Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/3670#discussion_r23972230
--- Diff: core/src/test/scala/org/apache/spark/SparkContextSuite.scala ---
@@ -72,4 +74,87 @@ class SparkContextSuite extends FunSuite with
LocalSparkContext {
val byteArray2 = converter.convert(bytesWritable)
assert(byteArray2.length === 0)
}
+
+ test("addFile works") {
+ val file = new File("somefile")
+ val absolutePath = file.getAbsolutePath
+ try {
+ val pw = new PrintWriter(file)
+ pw.print("somewords")
+ pw.close()
+ val length = file.length()
+ sc = new SparkContext(new
SparkConf().setAppName("test").setMaster("local"))
+ sc.addFile(file.getAbsolutePath)
+ sc.parallelize(Array(1), 1).map(x => {
+ val gotten = new File(SparkFiles.get(file.getName))
--- End diff --
AFAIK you can serialize `File` instances:
```scala
scala> import java.io.File
import java.io.File
scala> import org.apache.commons.lang3.SerializationUtils
import org.apache.commons.lang3.SerializationUtils
scala> SerializationUtils.serialize(new File("/usr/share/dict/words"))
res1: Array[Byte] = Array(-84, -19, 0, 5, 115, 114, 0, 12, 106, 97, 118,
97, 46, 105, 111, 46, 70, 105, 108, 101, 4, 45, -92, 69, 14, 13, -28, -1, 3, 0,
1, 76, 0, 4, 112, 97, 116, 104, 116, 0, 18, 76, 106, 97, 118, 97, 47, 108, 97,
110, 103, 47, 83, 116, 114, 105, 110, 103, 59, 120, 112, 116, 0, 21, 47, 117,
115, 114, 47, 115, 104, 97, 114, 101, 47, 100, 105, 99, 116, 47, 119, 111, 114,
100, 115, 119, 2, 0, 47, 120)
```
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