From 459df4199791a9093324e089b4a5cc880be8d6ff Mon Sep 17 00:00:00 2001
From: He Xiaoqiao <hexiaoqiao@apache.org>
Date: Tue, 6 Apr 2021 21:22:48 +0800
Subject: [PATCH] HDFS-15942. Increase Quota initialization threads.
 Contributed by Stephen O'Donnell.

---
 .../src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java   | 2 +-
 .../hadoop-hdfs/src/main/resources/hdfs-default.xml           | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
index ac2896871e..51fc564a97 100755
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
@@ -374,7 +374,7 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
   public static final String  DFS_NAMENODE_EDITS_DIR_MINIMUM_KEY = "dfs.namenode.edits.dir.minimum";
   public static final int     DFS_NAMENODE_EDITS_DIR_MINIMUM_DEFAULT = 1;
   public static final String  DFS_NAMENODE_QUOTA_INIT_THREADS_KEY = "dfs.namenode.quota.init-threads";
-  public static final int     DFS_NAMENODE_QUOTA_INIT_THREADS_DEFAULT = 4;
+  public static final int     DFS_NAMENODE_QUOTA_INIT_THREADS_DEFAULT = 12;
 
   public static final String  DFS_NAMENODE_EDIT_LOG_AUTOROLL_MULTIPLIER_THRESHOLD = "dfs.namenode.edit.log.autoroll.multiplier.threshold";
   public static final float
diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
index c2ae4bc829..a30889bdd0 100755
--- a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
+++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
@@ -3735,11 +3735,11 @@
 
 <property>
   <name>dfs.namenode.quota.init-threads</name>
-  <value>4</value>
+  <value>12</value>
   <description>
     The number of concurrent threads to be used in quota initialization. The
     speed of quota initialization also affects the namenode fail-over latency.
-    If the size of name space is big, try increasing this.
+    If the size of name space is big, try increasing this to 16 or higher.
   </description>
 </property>