You will have to include dependent jackson jar in flink server lib folder,
or create a fat jar.
balaji
On Tue, Mar 29, 2016 at 4:47 PM, Bart van Deenen <bartvandee...@fastmail.fm>
wrote:
> Hi all
>
> I've succesfully built a Flink streaming job, and it runs beautifully in
> my IntelliJ ide, with a Flink instance started on the fly. The job eats
> Kafka events, and outputs to file. All the i/o is json encoded with
> Jackson.
>
> But I'm having trouble with deploying the jar on a Flink server
> (version 1.0.0)
> Building the jar via sbt package generates a jar with only my classes in
> it, and the Flink cluster misses some Jackson stuff, and it complains
> when I try to run the jar file.
>
> java.lang.NoClassDefFoundError:
> com/fasterxml/jackson/module/scala/DefaultScalaModule
>
> The build.sbt is pretty much identical to the quick-start:
>
> resolvers in ThisBuild ++= Seq(Resolver.mavenLocal)
> name := "Flink Project"
> version := "0.1-SNAPSHOT"
> organization := "org.example"
> scalaVersion in ThisBuild := "2.11.7"
> val flinkVersion = "1.0.0"
>
> val flinkDependencies = Seq(
> "org.apache.flink" %% "flink-scala" % flinkVersion % "provided",
> "org.apache.flink" %% "flink-streaming-scala" % flinkVersion %
> "provided")
> lazy val root = (project in file(".")).
> settings(
> libraryDependencies ++= flinkDependencies
> )
> libraryDependencies += "org.apache.flink" %
> "flink-connector-kafka-0.9_2.11" % "1.0.0"
> libraryDependencies += "com.fasterxml.jackson.module" %
> "jackson-module-scala_2.11" % "2.4.5"
> mainClass in assembly := Some("com.kpn.cj.journeyengine.Streaming")
>
> // make run command include the provided dependencies
> run in Compile <<= Defaults.runTask(fullClasspath in Compile, mainClass
> in (Compile, run), runner in (Compile, run))
>
> // exclude Scala library from assembly
> assemblyOption in assembly := (assemblyOption in
> assembly).value.copy(includeScala = false)
>
> I'm not a hero as far as Scala Build Tool is concerned, any hints on how
> to make sure the jackson stuff is actually included in the flink job?
>
> Thanks
>
> Bart
>
