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From Gary Helmling <ghelml...@gmail.com>
Subject Re: ANN: The fourth hbase 0.90.0 release candidate is available for download X
Date Wed, 19 Jan 2011 01:20:15 GMT
Sorry to be a bit late.

Minor problem in the generated docs.  The generated docs/index.html page
contains broken HTML for the link to the bigtable paper, but that's
extremely minor.  It's a 1 char fix ("<a hef" -> "<a href"):

--- src/site/xdoc/index.xml    (revision 1060545)
+++ src/site/xdoc/index.xml    (working copy)
@@ -29,7 +29,7 @@
 <div style="float: right;">
     <img src="http://hbase.apache.org/images/hadoop-logo.jpg"
style="border-style;none" />
 </div>
-HBase is an open-source, distributed, versioned, column-oriented store
modeled after Google' <a
hef="http://labs.google.com/papers/bigtable.html">Bigtable:
A Distributed Storage System for Structured</a> by Chang et al. Just as
Bigtable leverages the distributed data storage provided by the Google File
System, HBase provides Bigtable-like capabilities on top of Hadoop.
+HBase is an open-source, distributed, versioned, column-oriented store
modeled after Google' <a
href="http://labs.google.com/papers/bigtable.html">Bigtable:
A Distributed Storage System for Structured</a> by Chang et al. Just as
Bigtable leverages the distributed data storage provided by the Google File
System, HBase provides Bigtable-like capabilities on top of Hadoop.
 HBase includes:
 <ul>

Obviously not critical, and other doc links look good.  Tests look good.
Ran through some YCSB tests on EC2.

+1 on release.

--gh


On Tue, Jan 18, 2011 at 11:24 AM, Jean-Daniel Cryans <jdcryans@apache.org>wrote:

> +1, ran the tests, checked out the docs, gave it a ride.
>
> J-D
>
> On Fri, Jan 7, 2011 at 5:03 PM, Stack <stack@duboce.net> wrote:
> > The fourth hbase 0.90.0 release candidate is available for download:
> >
> >  http://people.apache.org/~stack/hbase-0.90.0-candidate-3/<http://people.apache.org/%7Estack/hbase-0.90.0-candidate-3/>
> >
> > This is going to be the one!
> >
> > Should we release this candidate as hbase 0.90.0?  Take it for a spin.
> > Check out the doc., etc.  Vote +1/-1 by next Friday, the 14th of January.
> >
> > HBase 0.90.0 is the major HBase release that follows 0.20.0 and the
> > fruit of the 0.89.x development release series we've been running of
> > late.
> >
> > Over 1k issues have been closed since 0.20.0.  Release notes are
> > available here: http://su.pr/8LbgvK.
> >
> > HBase 0.90.0 runs on Hadoop 0.20.x.  It does not currently run on
> > Hadoop 0.21.0 nor on Hadoop TRUNK.   HBase will lose data unless it is
> > running on an Hadoop HDFS 0.20.x that has a durable sync. Currently
> > only the branch-0.20-append branch [1] has this attribute (See
> > CHANGES.txt [3] in branch-0.20-append to see the list of patches
> > involved adding an append). No official releases have been made from
> > this branch as yet so you will have to build your own Hadoop from the
> > tip of this branch, OR install Cloudera's CDH3 [2] (Its currently in
> > beta).  CDH3b2 or CDHb3 have the 0.20-append patches needed to add a
> > durable sync. If using CDH, be sure to replace the hadoop jars that
> > are bundled with HBase with those from your CDH distribution.
> >
> > There is no migration necessary.  Your data written with HBase 0.20.x
> > (or with HBase 0.89.x) is readable by HBase 0.90.0.  A shutdown and
> > restart after putting in place the new HBase should be all thats
> > involved.  That said, once done, there is no going back to 0.20.x once
> > the transition has been made.   HBase 0.90.0 and HBase 0.89.x write
> > region names differently in the filesystem.  Rolling restart from
> > 0.20.x or 0.89.x to 0.90.0RC1 will not work.
> >
> > Yours,
> > The HBasistas
> > P.S. For why the version 0.90 and whats new in HBase 0.90, see slides
> > 4-10 in this deck [4]
> >
> > 1.
> http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append
> > 2. http://archive.cloudera.com/docs/
> > 3.
> http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-append/CHANGES.txt
> > 4. http://hbaseblog.com/2010/07/04/hug11-hbase-0-90-preview-wrap-up/
> >
>

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