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Posted to commits@hbase.apache.org by st...@apache.org on 2011/10/19 19:22:26 UTC
svn commit: r1186355 - /hbase/trunk/src/docbkx/configuration.xml
Author: stack
Date: Wed Oct 19 17:22:26 2011
New Revision: 1186355
URL: http://svn.apache.org/viewvc?rev=1186355&view=rev
Log:
Refactor hadoop section to favor 205 over branch-0.20-append
Modified:
hbase/trunk/src/docbkx/configuration.xml
Modified: hbase/trunk/src/docbkx/configuration.xml
URL: http://svn.apache.org/viewvc/hbase/trunk/src/docbkx/configuration.xml?rev=1186355&r1=1186354&r2=1186355&view=diff
==============================================================================
--- hbase/trunk/src/docbkx/configuration.xml (original)
+++ hbase/trunk/src/docbkx/configuration.xml Wed Oct 19 17:22:26 2011
@@ -192,32 +192,34 @@ to ensure well-formedness of your docume
This version of HBase will only run on <link
xlink:href="http://hadoop.apache.org/common/releases.html">Hadoop
0.20.x</link>. It will not run on hadoop 0.21.x (nor 0.22.x).
- HBase will lose data unless it is running on an HDFS that has a durable
- <code>sync</code>. Hadoop 0.20.2 and Hadoop 0.20.203.0 DO NOT have this attribute.
- Currently only the <link
- xlink:href="http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/">branch-0.20-append</link>
- branch has this a working sync<footnote>
- <para>See <link
- xlink:href="http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/CHANGES.txt">CHANGES.txt</link>
- in branch-0.20-append to see list of patches involved adding
- append on the Hadoop 0.20 branch.</para>
- </footnote>. No official releases have been made from the branch-0.20-append branch up
- to now so you will have to build your own Hadoop from the tip of this
- branch. Michael Noll has written a detailed blog,
+ HBase will lose data unless it is running on an HDFS that have a durable
+ <code>sync</code>. Hadoop 0.20.2, Hadoop 0.20.203.0, and Hadoop 0.20.204.0
+ DO NOT have this attribute.
+ Currently only Hadoop versions 0.20.205.0 or any release in excess of this
+ version has a durable sync
+ <footnote><para>Until recently only the
+ <link xlink:href="http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/">branch-0.20-append</link>
+ branch had a working sync but no official release was ever made from this branch.
+ You had to build it yourself. Michael Noll wrote a detailed blog,
<link xlink:href="http://www.michael-noll.com/blog/2011/04/14/building-an-hadoop-0-20-x-version-for-hbase-0-90-2/">Building
an Hadoop 0.20.x version for HBase 0.90.2</link>, on how to build an
- Hadoop from branch-0.20-append. Recommended <footnote><para>Praveen Kumar has written
+ Hadoop from branch-0.20-append. Recommended.</para></footnote>
+ <footnote><para>Praveen Kumar has written
a complimentary article,
<link xlink:href="http://praveen.kumar.in/2011/06/20/building-hadoop-and-hbase-for-hbase-maven-application-development/">Building Hadoop and HBase for HBase Maven application development</link>.
</para></footnote>.</para>
-<para>Or rather than build your own, you could use the
+<para>Or use the
<link xlink:href="http://www.cloudera.com/">Cloudera</link> or
<link xlink:href="http://www.mapr.com/">MapR</link> distributions.
Cloudera' <link xlink:href="http://archive.cloudera.com/docs/">CDH3</link>
- is Apache Hadoop 0.20.x plus patches including all of the 0.20-append additions
- needed to add a durable sync. Use the released version of CDH3 at least (They
- have just posted an update). MapR includes a commercial, reimplementation of HDFS.
+ is Apache Hadoop 0.20.x plus patches including all of the
+ <link xlink:href="http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/">branch-0.20-append</link>
+ additions needed to add a durable sync. Use the released version of CDH3 at least (They
+ have just posted an update).</para>
+ <para>
+ <link xlink:href="http://www.mapr.com/">MapR</link>
+ includes a commercial, reimplementation of HDFS.
It has a durable sync as well as some other interesting features that are not
yet in Apache Hadoop. Their <link xlink:href="http://www.mapr.com/products/mapr-editions/m3-edition">M3</link>
product is free to use and unlimited.