turboFei commented on a change in pull request #25863:
[WIP][SPARK-29037][CORE][SQL] For static partition overwrite, spark may give
duplicate result.
URL: https://github.com/apache/spark/pull/25863#discussion_r327997706
##########
File path:
core/src/main/scala/org/apache/spark/internal/io/FileCommitProtocol.scala
##########
@@ -169,4 +183,55 @@ object FileCommitProtocol extends Logging {
ctor.newInstance(jobId, outputPath)
}
}
+
+ /**
+ * Invoke a method from the Class of instance or from its superclasses.
+ */
+ private def invokeMethod(
+ instance: Any,
+ methodName: String,
+ argTypes: Seq[Class[_]],
+ params: Seq[AnyRef]): Any = {
+ var clazz: Class[_ <: Any] = instance.getClass
+ while (clazz != null) {
+ try {
+ val method = clazz.getDeclaredMethod(methodName, argTypes: _*)
+ method.setAccessible(true)
+ val r = method.invoke(instance, params: _*)
+ method.setAccessible(false)
+ return r
+ } catch {
+ case _: NoSuchMethodException =>
+ logDebug(s"Can not get $methodName method from $clazz, try to get
from its superclass:" +
+ s" ${clazz.getSuperclass}")
+ clazz = clazz.getSuperclass
+ }
+ }
+ throw new NoSuchMethodException(s"Can not get $methodName method from
${instance.getClass}" +
+ s" and its superclasses")
+ }
+
+ /**
+ * Invoke the `mergePaths` method of a FileOutputCommitter instance.
+ */
+ @throws[IOException]
+ def mergePaths(
+ committer: FileOutputCommitter,
+ fs: FileSystem,
+ from: FileStatus,
+ to: Path,
+ context: JobContext): Unit = {
+ try {
+ invokeMethod(committer, "mergePaths", Seq(classOf[FileSystem],
classOf[FileStatus],
+ classOf[Path]),
+ Seq(fs, from, to))
Review comment:
thanks
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