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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2019/03/30 07:31:00 UTC
[jira] [Assigned] (SPARK-27121) Resolve Scala compiler failure for
Java 9+ in REPL
[ https://issues.apache.org/jira/browse/SPARK-27121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen reassigned SPARK-27121:
---------------------------------
Assignee: Sean Owen
> Resolve Scala compiler failure for Java 9+ in REPL
> --------------------------------------------------
>
> Key: SPARK-27121
> URL: https://issues.apache.org/jira/browse/SPARK-27121
> Project: Spark
> Issue Type: Sub-task
> Components: Spark Shell
> Affects Versions: 3.0.0
> Reporter: Sean Owen
> Assignee: Sean Owen
> Priority: Major
>
> Currently under Java 11:
> {code}
> SingletonReplSuite:
> [init] error: error while loading Object, Missing dependency 'object scala in compiler mirror', required by /modules/java.base/java/lang/Object.class
> Failed to initialize compiler: object scala in compiler mirror not found.
> ** Note that as of 2.8 scala does not assume use of the java classpath.
> ** For the old behavior pass -usejavacp to scala, or if using a Settings
> ** object programmatically, settings.usejavacp.value = true.
> Failed to initialize compiler: object scala in compiler mirror not found.
> ** Note that as of 2.8 scala does not assume use of the java classpath.
> ** For the old behavior pass -usejavacp to scala, or if using a Settings
> ** object programmatically, settings.usejavacp.value = true.
> org.apache.spark.repl.SingletonReplSuite *** ABORTED ***
> Exception encountered when invoking run on a nested suite - The code passed to eventually never returned normally. Attempted 110 times over 50.062409015 seconds. Last failure message: cond.apply() was false current output: Interpreter encountered errors during initialization!
> . (SingletonReplSuite.scala:92)
> ReplSuite:
> - propagation of local properties
> [init] error: error while loading Object, Missing dependency 'object scala in compiler mirror', required by /modules/java.base/java/lang/Object.class
> ...
> {code}
> This is a fairly well-known issue with Scala and Java 9, though workarounds online don't seem to apply to the REPL. So far I do not think Scala promises compiler compatibility with Java 9+, and indeed that's why we compile with Java 8. However the REPL compiles on the fly.
> See for example https://github.com/sbt/sbt/issues/2958
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