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  1. Spark
  2. SPARK-45314 Drop Scala 2.12 and make Scala 2.13 by default
  3. SPARK-45627

Fix `symbol literal is deprecated`

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    Description

      For the code `val symbol = 'symbol`, it's a compile warning in Scala 2.13, but it's a compile error in Scala 3.

      • Scala 2.13 

       

      Welcome to Scala 2.13.12 (OpenJDK 64-Bit Server VM, Java 17.0.8).
Type in expressions for evaluation. Or try :help.
scala> val symbol = 'symbol
                    ^
       warning: symbol literal is deprecated; use Symbol("symbol") instead [quickfixable]
val symbol: Symbol = Symbol(symbol)

       

       

      • Scala 3

       

      Welcome to Scala 3.3.1 (17.0.8, Java OpenJDK 64-Bit Server VM).
Type in expressions for evaluation. Or try :help.
                                                                                                                                                                                                                                                    
scala> val symbol = 'symbol
-- Error: ----------------------------------------------------------------------
1 |val symbol = 'symbol
  |             ^
  |symbol literal 'symbol is no longer supported,
  |use a string literal "symbol" or an application Symbol("symbol") instead,
  |or enclose in braces '{symbol} if you want a quoted expression.
  |For now, you can also `import language.deprecated.symbolLiterals` to accept
  |the idiom, but this possibility might no longer be available in the future.

       

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        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-34443 Replace symbol literals with Symbol constructor invocations to comply with Scala 2.13

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • In Progress

          Improvement - An improvement or enhancement to an existing feature or task. SPARK-38351 [TESTS] Replace 'abc symbols with Symbol("abc") in tests

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          links to

          Web Link GitHub Pull Request #43487

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              panbingkun BingKun Pan
              LuciferYang Yang Jie
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                Updated:
                Resolved: