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From yus...@apache.org
Subject svn commit: r1487690 [17/38] - in /incubator/ambari/site/1.2.3: ./ installing-hadoop-using-ambari/ installing-hadoop-using-ambari/common/ installing-hadoop-using-ambari/common/css/ installing-hadoop-using-ambari/common/images/ installing-hadoop-using-a...
Date Thu, 30 May 2013 00:34:44 GMT
Added: incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-6.html
URL: http://svn.apache.org/viewvc/incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-6.html?rev=1487690&view=auto
==============================================================================
--- incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-6.html (added)
+++ incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-6.html Thu May 30 00:34:39 2013
@@ -0,0 +1,453 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html
+  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:exsl="http://exslt.org/common" xmlns:ng="http://docbook.org/docbook-ng"
+      xmlns:fb="http://ogp.me/ns/fb#">
+<head>
+  <meta http-equiv="X-UA-Compatible" content="IE=7"/>
+  <title>7. Assign Slaves and Clients - Apache Ambari
+  </title>
+  <meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/>
+  <meta name="mavenGroupId" content="ambari"/>
+  <meta name="mavenArtifactId" content="ambari"/>
+  <meta name="mavenVersionId" content="1.3.0"/>
+  <link rel="home" href="index.html" title="Apache Ambari"/>
+  <link rel="up" href="ambari-chap3.html" title="Chapter 3. Installing, Configuring, and Deploying the Cluster"/>
+  <link rel="prev" href="ambari-chap3-5.html" title="6. Assign Masters"/>
+  <link rel="next" href="ambari-chap3-7.html" title="8. Customize Services"/>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+  <script type="text/javascript">
+    //The id for tree cookie
+    var treeCookieId = "treeview-4022";
+    var language = "en";
+    var w = new Object();
+    //Localization
+    txt_filesfound = 'Results';
+    txt_enter_at_least_1_char = "You must enter at least one character.";
+    txt_browser_not_supported = "Your browser is not supported. Use of Mozilla Firefox is recommended.";
+    txt_please_wait = "Please wait. Search in progress...";
+    txt_results_for = "Results for: ";
+  </script>
+  <style type="text/css">
+    input {
+      margin-bottom: 5px;
+      margin-top: 2px;
+    }
+
+    .folder {
+      display: block;
+      height: 22px;
+      padding-left: 20px;
+      background: transparent url(../common/jquery/treeview/images/folder.gif) 0 0px no-repeat;
+    }
+
+  </style>
+  <link rel="shortcut icon" href="../favicon.ico" type="image/x-icon"/>
+  <link rel="stylesheet" type="text/css" href="../common/css/positioning.css"/>
+  <link rel="stylesheet" type="text/css" href="../common/css/custom.css"/>
+  <!--[if IE]>
+  <link rel="stylesheet" type="text/css" href="../common/css/ie.css"/>
+  <![endif]-->
+  <link rel="stylesheet" type="text/css" href="../common/jquery/theme-redmond/jquery-ui-1.8.2.custom.css"/>
+  <link rel="stylesheet" type="text/css" href="../common/jquery/treeview/jquery.treeview.css"/>
+  <script type="text/javascript" src="../common/jquery/jquery-1.4.3.min.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/jquery-ui-1.8.2.custom.min.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/jquery.cookie.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/treeview/jquery.treeview.min.js"><!----></script>
+  <script type="text/javascript"
+          src="../common/jquery/jquery.qtip-1.0.0-rc3/jquery.qtip-1.0.0-rc3.min.js"><!--jQuery plugin for glossary popups. --></script>
+  <script type="text/javascript" src="search/htmlFileList.js"><!----></script>
+  <script type="text/javascript" src="search/htmlFileInfoList.js"><!----></script>
+  <script type="text/javascript" src="search/nwSearchFnt.js"><!----></script>
+  <script type="text/javascript" src="search/stemmers/en_stemmer.js"><
+  !--//make this scalable to other languages as well.--></script>
+  <script type="text/javascript" src="search/index-1.js"><!----></script>
+  <script type="text/javascript" src="search/index-2.js"><!----></script>
+  <script type="text/javascript" src="search/index-3.js"><!----></script>
+</head>
+<body>
+<div id="header"><a onclick="_gaq.push(['_trackEvent', 'Header', 'logo', 'click', 1]);" target="_blank"
+                    href="http://incubator.apache.org/ambari"><img src="../common/images/ambari-logo.png"
+                                                           alt="Apache Ambari Project Website" width="60" height="60"/></a>
+
+  <h1>7. Assign Slaves and Clients</h1>
+
+  <div id="navheader" align="right"><!---->
+    <table class="navLinks">
+      <tr>
+        <td><a id="showHideButton"
+               onclick="showHideToc(); _gaq.push(['_trackEvent', 'Header', 'show/hide', 'click', 1]);" class="pointLeft"
+               title="Hide TOC tree">Sidebar
+        </a></td>
+        <td><a accesskey="p" class="navLinkPrevious"
+               onclick="_gaq.push(['_trackEvent', 'Header', 'prevLink', 'click', 1]);" tabindex="5"
+               href="ambari-chap3-5.html">Prev</a>
+          |
+          <a accesskey="u" class="navLinkUp" onclick="_gaq.push(['_trackEvent', 'Header', 'upLink', 'click', 1]);"
+             tabindex="5" href="ambari-chap3.html">Up</a>
+          |
+          <a accesskey="n" class="navLinkNext" onclick="_gaq.push(['_trackEvent', 'Header', 'nextLink', 'click', 1]);"
+             tabindex="5" href="ambari-chap3-7.html">Next</a></td>
+      </tr>
+    </table>
+  </div>
+</div>
+<div id="toolbar" class="ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all">
+  <div id="toolbar-left"><p class="breadcrumbs"><a href="http://incubator.apache.org/ambari"> Apache Ambari Project Website</a><a href="index.html">Ambari User Guide</a></p></div>
+</div>
+<div id="content">
+  <div class="statustext"> </div>
+  <div class="section">
+    <div xmlns="" class="titlepage">
+      <div>
+        <div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="ambari-chap3-6"> </a>7. Assign
+          Slaves and Clients</h2></div>
+      </div>
+    </div>
+    <p>The Ambari install wizard attempts to assign the slave components (DataNodes, TaskTrackers,
+      and RegionServers) to appropriate hosts in your cluster. It also attempts to select hosts for
+      installing the appropriate set of clients.</p>
+
+    <div class="orderedlist">
+      <ol class="orderedlist" type="1">
+        <li class="listitem"><p>Use <span class="bold"><strong>all</strong></span> or <span
+          class="bold"><strong>none</strong></span> to select
+          all of the hosts in the column or none of the hosts, respectively. </p>
+
+          <p>If a host has a red asterisk next to it, that host is also running one or more master
+            components. Hover your mouse over the asterisk to see which master components are on that host. </p></li>
+        <li class="listitem"><p>Fine-tune your selections by using the checkboxes next to specific hosts.</p>
+
+          <div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
+            <table border="0" summary="Note">
+              <tr>
+                <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]"
+                                                                            src="../common/images/admon/note.png"/></td>
+                <th align="left">Note</th>
+              </tr>
+              <tr>
+                <td align="left" valign="top"><p>As an option you can start the HBase REST server manually after the
+                  install process is
+                  complete. It can be started on any host that has the HBase Master or the Region Server installed. If
+                  you attempt to start it on the same host as the Ambari server, however, you need to start it with
+                  the -p option, as its default port is 8080 and that conflicts with the Ambari Web default port.
+                </p>
+                  <pre class="screen">/usr/lib/hbase/bin/hbase-daemon.sh start rest -p &lt;custom_port_number&gt;</pre>
+                  <p>
+                  </p></td>
+              </tr>
+            </table>
+          </div>
+        </li>
+        <li class="listitem"><p>When you are satisfied with your assignments, click the <span
+          class="bold"><strong>Next</strong></span>
+          button.</p></li>
+      </ol>
+    </div>
+  </div>
+  <script type="text/javascript" src="../common/main.js"><!----></script>
+  <hr/>
+  <div class="legal"><a href="index.html">Index</a></div>
+</div>
+<div>
+  <div id="leftnavigation" style="padding-top:3px; background-color:white;">
+    <div id="tabs">
+      <ul>
+        <li><a href="#treeDiv" tabindex="1"><span class="contentsTab">Contents</span></a></li>
+        <li><a href="#searchDiv" tabindex="1"><span class="searchTab">Search</span></a></li>
+      </ul>
+      <div id="treeDiv"><img src="../common/images/loading.gif" alt="loading table of contents..." id="tocLoading"
+                             style="display:block;"/>
+
+        <div id="ulTreeDiv" style="display:none" class="thisisthat">
+          <ul id="tree" class="filetree">
+            <li tabindex="2"><span class="file"><a href="ambari-chap1.html">1. Getting Ready to Install</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-1.html">1. Understand the Basics</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html">2. Meet Minimum System
+                  Requirements</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-1">2.1. Hardware
+                      Recommendations</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-2">2.2. Operating
+                      Systems Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-3">2.3. Browser
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-4">2.4. Software
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-5">2.5. Database
+                      Requirements</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-3.html">3. Decide on Deployment
+                  Type</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-4.html">4. Collect Information</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-5.html">5. Prepare the Environment</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-1.html">5.1. Check Existing Installs</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-2.html">5.2. Set Up Password-less
+                      SSH</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-3.html">5.3. Enable NTP on the Cluster
+                      and on the Browser Host</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-4.html">5.4. Check DNS</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-5.html">5.5. Disable SELinux</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-6.html">5.6. Disable iptables</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-7.html">5.7. Disable
+                      PackageKit</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-8.html">5.8. Check umask
+                      Value</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-6.html">6. Optional: Configure the Local
+                  Repositories</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap2.html">2. Running the Installer</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-1.html">1. Set Up the Bits</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.1.html">1.1. RHEL/CentOS 5.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.2.html">1.2. RHEL/CentOS 6.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.3.html">1.3. SLES 11</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2.html">2. Set Up the Server</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2-2-1.html">2.1. Setup Options</a></span>
+                    </li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-4.html">3. Optional: Set Up LDAP or Active
+                  Directory Authentication</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2a.html">4. Optional: Change the Ambari Server
+                  Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-3.html">5. Start the Ambari Server</a></span>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap3.html">3. Installing, Configuring, and Deploying
+              the Cluster</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-1.html">1. Log into Apache Ambari</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-2.html">2. Welcome</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-3.html">3. Install Options</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-4.html">4. Confirm Hosts</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ch03s05.html">5. Choose Services</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-5.html">6. Assign Masters</a></span></li>
+                <li tabindex="2" id="webhelp-currentid"><span class="file"><a href="ambari-chap3-6.html">7. Assign
+                  Slaves and Clients</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-7.html">8. Customize Services</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap3-7-9a.html">8.1. Recommended Memory
+                      Configurations for the MapReduce Service</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-8.html">9. Review</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-9.html">10. Install, Start and Test</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-10.html">11. Summary</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap5.html">4. Troubleshooting Ambari
+              Deployments</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-1.html">1. Getting the Logs</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-2.html">2. Quick Checks</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-3.html">3. Specific Issues</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html">3.1. Problem: Browser crashed
+                      before Install Wizard completed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html#ambari-chap5-3-a-1">3.1.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html">3.2. Problem: Install Wizard
+                      reports that the cluster install has failed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html#ambari-chap5-3-b-1">3.2.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html">3.3. Problem: “Unable to create
+                      new native thread” exceptions in HDFS DataNode logs or those of any system daemon</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html#ambari-chap5-3-1-1">3.3.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html">3.4. Problem: The “yum install
+                      ambari-server” Command Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html#ambari-chap5-3-2-1">3.4.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html">3.5. Problem: HDFS Smoke Test
+                      Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html#ambari-chap5-3-3-1">3.5.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="chap5-3-4.html">3.6. Problem: The HCatalog Daemon
+                      Metastore Smoke Test Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="chap5-3-4.html#chap5-3-4-1">3.6.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html">3.7. Problem: MySQL and Nagios
+                      fail to install on RightScale CentOS 5 images on EC2 </a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html#ambari-chap5.3.5.1">3.7.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html">3.8. Problem: Trouble starting
+                      Ambari on system reboot</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html#ambari-chap5-3-7-1">3.8.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html">3.9. Problem: Metrics and Host
+                      information display incorrectly in Ambari Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html#ambari-chap5-3-8-1">3.9.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html">3.10. Problem: On SUSE 11 Ambari
+                      Agent crashes within the first 24 hours</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html#ambari-chap5-3-9-1">3.10.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html">3.11. Problem: Attempting to
+                      Start HBase REST server causes either REST server or Ambari Web to fail</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html#ambari-chap5-3-10-1">3.11.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html">3.12. Problem: Multiple Ambari
+                      Agent processes are running, causing re-register</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html#ambari-chap5-3-11-1">3.12.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html">3.13. Problem: Some graphs do
+                      not show a complete hour of data until the cluster has been running
+                      for an hour</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html#ambari-chap5-3-12-1">3.13.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html">3.14. Problem: After performing
+                      a cluster install the Nagios server is not started</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html#ambari-chap5-3-13-1">3.14.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html">3.15. Problem: A service with a
+                      customized service user is not appearing properly in Ambari
+                      Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html#ambari-chap5-3-14-1">3.15.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html">3.16. Problem: Updated
+                      configuration changes are not pushed to client/gateway nodes</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html#ambari-chap5-3-15-1">3.16.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html">3.17. Problem: Trying to
+                      upgrade Ambari Server on SLES produces error</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html#ambari-chap5-3-16-1">3.17.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                  </ul>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap6.html">5. Appendix: Installing Ambari Agents
+              Manually</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-1.html">1. RHEL/CentOS v. 5.x and
+                  6.x</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-2.html">2. SLES</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7a.html">6. Appendix: Using Custom
+              Hostnames</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap8.html">7. Appendix: Upgrading Operating Systems on
+              an Ambari-based Hadoop Installation</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7.html">8. Appendix: Upgrading Ambari Server from
+              1.2.0/1.2.1/1.2.2/1.2.2.5 to 1.2.3.7</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap9.html">9. Appendix: Upgrading the HDP Stack from
+              1.2.0/1.2.1 to 1.3.0</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-1.html">1. Preparing for the
+                  Upgrade</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-2.html">2. Setting Up the Ambari
+                  Repository</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-3.html">3. Upgrading Ambari Server and
+                  Agents</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-4.html">4. Upgrading the Stack</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="reference_chap2.html">10. Configuring Ports</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_1.html">1. HDFS Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_2.html">2. MapReduce Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_3.html">3. Hive Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4.html">4. HBase Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4a.html">5. WebHCat Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_5.html">6. Ganglia Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_6.html">7. MySQL Ports</a></span></li>
+              </ul>
+            </li>
+          </ul>
+        </div>
+      </div>
+      <div id="searchDiv">
+        <div id="search">
+          <form onsubmit="Verifie(ditaSearch_Form);return false" name="ditaSearch_Form" class="searchForm">
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+        <div id="searchResults">
+          <center/>
+        </div>
+        <p class="searchHighlight"><a href="#" onclick="toggleHighlight()">Search Highlighter (On/Off)</a></p></div>
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Added: incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7-9a.html
URL: http://svn.apache.org/viewvc/incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7-9a.html?rev=1487690&view=auto
==============================================================================
--- incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7-9a.html (added)
+++ incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7-9a.html Thu May 30 00:34:39 2013
@@ -0,0 +1,453 @@
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+  <h1>8.1. Recommended Memory Configurations for the MapReduce Service</h1>
+
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+  <div class="section">
+    <div xmlns="" class="titlepage">
+      <div>
+        <div><h3 xmlns="http://www.w3.org/1999/xhtml" class="title"><a id="ambari-chap3-7-9a"> </a>8.1. Recommended
+          Memory Configurations for the MapReduce Service</h3></div>
+      </div>
+    </div>
+    <p>The following recommendations can help you determine appropriate memory configurations based
+      on your usage scenario:</p>
+
+    <div class="itemizedlist">
+      <ul class="itemizedlist" type="disc">
+        <li class="listitem"><p>Make sure that there is enough memory for all the processes. Remember that
+          system processes take around 10% of the available memory.</p></li>
+        <li class="listitem"><p>For co-deploying an HBase RegionServer and MapReduce service on the same node, reduce
+          the
+          RegionServer's heap size (use the <span class="bold"><strong>HBase Settings: RegionServer</strong></span>:
+          <code class="literal">HBase Region Servers maximum Java heap size </code>property to modify the RegionServer
+          heap size).</p></li>
+        <li class="listitem"><p>For co-deploying an HBase RegionServer and the MapReduce service on the same node, or
+          for
+          memory intensive MapReduce applications, modify the map and reduce slots as suggested in the
+          following example:</p></li>
+      </ul>
+    </div>
+    <p><span class="bold"><strong>EXAMPLE:</strong></span> For co-deploying an HBase RegionServer and the
+      MapReduce service on a machine with 16GB of available memory, the following would be a recommended
+      configuration:</p>
+
+    <p>2 GB: system processes</p>
+
+    <p>8 GB: MapReduce slots. 6 Map + 2 Reduce slots per 1 GB task</p>
+
+    <p>4 GB: HBase RegionServer</p>
+
+    <p>1 GB: TaskTracker</p>
+
+    <p>1 GB: DataNode </p>
+
+    <p>To change the number of Map and Reduce slots based on the memory requirements of your application, use the
+      following properties:</p>
+
+    <p>• <span class="bold"><strong>MapReduce Settings: TaskTracker</strong></span>: <code class="literal">Number of Map
+      slots per node</code></p>
+
+    <p>• <span class="bold"><strong>MapReduce Settings: TaskTracker</strong></span>: <code class="literal">Number of
+      Reduce
+      slots per node</code></p></div>
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+
+        <div id="ulTreeDiv" style="display:none" class="thisisthat">
+          <ul id="tree" class="filetree">
+            <li tabindex="2"><span class="file"><a href="ambari-chap1.html">1. Getting Ready to Install</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-1.html">1. Understand the Basics</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html">2. Meet Minimum System
+                  Requirements</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-1">2.1. Hardware
+                      Recommendations</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-2">2.2. Operating
+                      Systems Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-3">2.3. Browser
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-4">2.4. Software
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-5">2.5. Database
+                      Requirements</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-3.html">3. Decide on Deployment
+                  Type</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-4.html">4. Collect Information</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-5.html">5. Prepare the Environment</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-1.html">5.1. Check Existing Installs</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-2.html">5.2. Set Up Password-less
+                      SSH</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-3.html">5.3. Enable NTP on the Cluster
+                      and on the Browser Host</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-4.html">5.4. Check DNS</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-5.html">5.5. Disable SELinux</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-6.html">5.6. Disable iptables</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-7.html">5.7. Disable
+                      PackageKit</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-8.html">5.8. Check umask
+                      Value</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-6.html">6. Optional: Configure the Local
+                  Repositories</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap2.html">2. Running the Installer</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-1.html">1. Set Up the Bits</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.1.html">1.1. RHEL/CentOS 5.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.2.html">1.2. RHEL/CentOS 6.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.3.html">1.3. SLES 11</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2.html">2. Set Up the Server</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2-2-1.html">2.1. Setup Options</a></span>
+                    </li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-4.html">3. Optional: Set Up LDAP or Active
+                  Directory Authentication</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2a.html">4. Optional: Change the Ambari Server
+                  Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-3.html">5. Start the Ambari Server</a></span>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap3.html">3. Installing, Configuring, and Deploying
+              the Cluster</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-1.html">1. Log into Apache Ambari</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-2.html">2. Welcome</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-3.html">3. Install Options</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-4.html">4. Confirm Hosts</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ch03s05.html">5. Choose Services</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-5.html">6. Assign Masters</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-6.html">7. Assign Slaves and
+                  Clients</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-7.html">8. Customize Services</a></span>
+                  <ul>
+                    <li tabindex="2" id="webhelp-currentid"><span class="file"><a href="ambari-chap3-7-9a.html">8.1.
+                      Recommended Memory Configurations for the MapReduce Service</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-8.html">9. Review</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-9.html">10. Install, Start and Test</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-10.html">11. Summary</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap5.html">4. Troubleshooting Ambari
+              Deployments</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-1.html">1. Getting the Logs</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-2.html">2. Quick Checks</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-3.html">3. Specific Issues</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html">3.1. Problem: Browser crashed
+                      before Install Wizard completed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html#ambari-chap5-3-a-1">3.1.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html">3.2. Problem: Install Wizard
+                      reports that the cluster install has failed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html#ambari-chap5-3-b-1">3.2.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html">3.3. Problem: “Unable to create
+                      new native thread” exceptions in HDFS DataNode logs or those of any system daemon</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html#ambari-chap5-3-1-1">3.3.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html">3.4. Problem: The “yum install
+                      ambari-server” Command Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html#ambari-chap5-3-2-1">3.4.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html">3.5. Problem: HDFS Smoke Test
+                      Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html#ambari-chap5-3-3-1">3.5.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="chap5-3-4.html">3.6. Problem: The HCatalog Daemon
+                      Metastore Smoke Test Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="chap5-3-4.html#chap5-3-4-1">3.6.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html">3.7. Problem: MySQL and Nagios
+                      fail to install on RightScale CentOS 5 images on EC2 </a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html#ambari-chap5.3.5.1">3.7.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html">3.8. Problem: Trouble starting
+                      Ambari on system reboot</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html#ambari-chap5-3-7-1">3.8.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html">3.9. Problem: Metrics and Host
+                      information display incorrectly in Ambari Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html#ambari-chap5-3-8-1">3.9.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html">3.10. Problem: On SUSE 11 Ambari
+                      Agent crashes within the first 24 hours</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html#ambari-chap5-3-9-1">3.10.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html">3.11. Problem: Attempting to
+                      Start HBase REST server causes either REST server or Ambari Web to fail</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html#ambari-chap5-3-10-1">3.11.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html">3.12. Problem: Multiple Ambari
+                      Agent processes are running, causing re-register</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html#ambari-chap5-3-11-1">3.12.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html">3.13. Problem: Some graphs do
+                      not show a complete hour of data until the cluster has been running
+                      for an hour</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html#ambari-chap5-3-12-1">3.13.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html">3.14. Problem: After performing
+                      a cluster install the Nagios server is not started</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html#ambari-chap5-3-13-1">3.14.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html">3.15. Problem: A service with a
+                      customized service user is not appearing properly in Ambari
+                      Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html#ambari-chap5-3-14-1">3.15.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html">3.16. Problem: Updated
+                      configuration changes are not pushed to client/gateway nodes</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html#ambari-chap5-3-15-1">3.16.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html">3.17. Problem: Trying to
+                      upgrade Ambari Server on SLES produces error</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html#ambari-chap5-3-16-1">3.17.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                  </ul>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap6.html">5. Appendix: Installing Ambari Agents
+              Manually</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-1.html">1. RHEL/CentOS v. 5.x and
+                  6.x</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-2.html">2. SLES</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7a.html">6. Appendix: Using Custom
+              Hostnames</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap8.html">7. Appendix: Upgrading Operating Systems on
+              an Ambari-based Hadoop Installation</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7.html">8. Appendix: Upgrading Ambari Server from
+              1.2.0/1.2.1/1.2.2/1.2.2.5 to 1.2.3.7</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap9.html">9. Appendix: Upgrading the HDP Stack from
+              1.2.0/1.2.1 to 1.3.0</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-1.html">1. Preparing for the
+                  Upgrade</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-2.html">2. Setting Up the Ambari
+                  Repository</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-3.html">3. Upgrading Ambari Server and
+                  Agents</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-4.html">4. Upgrading the Stack</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="reference_chap2.html">10. Configuring Ports</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_1.html">1. HDFS Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_2.html">2. MapReduce Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_3.html">3. Hive Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4.html">4. HBase Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4a.html">5. WebHCat Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_5.html">6. Ganglia Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_6.html">7. MySQL Ports</a></span></li>
+              </ul>
+            </li>
+          </ul>
+        </div>
+      </div>
+      <div id="searchDiv">
+        <div id="search">
+          <form onsubmit="Verifie(ditaSearch_Form);return false" name="ditaSearch_Form" class="searchForm">
+            <fieldset class="searchFieldSet">
+              <legend>Search</legend>
+              <center><input id="textToSearch" name="textToSearch" type="text" class="searchText"/> &nbsp; <input
+                onclick="Verifie(ditaSearch_Form)" type="button" class="searchButton" value="Go" id="doSearch"/>
+              </center>
+            </fieldset>
+          </form>
+        </div>
+        <div id="searchResults">
+          <center/>
+        </div>
+        <p class="searchHighlight"><a href="#" onclick="toggleHighlight()">Search Highlighter (On/Off)</a></p></div>
+    </div>
+  </div>
+</div>
+<script type="text/javascript"
+        src="../common/jquery/jquery.qtip-1.0.0-rc3/jquery.qtip-1.0.0-rc3.min.js"><!--jQuery plugin for glossary popups. -->
+$('a[title]').qtip({ style: { name: 'cream', tip: true } })
+</script>
+</body>
+</html>
\ No newline at end of file

Added: incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7.html
URL: http://svn.apache.org/viewvc/incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7.html?rev=1487690&view=auto
==============================================================================
--- incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7.html (added)
+++ incubator/ambari/site/1.2.3/installing-hadoop-using-ambari/content/ambari-chap3-7.html Thu May 30 00:34:39 2013
@@ -0,0 +1,428 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html
+  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:exsl="http://exslt.org/common" xmlns:ng="http://docbook.org/docbook-ng"
+      xmlns:fb="http://ogp.me/ns/fb#">
+<head>
+  <meta http-equiv="X-UA-Compatible" content="IE=7"/>
+  <title>8. Customize Services - Apache Ambari
+  </title>
+  <meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/>
+  <meta name="mavenGroupId" content="ambari"/>
+  <meta name="mavenArtifactId" content="ambari"/>
+  <meta name="mavenVersionId" content="1.3.0"/>
+  <link rel="home" href="index.html" title="Apache Ambari"/>
+  <link rel="up" href="ambari-chap3.html" title="Chapter 3. Installing, Configuring, and Deploying the Cluster"/>
+  <link rel="prev" href="ambari-chap3-6.html" title="7. Assign Slaves and Clients"/>
+  <link rel="next" href="ambari-chap3-7-9a.html"
+        title="8.1. Recommended Memory Configurations for the MapReduce Service"/>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+  <script type="text/javascript">
+    //The id for tree cookie
+    var treeCookieId = "treeview-4022";
+    var language = "en";
+    var w = new Object();
+    //Localization
+    txt_filesfound = 'Results';
+    txt_enter_at_least_1_char = "You must enter at least one character.";
+    txt_browser_not_supported = "Your browser is not supported. Use of Mozilla Firefox is recommended.";
+    txt_please_wait = "Please wait. Search in progress...";
+    txt_results_for = "Results for: ";
+  </script>
+  <style type="text/css">
+    input {
+      margin-bottom: 5px;
+      margin-top: 2px;
+    }
+
+    .folder {
+      display: block;
+      height: 22px;
+      padding-left: 20px;
+      background: transparent url(../common/jquery/treeview/images/folder.gif) 0 0px no-repeat;
+    }
+
+  </style>
+  <link rel="shortcut icon" href="../favicon.ico" type="image/x-icon"/>
+  <link rel="stylesheet" type="text/css" href="../common/css/positioning.css"/>
+  <link rel="stylesheet" type="text/css" href="../common/css/custom.css"/>
+  <!--[if IE]>
+  <link rel="stylesheet" type="text/css" href="../common/css/ie.css"/>
+  <![endif]-->
+  <link rel="stylesheet" type="text/css" href="../common/jquery/theme-redmond/jquery-ui-1.8.2.custom.css"/>
+  <link rel="stylesheet" type="text/css" href="../common/jquery/treeview/jquery.treeview.css"/>
+  <script type="text/javascript" src="../common/jquery/jquery-1.4.3.min.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/jquery-ui-1.8.2.custom.min.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/jquery.cookie.js"><!----></script>
+  <script type="text/javascript" src="../common/jquery/treeview/jquery.treeview.min.js"><!----></script>
+  <script type="text/javascript"
+          src="../common/jquery/jquery.qtip-1.0.0-rc3/jquery.qtip-1.0.0-rc3.min.js"><!--jQuery plugin for glossary popups. --></script>
+  <script type="text/javascript" src="search/htmlFileList.js"><!----></script>
+  <script type="text/javascript" src="search/htmlFileInfoList.js"><!----></script>
+  <script type="text/javascript" src="search/nwSearchFnt.js"><!----></script>
+  <script type="text/javascript" src="search/stemmers/en_stemmer.js"><
+  !--//make this scalable to other languages as well.--></script>
+  <script type="text/javascript" src="search/index-1.js"><!----></script>
+  <script type="text/javascript" src="search/index-2.js"><!----></script>
+  <script type="text/javascript" src="search/index-3.js"><!----></script>
+</head>
+<body>
+<div id="header"><a onclick="_gaq.push(['_trackEvent', 'Header', 'logo', 'click', 1]);" target="_blank"
+                    href="http://incubator.apache.org/ambari"><img src="../common/images/ambari-logo.png"
+                                                           alt="Apache Ambari Project Website" width="60" height="60"/></a>
+
+  <h1>8. Customize Services</h1>
+
+  <div id="navheader" align="right"><!---->
+    <table class="navLinks">
+      <tr>
+        <td><a id="showHideButton"
+               onclick="showHideToc(); _gaq.push(['_trackEvent', 'Header', 'show/hide', 'click', 1]);" class="pointLeft"
+               title="Hide TOC tree">Sidebar
+        </a></td>
+        <td><a accesskey="p" class="navLinkPrevious"
+               onclick="_gaq.push(['_trackEvent', 'Header', 'prevLink', 'click', 1]);" tabindex="5"
+               href="ambari-chap3-6.html">Prev</a>
+          |
+          <a accesskey="u" class="navLinkUp" onclick="_gaq.push(['_trackEvent', 'Header', 'upLink', 'click', 1]);"
+             tabindex="5" href="ambari-chap3.html">Up</a>
+          |
+          <a accesskey="n" class="navLinkNext" onclick="_gaq.push(['_trackEvent', 'Header', 'nextLink', 'click', 1]);"
+             tabindex="5" href="ambari-chap3-7-9a.html">Next</a></td>
+      </tr>
+    </table>
+  </div>
+</div>
+<div id="toolbar" class="ui-tabs-nav ui-helper-reset ui-helper-clearfix ui-widget-header ui-corner-all">
+  <div id="toolbar-left"><p class="breadcrumbs"><a href="http://incubator.apache.org/ambari"> Apache Ambari Project Website</a><a href="index.html">Ambari User Guide</a></p></div>
+</div>
+<div id="content">
+  <div class="statustext"> </div>
+  <div class="section">
+    <div xmlns="" class="titlepage">
+      <div>
+        <div><h2 xmlns="http://www.w3.org/1999/xhtml" class="title" style="clear: both"><a id="ambari-chap3-7"> </a>8. Customize
+          Services</h2></div>
+      </div>
+    </div>
+    <p>The <span class="bold"><strong>Customize Services</strong></span> screen presents you with a set of tabs
+      that let you manage configuration settings for Hadoop components. The wizard attempts to set
+      reasonable defaults for each of the options here, but you can use this set of tabs to tweak those
+      settings. and you are strongly encouraged to do so, as your requirements may be slightly different.
+      Pay particular attention to the directories suggested by the installer.</p>
+
+    <p>Hover your mouse over each of the properties to see a brief description of what it does. The
+      number of tabs you see is based on the type of installation you have decided to do. In a complete
+      installation there are nine groups of configuration properties and other related options, such as
+      database settings for Hive and Oozie and admin name/password and alert email for Nagios. The install
+      wizard has set reasonable defaults for all properties except for one in the Hive/HCat tab, one in
+      the Oozie tab, and two in the Nagios tab. These four are marked in red and are the only ones you
+      <span class="italic">must </span>set yourself. Click the name of the group in each tab to
+      expand and collapse the display.</p></div>
+  <script type="text/javascript" src="../common/main.js"><!----></script>
+  <hr/>
+  <div class="legal"><a href="index.html">Index</a></div>
+</div>
+<div>
+  <div id="leftnavigation" style="padding-top:3px; background-color:white;">
+    <div id="tabs">
+      <ul>
+        <li><a href="#treeDiv" tabindex="1"><span class="contentsTab">Contents</span></a></li>
+        <li><a href="#searchDiv" tabindex="1"><span class="searchTab">Search</span></a></li>
+      </ul>
+      <div id="treeDiv"><img src="../common/images/loading.gif" alt="loading table of contents..." id="tocLoading"
+                             style="display:block;"/>
+
+        <div id="ulTreeDiv" style="display:none" class="thisisthat">
+          <ul id="tree" class="filetree">
+            <li tabindex="2"><span class="file"><a href="ambari-chap1.html">1. Getting Ready to Install</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-1.html">1. Understand the Basics</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html">2. Meet Minimum System
+                  Requirements</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-1">2.1. Hardware
+                      Recommendations</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-2">2.2. Operating
+                      Systems Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-3">2.3. Browser
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-4">2.4. Software
+                      Requirements</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-2.html#ambari-chap1-2-5">2.5. Database
+                      Requirements</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-3.html">3. Decide on Deployment
+                  Type</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-4.html">4. Collect Information</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-5.html">5. Prepare the Environment</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-1.html">5.1. Check Existing Installs</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-2.html">5.2. Set Up Password-less
+                      SSH</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-3.html">5.3. Enable NTP on the Cluster
+                      and on the Browser Host</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-4.html">5.4. Check DNS</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-5.html">5.5. Disable SELinux</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-6.html">5.6. Disable iptables</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-7.html">5.7. Disable
+                      PackageKit</a></span></li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap1-5-8.html">5.8. Check umask
+                      Value</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap1-6.html">6. Optional: Configure the Local
+                  Repositories</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap2.html">2. Running the Installer</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-1.html">1. Set Up the Bits</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.1.html">1.1. RHEL/CentOS 5.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.2.html">1.2. RHEL/CentOS 6.x</a></span>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2.1.3.html">1.3. SLES 11</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2.html">2. Set Up the Server</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap2-2-1.html">2.1. Setup Options</a></span>
+                    </li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-4.html">3. Optional: Set Up LDAP or Active
+                  Directory Authentication</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-2a.html">4. Optional: Change the Ambari Server
+                  Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap2-3.html">5. Start the Ambari Server</a></span>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap3.html">3. Installing, Configuring, and Deploying
+              the Cluster</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-1.html">1. Log into Apache Ambari</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-2.html">2. Welcome</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-3.html">3. Install Options</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-4.html">4. Confirm Hosts</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ch03s05.html">5. Choose Services</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-5.html">6. Assign Masters</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-6.html">7. Assign Slaves and
+                  Clients</a></span></li>
+                <li tabindex="2" id="webhelp-currentid"><span class="file"><a href="ambari-chap3-7.html">8. Customize
+                  Services</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap3-7-9a.html">8.1. Recommended Memory
+                      Configurations for the MapReduce Service</a></span></li>
+                  </ul>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-8.html">9. Review</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-9.html">10. Install, Start and Test</a></span>
+                </li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap3-10.html">11. Summary</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap5.html">4. Troubleshooting Ambari
+              Deployments</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-1.html">1. Getting the Logs</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-2.html">2. Quick Checks</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap5-3.html">3. Specific Issues</a></span>
+                  <ul>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html">3.1. Problem: Browser crashed
+                      before Install Wizard completed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-a.html#ambari-chap5-3-a-1">3.1.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html">3.2. Problem: Install Wizard
+                      reports that the cluster install has failed</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-b.html#ambari-chap5-3-b-1">3.2.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html">3.3. Problem: “Unable to create
+                      new native thread” exceptions in HDFS DataNode logs or those of any system daemon</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-1.html#ambari-chap5-3-1-1">3.3.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html">3.4. Problem: The “yum install
+                      ambari-server” Command Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-2.html#ambari-chap5-3-2-1">3.4.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html">3.5. Problem: HDFS Smoke Test
+                      Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-3.html#ambari-chap5-3-3-1">3.5.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="chap5-3-4.html">3.6. Problem: The HCatalog Daemon
+                      Metastore Smoke Test Fails</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="chap5-3-4.html#chap5-3-4-1">3.6.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html">3.7. Problem: MySQL and Nagios
+                      fail to install on RightScale CentOS 5 images on EC2 </a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-5.html#ambari-chap5.3.5.1">3.7.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html">3.8. Problem: Trouble starting
+                      Ambari on system reboot</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-7.html#ambari-chap5-3-7-1">3.8.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html">3.9. Problem: Metrics and Host
+                      information display incorrectly in Ambari Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-8.html#ambari-chap5-3-8-1">3.9.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html">3.10. Problem: On SUSE 11 Ambari
+                      Agent crashes within the first 24 hours</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-9.html#ambari-chap5-3-9-1">3.10.1.
+                          Solution:</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html">3.11. Problem: Attempting to
+                      Start HBase REST server causes either REST server or Ambari Web to fail</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-10.html#ambari-chap5-3-10-1">3.11.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html">3.12. Problem: Multiple Ambari
+                      Agent processes are running, causing re-register</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-11.html#ambari-chap5-3-11-1">3.12.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html">3.13. Problem: Some graphs do
+                      not show a complete hour of data until the cluster has been running
+                      for an hour</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-12.html#ambari-chap5-3-12-1">3.13.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html">3.14. Problem: After performing
+                      a cluster install the Nagios server is not started</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-13.html#ambari-chap5-3-13-1">3.14.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html">3.15. Problem: A service with a
+                      customized service user is not appearing properly in Ambari
+                      Web</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-14.html#ambari-chap5-3-14-1">3.15.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html">3.16. Problem: Updated
+                      configuration changes are not pushed to client/gateway nodes</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-15.html#ambari-chap5-3-15-1">3.16.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                    <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html">3.17. Problem: Trying to
+                      upgrade Ambari Server on SLES produces error</a></span>
+                      <ul>
+                        <li tabindex="2"><span class="file"><a href="ambari-chap5-3-16.html#ambari-chap5-3-16-1">3.17.1.
+                          Solution</a></span></li>
+                      </ul>
+                    </li>
+                  </ul>
+                </li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap6.html">5. Appendix: Installing Ambari Agents
+              Manually</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-1.html">1. RHEL/CentOS v. 5.x and
+                  6.x</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap6-2.html">2. SLES</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7a.html">6. Appendix: Using Custom
+              Hostnames</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap8.html">7. Appendix: Upgrading Operating Systems on
+              an Ambari-based Hadoop Installation</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap7.html">8. Appendix: Upgrading Ambari Server from
+              1.2.0/1.2.1/1.2.2/1.2.2.5 to 1.2.3.7</a></span></li>
+            <li tabindex="2"><span class="file"><a href="ambari-chap9.html">9. Appendix: Upgrading the HDP Stack from
+              1.2.0/1.2.1 to 1.3.0</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-1.html">1. Preparing for the
+                  Upgrade</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-2.html">2. Setting Up the Ambari
+                  Repository</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-3.html">3. Upgrading Ambari Server and
+                  Agents</a></span></li>
+                <li tabindex="2"><span class="file"><a href="ambari-chap9-4.html">4. Upgrading the Stack</a></span></li>
+              </ul>
+            </li>
+            <li tabindex="2"><span class="file"><a href="reference_chap2.html">10. Configuring Ports</a></span>
+              <ul>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_1.html">1. HDFS Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_2.html">2. MapReduce Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_3.html">3. Hive Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4.html">4. HBase Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_4a.html">5. WebHCat Port</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_5.html">6. Ganglia Ports</a></span></li>
+                <li tabindex="2"><span class="file"><a href="reference_chap2_6.html">7. MySQL Ports</a></span></li>
+              </ul>
+            </li>
+          </ul>
+        </div>
+      </div>
+      <div id="searchDiv">
+        <div id="search">
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