代码里面使用比较老的jackson包，hadoop 2.6.0-cdh5.7.6 环境下编译失败（The old Jackson package is used in the code）

**Is your feature request related to a problem? Please describe.**

代码中使用了 org.codehaus.jackson.JsonNode 等比较老的包，在 hadoop 2.6.0-cdh5.7.6 中依赖 jackson-core-asl 的版本是 1.8.8，该版本中 JsonNode 没有 asText 方法，导致部分模块编译出错。



**Describe the solution you'd like**

建议使用 com.fasterxml.jackson.core 的 jackson 包



**Describe alternatives you've considered**

no



**Additional context**

no



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**Is your feature request related to a problem? Please describe.**

Some older packages such as org.codehaus.jackson.JsonNode are used in the code. The version that relies on jackson-core-asl in Hadoop 2.6.0-cdh5.7.6 is 1.8.8. In this version, JsonNode has no astext method, resulting in some module compilation errors.



**Describe the solution you'd like**

The Jackson package of com.fasterxml.jackson.core is recommended



**Describe alternatives you've considered**

no



**Additional context**

no

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