Caused by: com.fasterxml.jackson

Caused by: com.fasterxml.jackson.databind.JsonMappingException: Incompatible Jackson version: 2.9.8
解决：spark 依赖的版本过高 不兼容
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.6.6</version>
</dependency>

如果还有错误 可能其他包也引入了版本过高的依赖，在其中将jackson的自动引入剔除即可
<dependency>
<groupId> org.apache.kafka</groupId>
<artifactId>kafka_2.11</artifactId>
<version>1.1.1</version>
<exclusions>
<exclusion>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>