Zeppelin + Spark: Reading Parquet from S3 throws NoSuchMethodError: com.fasterxml.jackson

Question

使用主要下载的 Zeppelin 0.7.2 二进制文件和 Spark 2.1.0 w/ Hadoop 2.6，以下段落：

val df = spark.read.parquet(DATA_URL).filter(FILTER_STRING).na.fill("")

生成以下内容：

java.lang.NoSuchMethodError: com.fasterxml.jackson.module.scala.deser.BigDecimalDeserializer$.handledType()Ljava/lang/Class;
  at com.fasterxml.jackson.module.scala.deser.NumberDeserializers$.<init>(ScalaNumberDeserializersModule.scala:49)
  at com.fasterxml.jackson.module.scala.deser.NumberDeserializers$.<clinit>(ScalaNumberDeserializersModule.scala)
  at com.fasterxml.jackson.module.scala.deser.ScalaNumberDeserializersModule$class.$init$(ScalaNumberDeserializersModule.scala:61)
  at com.fasterxml.jackson.module.scala.DefaultScalaModule.<init>(DefaultScalaModule.scala:20)
  at com.fasterxml.jackson.module.scala.DefaultScalaModule$.<init>(DefaultScalaModule.scala:37)
  at com.fasterxml.jackson.module.scala.DefaultScalaModule$.<clinit>(DefaultScalaModule.scala)
  at org.apache.spark.rdd.RDDOperationScope$.<init>(RDDOperationScope.scala:82)
  at org.apache.spark.rdd.RDDOperationScope$.<clinit>(RDDOperationScope.scala)
  at org.apache.spark.SparkContext.withScope(SparkContext.scala:701)
  at org.apache.spark.SparkContext.parallelize(SparkContext.scala:715)
  at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$.mergeSchemasInParallel(ParquetFileFormat.scala:594)
  at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat.inferSchema(ParquetFileFormat.scala:235)
  at org.apache.spark.sql.execution.datasources.DataSource$$anonfun.apply(DataSource.scala:184)
  at org.apache.spark.sql.execution.datasources.DataSource$$anonfun.apply(DataSource.scala:184)
  at scala.Option.orElse(Option.scala:289)
  at org.apache.spark.sql.execution.datasources.DataSource.org$apache$spark$sql$execution$datasources$DataSource$$getOrInferFileFormatSchema(DataSource.scala:183)
  at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:387)
  at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:152)
  at org.apache.spark.sql.DataFrameReader.parquet(DataFrameReader.scala:441)
  at org.apache.spark.sql.DataFrameReader.parquet(DataFrameReader.scala:425)
  ... 47 elided

这个错误不会出现在普通的spark-shell中，只会出现在Zeppelin中。我尝试了以下修复，但没有任何作用：

将 jackson 2.6.2 jar 下载到 zeppelin lib 文件夹并重新启动
将 jackson 2.9 依赖项从 maven 存储库添加到解释器设置
正在从 zeppelin lib 文件夹中删除 jackson jars

谷歌搜索没有发现类似情况。请不要犹豫，询问更多信息，或提出建议。谢谢！

Answer 1

另一种方法是将其直接包含在笔记本单元格中：

%dep
z.load("com.fasterxml.jackson.core:jackson-core:2.6.2")

Answer 2

我遇到了同样的问题。我添加了 com.amazonaws:aws-java-sdk 和 org.apache.hadoop:hadoop-aws 作为 Spark 解释器的依赖项。这些依赖项引入了它们自己的 com.fasterxml.jackson.core:* 版本并与 Spark 的相冲突。

您还必须从其他依赖项中排除 com.fasterxml.jackson.core:*，这是一个示例 ${ZEPPELIN_HOME}/conf/interpreter.json Spark 解释器依赖项部分：

"dependencies": [ { "groupArtifactVersion": "com.amazonaws:aws-java-sdk:1.7.4", "local": false, "exclusions": ["com.fasterxml.jackson.core:*"] }, { "groupArtifactVersion": "org.apache.hadoop:hadoop-aws:2.7.1", "local": false, "exclusions": ["com.fasterxml.jackson.core:*"] } ]

Zeppelin + Spark: Reading Parquet from S3 throws NoSuchMethodError: com.fasterxml.jackson

Zeppelin + Spark: Reading Parquet from S3 throws NoSuchMethodError: com.fasterxml.jackson

apache-spark

apache-zeppelin