Github user winningsix commented on a diff in the pull request:
https://github.com/apache/spark/pull/8880#discussion_r41605310
--- Diff: core/src/main/scala/org/apache/spark/crypto/CryptoConf.scala ---
@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.spark.crypto
+
+import java.security.NoSuchAlgorithmException
+import javax.crypto.KeyGenerator
+
+import org.apache.hadoop.security.Credentials
+
+import org.apache.spark.SparkConf
+import org.apache.spark.crypto.CommonConfigurationKeys._
+
+/**
+ * CryptoConf is a class for Crypto configuration
+ */
+private[spark] object CryptoConf {
+ def isShuffleEncryted(sparkConf: SparkConf): Boolean = {
+ if (sparkConf != null) {
+ sparkConf.getBoolean(SPARK_ENCRYPTED_SHUFFLE, false)
+ } else {
+ false
+ }
+ }
+
+ def initSparkShuffleCredentials(conf: SparkConf, credentials:
Credentials) {
--- End diff --
Is this case possible that user is using the old client to submit a new job
to a cluster with encryption enabled in Spark? I see hadoop mr is initializing
the credentials on both sides. If you think no need for two calls, we can just
add this method in server side which can guarantee encryption is working.
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