Yes it is necessary to do a mvn clean when encountering this issue. Typically you would have changed one or more of the profiles/options - which leads to this occurring.
2014-10-22 22:00 GMT-07:00 Ryan Williams <ryan.blake.willi...@gmail.com>: > I started building Spark / running Spark tests this weekend and on maybe > 5-10 occasions have run into a compiler crash while compiling > DataTypeConversions.scala. > > Here <https://gist.github.com/ryan-williams/7673d7da928570907f4d> is a > full gist of an innocuous test command (mvn test > -Dsuites='*KafkaStreamSuite') exhibiting this behavior. Problem starts on > L512 > <https://gist.github.com/ryan-williams/7673d7da928570907f4d#file-stdout-L512> > and there’s a final stack trace at the bottom > <https://gist.github.com/ryan-williams/7673d7da928570907f4d#file-stdout-L671> > . > > mvn clean or ./sbt/sbt clean “fix” it (I believe I’ve observed the issue > while compiling with each tool), but are annoying/time-consuming to do, > obvs, and it’s happening pretty frequently for me when doing only small > numbers of incremental compiles punctuated by e.g. checking out different > git commits. > > Have other people seen this? This post > <http://apache-spark-user-list.1001560.n3.nabble.com/spark-github-source-build-error-td10532.html> > on this list is basically the same error, but in TestSQLContext.scala and this > SO post > <http://stackoverflow.com/questions/25211071/compilation-errors-in-spark-datatypeconversions-scala-on-intellij-when-using-m> > claims to be hitting it when trying to build in intellij. > > It seems likely to be a bug in scalac; would finding a consistent repro > case and filing it somewhere be useful? > >
