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HBASE-4484 book.xml, configuration.xml 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1175916 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Doug Meil 2011-09-26 15:57:20 +00:00
parent ee2a23f11f
commit a06b4366f8
2 changed files with 35 additions and 26 deletions
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52
src/docbkx/book.xml
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@ -1247,9 +1247,7 @@ HTable table2 = new HTable(conf2, "myTable");</programlisting>
</section>
</section>
<section xml:id="daemons">
<title>Daemons</title>
<section xml:id="master"><title>Master</title>
<section xml:id="master"><title>Master</title>
<para><code>HMaster</code> is the implementation of the Master Server. The Master server
is responsible for monitoring all RegionServer instances in the cluster, and is
the interface for all metadata changes.
@ -1275,13 +1273,15 @@ HTable table2 = new HTable(conf2, "myTable");</programlisting>
</section>
<section xml:id="master.processes"><title>Processes</title>
<para>The Master runs several background threads:
<itemizedlist>
<listitem><code>LoadBalancer</code> periodically reassign regions in the cluster.
</listitem>
<listitem><code>CatalogJanitor</code> periodically checks and cleans up the .META. table.
</listitem>
</itemizedlist>
</para>
<section xml:id="master.processes.loadbalancer"><title>LoadBalancer</title>
<para>Periodically, and when there are not any regions in transition,
a load balancer will run and move regions around to balance cluster load.
See <xref linkend="balancer_config" /> for configuring this property.</para>
</section>
<section xml:id="master.processes.catalog"><title>CatalogJanitor</title>
<para>Periodically checks and cleans up the .META. table. See <xref linkend="arch.catalog.meta" /> for more information on META.</para>
</section>
</section>
</section>
@ -1302,24 +1302,25 @@ HTable table2 = new HTable(conf2, "myTable");</programlisting>
</section>
<section xml:id="regionserver.arch.processes"><title>Processes</title>
<para>The RegionServer runs a variety of background threads:</para>
<itemizedlist>
<listitem><code>CompactSplitThread</code> checks for splits and handle minor compactions.
</listitem>
<listitem><code>MajorCompactionChecker</code> checks for major compactions.
</listitem>
<listitem><code>MemStoreFlusher</code> periodically flushes in-memory writes in the MemStore to StoreFiles.
</listitem>
<listitem><code>LogRoller</code> periodically checks the RegionServer's HLog.
</listitem>
</itemizedlist>
<section xml:id="regionserver.arch.processes.compactsplit"><title>CompactSplitThread</title>
<para>Checks for splits and handle minor compactions.</para>
</section>
<section xml:id="regionserver.arch.processes.majorcompact"><title>MajorCompactionChecker</title>
<para>Checks for major compactions.</para>
</section>
<section xml:id="regionserver.arch.processes.memstore"><title>MemStoreFlusher</title>
<para>Periodically flushes in-memory writes in the MemStore to StoreFiles.</para>
</section>
<section xml:id="regionserver.arch.processes.log"><title>LogRoller</title>
<para>Periodically checks the RegionServer's HLog.</para>
</section>
</section>
</section>
</section>
<section xml:id="regions.arch">
<title>Regions</title>
<para>This chapter is all about Regions.</para>
<para>This section is all about Regions.</para>
<note>
<para>Regions are comprised of a Store per Column Family.
</para>
@ -1379,14 +1380,13 @@ HTable table2 = new HTable(conf2, "myTable");</programlisting>
splits (and for why you might do this)</para>
</section>
<section>
<title>Region Load Balancer</title>
<section xml:id="regions.arch.balancer">
<title>Region Load Balancing</title>
<para>
Periodically, and when there are not any regions in transition,
a load balancer will run and move regions around to balance cluster load.
The period at which it runs can be configured.
Regions can be periodically moved by the <xref linkend="master.processes.loadbalancer" />.
</para>
</section>
<section xml:id="store">

9
src/docbkx/configuration.xml
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@ -1095,7 +1095,16 @@ of all regions.
</section>
<section xml:id="other_configuration"><title>Other Configurations</title>
<section xml:id="balancer_config"><title>Balancer</title>
<para>The balancer is periodic operation run on the master to redistribute regions on the cluster. It is configured via
<varname>hbase.balancer.period</varname> and defaults to 300000 (5 minutes). </para>
<para>See <xref linkend="master.processes.loadbalancer" /> for more information on the LoadBalancer.
</para>
</section>
</section>
</section> <!-- important config -->
<section xml:id="config.bloom">
<title>Bloom Filter Configuration</title>