Github user jerryshao commented on a diff in the pull request:
https://github.com/apache/spark/pull/14065#discussion_r71102254
--- Diff:
yarn/src/main/scala/org/apache/spark/deploy/yarn/security/ConfigurableCredentialManager.scala
---
@@ -0,0 +1,158 @@
+/*
+ * 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.deploy.yarn.security
+
+import java.util.ServiceLoader
+
+import scala.collection.JavaConverters._
+import scala.collection.mutable
+
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.security.Credentials
+
+import org.apache.spark.SparkConf
+import org.apache.spark.internal.Logging
+import org.apache.spark.util.Utils
+
+/**
+ * A ConfigurableCredentialManager to manage all the registered credential
providers and offer
+ * APIs for other modules to obtain credentials as well as renewal time.
By default
+ * [[HDFSCredentialProvider]], [[HiveCredentialProvider]] and
[[HBaseCredentialProvider]] will
+ * be loaded in, any plugged-in credential provider wants to be managed by
+ * ConfigurableCredentialManager needs to implement
[[ServiceCredentialProvider]] interface and put
+ * into resources to be loaded by ServiceLoader.
+ *
+ * Also the specific credential provider is controlled by
+ * spark.yarn.security.credentials.{service}.enabled, it will not be
loaded in if set to false.
+ */
+final class ConfigurableCredentialManager private[yarn] (sparkConf:
SparkConf) extends Logging {
+ private val deprecatedProviderEnabledConfig =
"spark.yarn.security.tokens.%s.enabled"
+ private val providerEnabledConfig =
"spark.yarn.security.credentials.%s.enabled"
+
+ // Maintain all the registered credential providers
+ private val credentialProviders = mutable.HashMap[String,
ServiceCredentialProvider]()
+
+ // Default crendetial providers that will be loaded automatically,
unless specifically disabled.
+ private val defaultCredentialProviders = Map(
--- End diff --
Sorry my fault, it is not necessary now, I will remove it.
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