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The following commit(s) were added to refs/heads/trunk by this push:
     new 5882cf9  HADOOP-16504. Increase ipc.server.listen.queue.size default 
from 128 to 256. Contributed by Lisheng Sun.
5882cf9 is described below

commit 5882cf94ea5094626eb86ff7ac7f8cd32aacb139
Author: Wei-Chiu Chuang <weic...@apache.org>
AuthorDate: Thu Aug 15 15:20:54 2019 -0700

    HADOOP-16504. Increase ipc.server.listen.queue.size default from 128 to 
256. Contributed by Lisheng Sun.
---
 .../main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java   | 2 +-
 hadoop-common-project/hadoop-common/src/main/resources/core-default.xml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git 
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
 
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
index b24ce9e..a68012b 100644
--- 
a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
+++ 
b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
@@ -417,7 +417,7 @@ public class CommonConfigurationKeysPublic {
   public static final String  IPC_SERVER_LISTEN_QUEUE_SIZE_KEY =
     "ipc.server.listen.queue.size";
   /** Default value for IPC_SERVER_LISTEN_QUEUE_SIZE_KEY */
-  public static final int     IPC_SERVER_LISTEN_QUEUE_SIZE_DEFAULT = 128;
+  public static final int     IPC_SERVER_LISTEN_QUEUE_SIZE_DEFAULT = 256;
   /**
    * @see
    * <a 
href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
diff --git 
a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml 
b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
index 194a0cd..05bba0e 100644
--- a/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
+++ b/hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
@@ -2196,7 +2196,7 @@
 
 <property>
   <name>ipc.server.listen.queue.size</name>
-  <value>128</value>
+  <value>256</value>
   <description>Indicates the length of the listen queue for servers accepting
                client connections.
   </description>


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