Github user wangyum commented on the issue:
https://github.com/apache/spark/pull/22372
I did a simple test for 2.9.6. It works well. But that pr for 3.0. It means
that a simple test on branch 2.4 will fail:
```scala
scala> spark.range(10).write.parquet("/tmp/spark/parquet")
com.fasterxml.jackson.databind.JsonMappingException: Incompatible Jackson
version: 2.7.8
at
com.fasterxml.jackson.module.scala.JacksonModule$class.setupModule(JacksonModule.scala:64)
at
com.fasterxml.jackson.module.scala.DefaultScalaModule.setupModule(DefaultScalaModule.scala:19)
at
com.fasterxml.jackson.databind.ObjectMapper.registerModule(ObjectMapper.java:730)
at
org.apache.spark.rdd.RDDOperationScope$.<init>(RDDOperationScope.scala:82)
at
org.apache.spark.rdd.RDDOperationScope$.<clinit>(RDDOperationScope.scala)
```
How about merge this pr to branch-2.4 only?
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