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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Trivial Update of "Hbase/HowToMigrate" by stack
Date Tue, 21 Jul 2009 17:39:36 GMT
Dear Wiki user,

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The following page has been changed by stack:
http://wiki.apache.org/hadoop/Hbase/HowToMigrate

------------------------------------------------------------------------------
  === From 0.19.x to 0.20.x ===
  
  You can only migrate to 0.20.x from 0.19.x.  If you have an earlier hbase, you will need
to install 0.19, migrate your old instance, and then install 0.20.x.
+ 
+ Migration does not work for transactional hbase installs or for indexed hbase installs.
 Talk to us if you need this.
  
  This migration rewrites all data.  It will take a while.  TODO: MR version and single-threaded
version. How-to.
  
@@ -68, +70 @@

  {{{./bin/hbase org.apache.hadoop.hbase.regionserver.HRegion}}}
  
  ==== Migrating ====
+ ==== Post-Migration ====
+ Make sure you replace all under {{{$HBASE_HOME/conf}}} with files from the new release.
 For example, be sure to replace your old hbase-default.xml with the version from the new
hbase release.
  
+ Read the new 'Getting Started' carefully before starting up your cluster.  Basic configuration
properties have changed.  For example {{{hbase.master}}}/{{{hbase.master.hostname}}} is no
longer used.  They are replaced by {{{hbase.cluster.distributed}}}.  See the 'Getting Started'
for detail on how to set the new properties.  While your cluster will likely come up on the
old configuration settings, you should move to the new configuration.
  
  === From 0.1.x to 0.2.x or 0.18.x ===
  

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