LuciferYang commented on pull request #30924:
URL: https://github.com/apache/spark/pull/30924#issuecomment-751576466
```
class SequenceFileRDDFunctions[K, V](
self: RDD[(K, V)], self: RDD[(K, V)],
_keyWritableClass: Class[_ <: Writable], _keyWritableClass: Class[_
<: Writable],
_valueWritableClass: Class[_ <: Writable])
_valueWritableClass: Class[_ <: Writable])
(implicit ev$1: K => Writable, ev$2: V => Writable, ev$3: ClassTag[K],
ev$4: ClassTag[V])
```
also break MIMA test.
```
[error] spark-core: Failed binary compatibility check against
org.apache.spark:spark-core_2.12:3.0.0! Found 1 potential problems (filtered
1109)
[error] * method
this(org.apache.spark.rdd.RDD,java.lang.Class,java.lang.Class,scala.Function1,scala.reflect.ClassTag,scala.Function1,scala.reflect.ClassTag)Unit
in class org.apache.spark.rdd.SequenceFileRDDFunctions's type is different in
current version, where it is
(org.apache.spark.rdd.RDD,java.lang.Class,java.lang.Class,scala.Function1,scala.Function1,scala.reflect.ClassTag,scala.reflect.ClassTag)Unit
instead of
(org.apache.spark.rdd.RDD,java.lang.Class,java.lang.Class,scala.Function1,scala.reflect.ClassTag,scala.Function1,scala.reflect.ClassTag)Unit
[error] filter with:
ProblemFilters.exclude[IncompatibleMethTypeProblem]("org.apache.spark.rdd.SequenceFileRDDFunctions.this")
```
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