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HADOOP-8069. Enable TCP_NODELAY by default for IPC. (Contributed by Todd Lipcon)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1614242 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Arpit Agarwal 2014-07-29 02:55:27 +00:00
parent c6cddce752
commit 260fd25568
3 changed files with 5 additions and 21 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -460,6 +460,9 @@ Release 2.6.0 - UNRELEASED
HADOOP-10882. Move DirectBufferPool into common util. (todd)
HADOOP-8069. Enable TCP_NODELAY by default for IPC. (Todd Lipcon via
Arpit Agarwal)
OPTIMIZATIONS
BUG FIXES

4
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
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@ -207,7 +207,7 @@ public class CommonConfigurationKeysPublic {
public static final String IPC_CLIENT_TCPNODELAY_KEY =
"ipc.client.tcpnodelay";
/** Defalt value for IPC_CLIENT_TCPNODELAY_KEY */
public static final boolean IPC_CLIENT_TCPNODELAY_DEFAULT = false;
public static final boolean IPC_CLIENT_TCPNODELAY_DEFAULT = true;
/** See <a href="{@docRoot}/../core-default.html">core-default.xml</a> */
public static final String IPC_SERVER_LISTEN_QUEUE_SIZE_KEY =
"ipc.server.listen.queue.size";
@ -226,7 +226,7 @@ public class CommonConfigurationKeysPublic {
public static final String IPC_SERVER_TCPNODELAY_KEY =
"ipc.server.tcpnodelay";
/** Default value for IPC_SERVER_TCPNODELAY_KEY */
public static final boolean IPC_SERVER_TCPNODELAY_DEFAULT = false;
public static final boolean IPC_SERVER_TCPNODELAY_DEFAULT = true;
/** See <a href="{@docRoot}/../core-default.html">core-default.xml</a> */
public static final String HADOOP_RPC_SOCKET_FACTORY_CLASS_DEFAULT_KEY =

19
hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
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@ -807,25 +807,6 @@ for ldap providers in the same way as above does.
</description>
</property>
<property>
<name>ipc.server.tcpnodelay</name>
<value>false</value>
<description>Turn on/off Nagle's algorithm for the TCP socket connection on
the server. Setting to true disables the algorithm and may decrease latency
with a cost of more/smaller packets.
</description>
</property>
<property>
<name>ipc.client.tcpnodelay</name>
<value>false</value>
<description>Turn on/off Nagle's algorithm for the TCP socket connection on
the client. Setting to true disables the algorithm and may decrease latency
with a cost of more/smaller packets.
</description>
</property>
<!-- Proxy Configuration -->
<property>