[ https://issues.apache.org/jira/browse/SPARK-26806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shixiong Zhu updated SPARK-26806:
---------------------------------
Affects Version/s: 2.2.2
2.2.3
> 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, 2.2.2, 2.2.3, 2.3.0, 2.3.1, 2.3.2, 2.4.0
> Reporter: liancheng
> Assignee: Shixiong Zhu
> Priority: Major
> Fix For: 2.3.3, 2.4.1, 3.0.0, 2.2.4
>
>
> 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}
> This issue was reported by [~liancheng]
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