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https://issues.apache.org/jira/browse/SPARK-27624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-27624:
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Assignee: Apache Spark
> Fix CalenderInterval to show an empty interval correctly
> --------------------------------------------------------
>
> Key: SPARK-27624
> URL: https://issues.apache.org/jira/browse/SPARK-27624
> Project: Spark
> Issue Type: Bug
> Components: Spark Core
> Affects Versions: 2.3.3, 2.4.2, 3.0.0
> Reporter: Dongjoon Hyun
> Assignee: Apache Spark
> Priority: Minor
>
> *BEFORE*
> {code}
> scala> spark.readStream.schema("ts
> timestamp").parquet("/tmp/t").withWatermark("ts", "1 microsecond").explain
> == Physical Plan ==
> EventTimeWatermark ts#0: timestamp, interval 1 microseconds
> +- StreamingRelation FileSource[/tmp/t], [ts#0]
> scala> spark.readStream.schema("ts
> timestamp").parquet("/tmp/t").withWatermark("ts", "0 microsecond").explain
> == Physical Plan ==
> EventTimeWatermark ts#3: timestamp, interval
> +- StreamingRelation FileSource[/tmp/t], [ts#3]
> {code}
> *AFTER*
> {code}
> scala> spark.readStream.schema("ts
> timestamp").parquet("/tmp/t").withWatermark("ts", "1 microsecond").explain
> == Physical Plan ==
> EventTimeWatermark ts#0: timestamp, interval 1 microseconds
> +- StreamingRelation FileSource[/tmp/t], [ts#0]
> scala> spark.readStream.schema("ts
> timestamp").parquet("/tmp/t").withWatermark("ts", "0 microsecond").explain
> == Physical Plan ==
> EventTimeWatermark ts#3: timestamp, interval 0 microseconds
> +- StreamingRelation FileSource[/tmp/t], [ts#3]
> {code}
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