Author: dmeil
Date: Mon Sep 26 15:57:20 2011
New Revision: 1175916
URL: http://svn.apache.org/viewvc?rev=1175916&view=rev
Log:
HBASE-4484 book.xml, configuration.xml
Modified:
hbase/trunk/src/docbkx/book.xml
hbase/trunk/src/docbkx/configuration.xml
Modified: hbase/trunk/src/docbkx/book.xml
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/docbkx/book.xml?rev=1175916&r1=1175915&r2=1175916&view=diff
==============================================================================
--- hbase/trunk/src/docbkx/book.xml (original)
+++ hbase/trunk/src/docbkx/book.xml Mon Sep 26 15:57:20 2011
@@ -1247,9 +1247,7 @@ HTable table2 = new HTable(conf2, "myTab
</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, "myTab
</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, "myTab
</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, "myTab
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">
Modified: hbase/trunk/src/docbkx/configuration.xml
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/docbkx/configuration.xml?rev=1175916&r1=1175915&r2=1175916&view=diff
==============================================================================
--- hbase/trunk/src/docbkx/configuration.xml (original)
+++ hbase/trunk/src/docbkx/configuration.xml Mon Sep 26 15:57:20 2011
@@ -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>
