1、问题描述:
运行官网文档中Spark Streaming 读取socket流 实例代码报错:
环境为kafka 0.9 + Spark 2.4
Caused by: java.lang.NoSuchMethodError: net.jpountz.lz4.LZ4BlockInputStream.<init>(Ljava/io/InputStream;Z)V
at org.apache.spark.io.LZ4CompressionCodec.compressedInputStream(CompressionCodec.scala:122)
at org.apache.spark.serializer.SerializerManager.wrapForCompression(SerializerManager.scala:163)
at org.apache.spark.serializer.SerializerManager.wrapStream(SerializerManager.scala:124)
at org.apache.spark.shuffle.BlockStoreShuffleReader$$anonfun$3.apply(BlockStoreShuffleReader.scala:50)
at org.apache.spark.shuffle.BlockStoreShuffleReader$$anonfun$3.apply(BlockStoreShuffleReader.scala:50)
2、原因
net.jpountz.lz4 主要是这个依赖冲突导致的
kafka 0.9中是1.2版本的,而Spark中是1.3版本的