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https://issues.apache.org/jira/browse/FLINK-20378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17239529#comment-17239529
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Jark Wu commented on FLINK-20378:
---------------------------------
Supporting TIMESTAMP WITH LOCAL TIME ZONE is on the roadmap (v1.13). I have
created an issue: https://issues.apache.org/jira/browse/FLINK-20387
> Watermark generation check TIMESTAMP_WITHOUT_TIME_ZONE
> ------------------------------------------------------
>
> Key: FLINK-20378
> URL: https://issues.apache.org/jira/browse/FLINK-20378
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 1.11.1
> Reporter: wxmimperio
> Priority: Major
>
>
>
> {code:java}
> def generateWatermarkGenerator(
> config: TableConfig,
> inputType: RowType,
> watermarkExpr: RexNode): GeneratedWatermarkGenerator = {
> // validation
> val watermarkOutputType =
> FlinkTypeFactory.toLogicalType(watermarkExpr.getType)
> if (watermarkOutputType.getTypeRoot !=
> LogicalTypeRoot.TIMESTAMP_WITHOUT_TIME_ZONE) {
> throw new CodeGenException(
> "WatermarkGenerator only accepts output data type of TIMESTAMP," +
> " but is " + watermarkOutputType)
> }
> {code}
>
> Why does watermark generation need to be detected as
> TIMESTAMP_WITHOUT_TIME_ZONE?
> If I remove this check, what effect will it have on the watermark?
>
>
>
>
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