HDFS-15942. Increase Quota initialization threads. Contributed by Stephen O'Donnell.
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 ac28968..51fc564 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 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 c2ae4bc..a30889b 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>
