To answer my own question, it appears certain tihngs (like parents, etc.) caused the issue. I was using sbt 0.13.8. Using 0.13.9 works fine.
From: as...@live.com To: user@spark.apache.org Subject: Working offline with spark-core and sbt Date: Thu, 31 Dec 2015 02:07:26 +0000 Hello,I'm trying to work offline with spark-core. I've got an empty project with the following: name := "sbtSand" version := "1.0" scalaVersion := "2.11.7" libraryDependencies ++= Seq( "joda-time" % "joda-time" % "2.9.1", "org.apache.spark" %% "spark-core" % "1.5.2" ) I can "sbt compile" this. But if I go offline, and "sbt clean", then "sbt compile", then it fails. If I remove the spark-core dependency (but leave joda-time in), then "sbt compile" succeeds, and the package from the ivy2 cache is used. I also added scalatest, and that works offline (assuming the package is in ~/.ivy2/cache). However, I can't find a way to work offline with spark-core. Is there a simple way to get this working? Crossposted here from http://stackoverflow.com/questions/34537886/sbt-ivy-offline-work-and-weirdness as I'm wondering if somebody working with Spark has found a solution. Thanks,Ashic.