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https://issues.apache.org/jira/browse/FLINK-21931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17307124#comment-17307124
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Dawid Wysakowicz commented on FLINK-21931:
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The page of interest is:
https://ci.apache.org/projects/flink/flink-docs-release-1.12/dev/table/sql/create.html#watermark
??If watermark interval is 0ms, the generated watermarks will be emitted
per-record if it is not null and greater than the last emitted one.??
> Watermark documentation needs to be fixed
> -----------------------------------------
>
> Key: FLINK-21931
> URL: https://issues.apache.org/jira/browse/FLINK-21931
> Project: Flink
> Issue Type: Bug
> Components: Documentation, Table SQL / API
> Affects Versions: 1.12.2
> Reporter: Matthias
> Priority: Minor
>
> There's a [ML
> thread|http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/pipeline-auto-watermark-interval-vs-setAutoWatermarkInterval-td41891.html]
> about inconsistencies in the Watermark documentation. The description
> provided by the docs about setting {{pipeline.auto-watermark-interval}} to
> {{0}} does not match the actual implementation and the description provided
> in the JavaDocs of
> [ExecutionConfig.setAutoWatermarkInterval|https://ci.apache.org/projects/flink/flink-docs-master/api/java/org/apache/flink/api/common/ExecutionConfig.html#setAutoWatermarkInterval-long-].
> I went through the code verifying that the functionality described by the
> JavaDoc is correct. Setting the parameter to {{0}} disables the automatic
> watermark generation. The docs need to be updated accordingly.
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