HDFS-16753. WebHDFSHandler should reject non-compliant requests

Make a non-null nnId a precondition for creating a DFSClient.
apache · Feb 21, 2023 · 38af11a · 38af11a
1 parent 4e6e2f3
commit 38af11a
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/...hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/WebHdfsHandler.java b/...hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/WebHdfsHandler.java
@@ -330,6 +330,7 @@ private static void writeContinueHeader(ChannelHandlerContext ctx) {
 
   private static DFSClient newDfsClient
     (String nnId, Configuration conf) throws IOException {
+    Preconditions.checkArgument(nnId != null);
     URI uri = URI.create(HDFS_URI_SCHEME + "://" + nnId);
     return new DFSClient(uri, conf);
   }