Github user revans2 commented on a diff in the pull request:
https://github.com/apache/incubator-storm/pull/190#discussion_r15085803
--- Diff:
storm-core/src/jvm/backtype/storm/security/auth/kerberos/AutoHDFS.java ---
@@ -0,0 +1,298 @@
+/**
+ * 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 backtype.storm.security.auth.kerberos;
+
+import backtype.storm.Config;
+import backtype.storm.security.auth.IAutoCredentials;
+import backtype.storm.security.auth.ICredentialsRenewer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.security.auth.Subject;
+import javax.xml.bind.DatatypeConverter;
+import java.io.*;
+import java.lang.reflect.Method;
+import java.net.URI;
+import java.util.Collection;
+import java.util.Map;
+
+/**
+ * Automatically get HDFS delegation tokens and push it to user's
topology. The class
+ * assumes that HDFS configuration files are in your class path.
+ */
+public class AutoHDFS implements IAutoCredentials, ICredentialsRenewer {
+ private static final Logger LOG =
LoggerFactory.getLogger(AutoHDFS.class);
+ public static final String HDFS_CREDENTIALS = "HDFS_CREDENTIALS";
+ private static final String CONF_KEYTAB_KEY = "keytab";
+ private static final String CONF_USER_KEY = "user";
+
+ private Map conf;
+
+ public void prepare(Map conf) {
+ this.conf = conf;
+ }
+
+ @SuppressWarnings("unchecked")
+ private Object getConfiguration() {
--- End diff --
I think I would rather have hdfs-site.xml be configured properly rather
then trying to have storm know enough about Hadoop configuration to make it
work. Configuring Hadoop is a real pain, and I think this will just end up
being a losing battle.
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