HDFS-13786. EC: Display erasure coding policy for sub-directories is not working. Contributed by Ayush Saxena.

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 "

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 {