I am having trouble overriding the merge strategy for a dependency. The problem stems from the cassandra dependency rely on separate netty modules
val akkaCassandra = "com.typesafe.akka" %% "akka-persistence-cassandra" % "0.17" If I run the graph-dependency, it outputs: | +-io.netty:netty-handler:4.0.33.Final [info] | +-io.netty:netty-buffer:4.0.33.Final [info] | | +-io.netty:netty-common:4.0.33.Final [info] | | [info] | +-io.netty:netty-codec:4.0.33.Final [info] | | +-io.netty:netty-transport:4.0.33.Final [info] | | +-io.netty:netty-buffer:4.0.33.Final [info] | | +-io.netty:netty-common:4.0.33.Final [info] | | [info] | +-io.netty:netty-transport:4.0.33.Final [info] | +-io.netty:netty-buffer:4.0.33.Final [info] | +-io.netty:netty-common:4.0.33.Final According to this discussion, its best to just define a merge strategy as a solution: https://groups.google.com/a/lists.datastax.com/forum/#!msg/spark-connector-user/5muNwRaCJnU/sIHYh6PFEwAJ Netty unfortunately has timing dependent markers in each > io.versions.properties file in the metainf[image: Untitled.jpg] > > This means the various components included all have different timestamps > which is why everything is breaking. Unfortunately this is the underlying > C* driver's dep, we could I guess exclude these netty modules from the > driver and include netty-all in the connector instead but that seems like > overkill. > > I think just fixing the application build file is still the best solution. > According to this, the ability to override should be implemented: https://github.com/typesafehub/sbt-multi-jvm/issues/22 Nested assembly config should be exposed for customization along with the > other multijvm keys so that users can solve these issues. > i think that PR #19 <https://github.com/typesafehub/sbt-multi-jvm/pull/19> will > enable this functionality. the change at msfrank@fe862ff > #diff-ad54d47177586fbaf474e402dd1b3dc5R137 > <https://github.com/msfrank/sbt-multi-jvm/commit/fe862ffa5597dbc852a8cb52151ce620e07dd358#diff-ad54d47177586fbaf474e402dd1b3dc5R137> > will > pass through the merge strategy defined with settings key > (assemblyMergeStrategy in assembly) as long as the file is not one of > *.class, *.txt, or NOTICE, which are hardcoded merge strategies. But when I run sbt:multi-node-test lazy val test = Project(id = "core-tests", base = file( "./modules/core/tests")) .settings(SbtMultiJvm.multiJvmSettings: _*) .settings( libraryDependencies ++= Dependencies.coreTests, assemblyMergeStrategy in assembly := { case x if x.endsWith("META-INF/io.netty.versions.properties") ⇒ MergeStrategy.first }, compile in MultiJvm <<= (compile in MultiJvm) triggeredBy (compile in Test), parallelExecution in Test := false, executeTests in Test <<= (executeTests in Test, executeTests in MultiJvm ) map { case (testResults, multiNodeResults) ⇒ val overall = if (testResults.overall.id < multiNodeResults.overall.id) multiNodeResults.overall else testResults.overall Tests.Output(overall, testResults.events ++ multiNodeResults.events, testResults.summaries ++ multiNodeResults.summaries) }, licenses := Seq(("CC0", url( "http://creativecommons.org/publicdomain/zero/1.0";))), Settings.levelDb, Settings.test) it still refused to use the merge strategy, I defined. [error] 1 error was encountered during merge [trace] Stack trace suppressed: run 'last core-tests/multi-jvm:assembly' for the full output. [error] (core-tests/multi-jvm:assembly) deduplicate: different file contents found in the following: [error] ~/.ivy2/cache/io.netty/netty-handler/jars/netty-handler-4.0.33.Final .jar:META-INF/io.netty.versions.properties [error] ~/.ivy2/cache/io.netty/netty-buffer/jars/netty-buffer-4.0.33.Final. jar:META-INF/io.netty.versions.properties [error] ~/.ivy2/cache/io.netty/netty-common/jars/netty-common-4.0.33.Final. jar:META-INF/io.netty.versions.properties [error] ~/.ivy2/cache/io.netty/netty-transport/jars/netty-transport-4.0. 33.Final.jar:META-INF/io.netty.versions.properties [error] ~/.ivy2/cache/io.netty/netty-codec/jars/netty-codec-4.0.33.Final.jar :META-INF/io.netty.versions.propertie -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
