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https://issues.apache.org/jira/browse/SPARK-26636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16744614#comment-16744614
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Hyukjin Kwon commented on SPARK-26636:
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For questions. should better go to mailing list. Let's interact with it first
before filing an issue. I think you could have a better answer there.
> How to know that a partition is ready when using Structured Streaming
> ----------------------------------------------------------------------
>
> Key: SPARK-26636
> URL: https://issues.apache.org/jira/browse/SPARK-26636
> Project: Spark
> Issue Type: Improvement
> Components: Structured Streaming
> Affects Versions: 2.3.2
> Reporter: Guo Wei
> Priority: Minor
>
> When using structured streaming, we use "partitionBy" api to partition the
> output data, and use the watermark based on event-time to handle delay
> records, but how to tell downstream users that a partition is ready? For
> example, when to write an empty "hadoop.done" file in a paritition directory?
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