omalley commented on a change in pull request #4081:
URL: https://github.com/apache/hadoop/pull/4081#discussion_r830257443
##########
File path:
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeRpcServer.java
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@@ -59,5 +74,67 @@ public void testNamenodeRpcBindAny() throws IOException {
conf.unset(DFS_NAMENODE_RPC_BIND_HOST_KEY);
}
}
+
+ /**
+ * A test to make sure that if an authorized user adds "clientIp:" to their
+ * caller context, it will be used to make locality decisions on the NN.
+ */
+ @Test
+ public void testNamenodeRpcClientIpProxy()
+ throws InterruptedException, IOException {
+ Configuration conf = new HdfsConfiguration();
+
+ conf.set(DFS_NAMENODE_IP_PROXY_USERS, "fake_joe");
+ // Make 3 nodes & racks so that we have a decent shot of detecting when
+ // our change overrides the random choice of datanode.
+ final String[] racks = new String[]{"/rack1", "/rack2", "/rack3"};
+ final String[] hosts = new String[]{"node1", "node2", "node3"};
+ MiniDFSCluster cluster = null;
+ final CallerContext original = CallerContext.getCurrent();
+
+ try {
+ cluster = new MiniDFSCluster.Builder(conf)
+ .racks(racks).hosts(hosts).numDataNodes(hosts.length)
+ .build();
+ cluster.waitActive();
+ DistributedFileSystem fs = cluster.getFileSystem();
+ // Write a sample file
+ final Path fooName = fs.makeQualified(new Path("/foo"));
Review comment:
Because I wanted to make sure that we always get the same file system,
but with joe as the user, when we make joeFs down below.
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