices){
+ if(distinctAggFlags(i) && !initialized){
+ function.initialize(getRuntimeContext())
--- End diff --
I would always call `function.initialize()`. If there are no distinct
aggregates, nothing will happen
> Distinct procTime with Rows boundaries
> --------------------------------------
>
> Key: FLINK-6250
> URL: https://issues.apache.org/jira/browse/FLINK-6250
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: radu
> Assignee: Stefano Bortoli
>
> Support proctime with rows boundaries
> Q1.1. `SELECT SUM( DISTINCT b) OVER (ORDER BY procTime() ROWS BETWEEN 2
> PRECEDING AND CURRENT ROW) FROM stream1`
> Q1.1. `SELECT COUNT(b), SUM( DISTINCT b) OVER (ORDER BY procTime() ROWS
> BETWEEN 2 PRECEDING AND CURRENT ROW) FROM stream1`
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