HDFS-10916. Switch from "raw" to "system" xattr namespace for erasure coding policy. (Andrew Wang via lei)

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/HdfsServerConstants.java

@@ -369,7 +369,7 @@ public interface HdfsServerConstants {
   String SECURITY_XATTR_UNREADABLE_BY_SUPERUSER =
       "security.hdfs.unreadable.by.superuser";
   String XATTR_ERASURECODING_POLICY =
-      "raw.hdfs.erasurecoding.policy";
+      "system.hdfs.erasurecoding.policy";
 
   long BLOCK_GROUP_INDEX_MASK = 15;
   byte MAX_BLOCKS_IN_GROUP = 16;