[SPARK-25786][CORE] If the ByteBuffer.hasArray is false , it will thr…

…ow UnsupportedOperationException for Kryo ## What changes were proposed in this pull request? `deserialize` for kryo, the type of input parameter is ByteBuffer, if it is not backed by an accessible byte array. it will throw `UnsupportedOperationException` Exception Info: ``` java.lang.UnsupportedOperationException was thrown. java.lang.UnsupportedOperationException at java.nio.ByteBuffer.array(ByteBuffer.java:994) at org.apache.spark.serializer.KryoSerializerInstance.deserialize(KryoSerializer.scala:362) ``` ## How was this patch tested? Added a unit test Closes #22779 from 10110346/InputStreamKryo. Authored-by: liuxian <[email protected]> Signed-off-by: Sean Owen <[email protected]>
apache · Nov 24, 2018 · 7f5f7a9 · 7f5f7a9
1 parent de84899
commit 7f5f7a9
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diff --git a/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala b/core/src/main/scala/org/apache/spark/serializer/KryoSerializer.scala
@@ -42,7 +42,7 @@ import org.apache.spark.internal.Logging
 import org.apache.spark.network.util.ByteUnit
 import org.apache.spark.scheduler.{CompressedMapStatus, HighlyCompressedMapStatus}
 import org.apache.spark.storage._
-import org.apache.spark.util.{BoundedPriorityQueue, SerializableConfiguration, SerializableJobConf, Utils}
+import org.apache.spark.util.{BoundedPriorityQueue, ByteBufferInputStream, SerializableConfiguration, SerializableJobConf, Utils}
 import org.apache.spark.util.collection.CompactBuffer
 
 /**
@@ -417,7 +417,12 @@ private[spark] class KryoSerializerInstance(
   override def deserialize[T: ClassTag](bytes: ByteBuffer): T = {
     val kryo = borrowKryo()
     try {
-      input.setBuffer(bytes.array(), bytes.arrayOffset() + bytes.position(), bytes.remaining())
+      if (bytes.hasArray) {
+        input.setBuffer(bytes.array(), bytes.arrayOffset() + bytes.position(), bytes.remaining())
+      } else {
+        input.setBuffer(new Array[Byte](4096))
+        input.setInputStream(new ByteBufferInputStream(bytes))
+      }
       kryo.readClassAndObject(input).asInstanceOf[T]
     } finally {
       releaseKryo(kryo)
@@ -429,7 +434,12 @@ private[spark] class KryoSerializerInstance(
     val oldClassLoader = kryo.getClassLoader
     try {
       kryo.setClassLoader(loader)
-      input.setBuffer(bytes.array(), bytes.arrayOffset() + bytes.position(), bytes.remaining())
+      if (bytes.hasArray) {
+        input.setBuffer(bytes.array(), bytes.arrayOffset() + bytes.position(), bytes.remaining())
+      } else {
+        input.setBuffer(new Array[Byte](4096))
+        input.setInputStream(new ByteBufferInputStream(bytes))
+      }
       kryo.readClassAndObject(input).asInstanceOf[T]
     } finally {
       kryo.setClassLoader(oldClassLoader)

diff --git a/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala b/core/src/test/scala/org/apache/spark/serializer/KryoSerializerSuite.scala
@@ -18,6 +18,7 @@
 package org.apache.spark.serializer
 
 import java.io.{ByteArrayInputStream, ByteArrayOutputStream, FileInputStream, FileOutputStream}
+import java.nio.ByteBuffer
 import java.util.concurrent.Executors
 
 import scala.collection.JavaConverters._
@@ -551,6 +552,17 @@ class KryoSerializerAutoResetDisabledSuite extends SparkFunSuite with SharedSpar
     deserializationStream.close()
     assert(serInstance.deserialize[Any](helloHello) === ((hello, hello)))
   }
+
+  test("SPARK-25786: ByteBuffer.array -- UnsupportedOperationException") {
+    val serInstance = new KryoSerializer(conf).newInstance().asInstanceOf[KryoSerializerInstance]
+    val obj = "UnsupportedOperationException"
+    val serObj = serInstance.serialize(obj)
+    val byteBuffer = ByteBuffer.allocateDirect(serObj.array().length)
+    byteBuffer.put(serObj.array())
+    byteBuffer.flip()
+    assert(serInstance.deserialize[Any](serObj) === (obj))
+    assert(serInstance.deserialize[Any](byteBuffer) === (obj))
+  }
 }
 
 class ClassLoaderTestingObject