LuciferYang commented on a change in pull request #30784:
URL: https://github.com/apache/spark/pull/30784#discussion_r544005908
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File path: pom.xml
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@@ -2503,9 +2503,6 @@
<recompileMode>incremental</recompileMode>
<useZincServer>true</useZincServer>
<args>
- <arg>-unchecked</arg>
Review comment:
With `-unchecked`, Scala 2.13 has compilation error as follow:
```
[ERROR]
/spark-source/sql/core/src/test/scala/org/apache/spark/sql/streaming/sources/StreamingDataSourceV2Suite.scala:293:
a pure expression does nothing in statement position
```
So Scala 2.12 use `-unchecked`, Scala 2.13 use `-Wconf:cat=unchecked:wv`
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