From b3f29e3504ee1f4cd371265bab2810fadf38877e Mon Sep 17 00:00:00 2001
From: Vinayakumar B <vinayakumarb@apache.org>
Date: Wed, 8 Aug 2018 07:47:10 +0530
Subject: [PATCH] HDFS-13786. EC: Display erasure coding policy for
 sub-directories is not working. Contributed by Ayush Saxena.

(cherry picked from commit 2b0f9772417d205e8df16bac6921c2bb8bdcf740)
---
 .../namenode/ContentSummaryComputationContext.java |  2 ++
 .../hadoop/hdfs/TestErasureCodingPolicies.java     | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ContentSummaryComputationContext.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ContentSummaryComputationContext.java
index c81f82cde32..95f3fee34d8 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ContentSummaryComputationContext.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ContentSummaryComputationContext.java
@@ -191,6 +191,8 @@ public class ContentSummaryComputationContext {
               .getEnabledPolicyByName(ecPolicyName)
               .getName();
         }
+      } else if (inode.getParent() != null) {
+          return getErasureCodingPolicyName(inode.getParent());
       }
     } catch (IOException ioe) {
       LOG.warn("Encountered error getting ec policy for "
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingPolicies.java b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingPolicies.java
index 0b7d25932d5..5c703c1723b 100644
--- a/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingPolicies.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestErasureCodingPolicies.java
@@ -19,6 +19,7 @@ package org.apache.hadoop.hdfs;
 
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
+import org.apache.hadoop.fs.ContentSummary;
 import org.apache.hadoop.fs.CreateFlag;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
@@ -153,6 +154,19 @@ public class TestErasureCodingPolicies {
     assertNotNull(files[1].getErasureCodingPolicy());
   }
 
+  @Test
+  public void testContentSummaryOfECSubdir() throws IOException {
+    final Path testDir = new Path("/ec");
+    fs.mkdir(testDir, FsPermission.getDirDefault());
+    fs.setErasureCodingPolicy(testDir, ecPolicy.getName());
+    final Path fPath = new Path("ec/file");
+    fs.create(fPath).close();
+    final Path subdir = new Path("/ec/sub");
+    fs.mkdir(subdir, FsPermission.getDirDefault());
+    ContentSummary contentSummary = fs.getContentSummary(subdir);
+    assertEquals(ecPolicy.getName(),contentSummary.getErasureCodingPolicy());
+  }
+
   @Test
   public void testBasicSetECPolicy()
       throws IOException, InterruptedException {