fix in mkdir

Change-Id: Icd30c23f5606431bbdbd690f52adec30453ee19d
apache · Sep 19, 2019 · 17df4f0 · 17df4f0
1 parent 4a6d788
commit 17df4f0
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Mkdir.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Mkdir.java
@@ -73,6 +73,13 @@ protected void processNonexistentPath(PathData item) throws IOException {
       // we want a/b
       final Path itemPath = new Path(item.path.toString());
       final Path itemParentPath = itemPath.getParent();
+
+      if(itemParentPath == null) {
+        throw new PathNotFoundException(String.format(
+            "Item: %s parent path's is null. This can happen if mkdir is " +
+                "called on root, so there's no parent.", itemPath.toString()));
+      }
+
       if (!item.fs.exists(itemParentPath)) {
         throw new PathNotFoundException(itemParentPath.toString());
       }