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https://issues.apache.org/jira/browse/FLINK-14970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dezhi Cai updated FLINK-14970:
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Attachment: image-2019-12-04-13-56-14-815.png
> Doomed test for equality to NaN
> -------------------------------
>
> Key: FLINK-14970
> URL: https://issues.apache.org/jira/browse/FLINK-14970
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Legacy Planner, Table SQL / Planner
> Affects Versions: 1.8.2, 1.9.0, 1.9.1
> Reporter: Dezhi Cai
> Assignee: Dezhi Cai
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Attachments: image-2019-11-27-16-51-00-150.png,
> image-2019-11-27-16-51-06-801.png, image-2019-12-04-13-39-38-549.png,
> image-2019-12-04-13-40-19-441.png, image-2019-12-04-13-55-14-117.png,
> image-2019-12-04-13-56-14-815.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> scala pattern matching can't handle "NaN","NegativeInfinity " etc.
> in GenerateUtils, CodeGenerator, some code logic fall into this issue, please
> refer to
> the screenshot for details.
> {code:java}
> def main(args: Array[String]): Unit = {
> val floatVaue = Float.NaN
> floatVaue match {
> case Float.NaN => println("Float.NaN")
> case Float.NegativeInfinity => println("Float.NegativeInfinity")
> case _ => println("not match")
> }
> }
> will output: not match
> {code}
> {code:java}
> // this one works
> def main(args: Array[String]): Unit = {
> val floatVaue = Float.NaN
> floatVaue match {
> case value if value.isNaN => println("Float.NaN")
> case value if value.isNegInfinity => println("Float.NegativeInfinity")
> case _ => println("not match")
> }
> }
> will output: Float.NaN
> {code}
>
>
> org.apache.flink.table.planner.codegen.GenerateUtils
> !image-2019-11-27-16-51-06-801.png|width=723,height=257!
> org.apache.flink.table.codegen.CodeGenerator
> !image-2019-11-27-16-51-00-150.png|width=727,height=158!
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