KAFKA STREAM: UnsatisfiedLinkError on Lib Rocks DB

Question

I'm trying out Word Count problem with kafka streams. I am using Kafka 1.1.0 with scala version 2.11.12 and sbt version 1.1.4. I am getting following error:

Exception in thread "wordcount-application-d81ee069-9307-46f1-8e71-c9f777d2db64-StreamThread-1" java.lang.UnsatisfiedLinkError: C:\Users\user\AppData\Local\Temp\librocksdbjni5439068356048679315.dll: À¦¥Y
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
at java.lang.Runtime.load0(Runtime.java:809)
at java.lang.System.load(System.java:1086)
at org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)
at org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)
at org.rocksdb.RocksDB.loadLibrary(RocksDB.java:64)
at org.rocksdb.RocksDB.<clinit>(RocksDB.java:35)
at org.rocksdb.Options.<clinit>(Options.java:25)
at org.apache.kafka.streams.state.internals.RocksDBStore.openDB(RocksDBStore.java:116)
at org.apache.kafka.streams.state.internals.RocksDBStore.init(RocksDBStore.java:167)
at org.apache.kafka.streams.state.internals.ChangeLoggingKeyValueBytesStore.init(ChangeLoggingKeyValueBytesStore.java:40)
at org.apache.kafka.streams.state.internals.CachingKeyValueStore.init(CachingKeyValueStore.java:63)
at org.apache.kafka.streams.state.internals.InnerMeteredKeyValueStore.init(InnerMeteredKeyValueStore.java:160)
at org.apache.kafka.streams.state.internals.MeteredKeyValueBytesStore.init(MeteredKeyValueBytesStore.java:102)
at org.apache.kafka.streams.processor.internals.AbstractTask.registerStateStores(AbstractTask.java:225)
at org.apache.kafka.streams.processor.internals.StreamTask.initializeStateStores(StreamTask.java:162)
at org.apache.kafka.streams.processor.internals.AssignedTasks.initializeNewTasks(AssignedTasks.java:88)
at org.apache.kafka.streams.processor.internals.TaskManager.updateNewAndRestoringTasks(TaskManager.java:316)
at org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:789)
at org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:750)
at org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:720)

I already tried solution given here UnsatisfiedLinkError on Lib rocks DB dll when developing with Kafka Streams .

Here is the code that i am trying out in scala.

object WordCountApplication {

  def main(args: Array[String]) {
    val config: Properties = {
      val p = new Properties()
      p.put(StreamsConfig.APPLICATION_ID_CONFIG, "wordcount-application")
      p.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092")
      p.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass)
      p.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.String().getClass)
      p
    }

    val builder: StreamsBuilder = new StreamsBuilder()
    val textLines: KStream[String, String] = builder.stream("streams-plaintext-input")

    val afterFlatMap: KStream[String, String] = textLines.flatMapValues(new ValueMapper[String,java.lang.Iterable[String]] {
      override def apply(value: String): lang.Iterable[String] = value.split("\\W+").toIterable.asJava
    })

    val afterGroupBy: KGroupedStream[String, String] = afterFlatMap.groupBy(new KeyValueMapper[String,String,String] {
      override def apply(key: String, value: String): String = value
    })


    val wordCounts: KTable[String, Long] = afterGroupBy
      .count(Materialized.as("counts-store").asInstanceOf[Materialized[String, Long, KeyValueStore[Bytes, Array[Byte]]]])
    wordCounts.toStream().to("streams-wordcount-output ", Produced.`with`(Serdes.String(), Serdes.Long()))

    val streams: KafkaStreams = new KafkaStreams(builder.build(), config)
    streams.start()

    Runtime.getRuntime.addShutdownHook(new Thread(
      new Runnable{
        override def run() = streams.close(10, TimeUnit.SECONDS)}
    ))
  }
}

Build.sbt

name := "KafkaStreamDemo"

version := "0.1"

scalaVersion := "2.11.12"

libraryDependencies ++= Seq(
  "org.apache.kafka" %% "kafka" % "1.1.0",
  "org.apache.kafka" % "kafka-clients" % "1.1.0",
  "org.apache.kafka" % "kafka-streams" % "1.1.0",
  "ch.qos.logback" % "logback-classic" % "1.2.3"
)

If anyone has faced such problem, kindly help.

Answer 1

Finally, I found answer which works. I followed Unable to load rocksdbjni.

I did two things which worked for me.

1) I installed Visual C++ Redistributable for Visual Studio 2015.

2) Earlier, i was using rocksdb 5.7.3 with kafka-streams 1.1.0(rocksdb 5.7.3 comes by default with kafka-streams 1.1.0). I excluded rocksdb dependency from kafka-streams dependency and installed rocksdb 5.3.6. For reference, below is my built.sbt right now.

name := "KafkaStreamDemo"

version := "0.1"

scalaVersion := "2.12.5"

libraryDependencies ++= Seq(

  "org.apache.kafka" %% "kafka" % "1.1.0",
  "org.apache.kafka" % "kafka-clients" % "1.1.0",
  "org.apache.kafka" % "kafka-streams" % "1.1.0" exclude("org.rocksdb","rocksdbjni"),
  "ch.qos.logback" % "logback-classic" % "1.2.3",
  "org.rocksdb" % "rocksdbjni" % "5.3.6"

)

Hope, it helps someone.

Thanks