From 2ee47f02cfd40b0cb9d5a4fd858a9d75aa4b439a Mon Sep 17 00:00:00 2001
From: Kihwal Lee <kihwal@apache.org>
Date: Mon, 3 Oct 2016 09:20:08 -0500
Subject: [PATCH] HDFS-10619. Cache path in InodesInPath. Contributed by Daryn
 Sharp.

(cherry picked from commit 90020624b05230ad4a7fbd666d0177ecb107a4d6)
---
 .../org/apache/hadoop/hdfs/server/namenode/INodesInPath.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java
index 04d3bdab3ca..f05fa377ef8 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodesInPath.java
@@ -278,6 +278,8 @@ public static INodesInPath append(INodesInPath iip, INode child,
   }
 
   private final byte[][] path;
+  private final String pathname;
+
   /**
    * Array with the specified number of INodes resolved for a given path.
    */
@@ -306,6 +308,7 @@ private INodesInPath(INode[] inodes, byte[][] path, boolean isRaw,
     Preconditions.checkArgument(inodes != null && path != null);
     this.inodes = inodes;
     this.path = path;
+    this.pathname = DFSUtil.byteArray2PathString(path);
     this.isRaw = isRaw;
     this.isSnapshot = isSnapshot;
     this.snapshotId = snapshotId;
@@ -366,7 +369,7 @@ public byte[] getPathComponent(int i) {
 
   /** @return the full path in string form */
   public String getPath() {
-    return DFSUtil.byteArray2PathString(path);
+    return pathname;
   }
 
   public String getParentPath() {