[ https://issues.apache.org/jira/browse/SPARK-26806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-26806:
------------------------------------
Assignee: Apache Spark (was: Shixiong Zhu)
> EventTimeStats.merge doesn't handle "zero.merge(zero)" correctly
> ----------------------------------------------------------------
>
> Key: SPARK-26806
> URL: https://issues.apache.org/jira/browse/SPARK-26806
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 2.2.1, 2.3.0, 2.3.1, 2.3.2, 2.4.0
> Reporter: Shixiong Zhu
> Assignee: Apache Spark
> Priority: Major
>
> Right now, EventTimeStats.merge doesn't handle "zero.merge(zero)". This will make "avg"
become "NaN". And whatever gets merged with the result of "zero.merge(zero)", "avg" will still
be "NaN". Then finally, "NaN".toLong will return "0" and the user will see the following incorrect
report:
> {code}
> "eventTime" : {
> "avg" : "1970-01-01T00:00:00.000Z",
> "max" : "2019-01-31T12:57:00.000Z",
> "min" : "2019-01-30T18:44:04.000Z",
> "watermark" : "1970-01-01T00:00:00.000Z"
> }
> {code}
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