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From Ryan Rawson <ryano...@gmail.com>
Subject Re: ANN: The fourth hbase 0.90.0 release candidate is available for download X
Date Fri, 14 Jan 2011 22:18:14 GMT
Hey,

It's a pretty unusual situation that got you into 3445?  It's been a
few weeks of RCs, and we need to push out a 0.90.0 so everyone can
benefit from it.  We can release point releases fairly quickly once a
stable base release is out, does that sound reasonable to you?

Thanks for testing!
-ryan

On Fri, Jan 14, 2011 at 2:14 PM, James Kennedy <james.kennedy@troove.net> wrote:
> -1 for the following bug:
>
> https://issues.apache.org/jira/browse/HBASE-3445
>
> Note however that aside from this issue RC 3 looks pretty stable:
>
> * All HBase tests pass (on a Mac)
> * All hbase-trx tests pass after I upgraded https://github.com/hbase-trx/hbase-transactional-tableindexed
> * All tests pass in our web app.
> * Our application performs well on local machine.
>
> * Still todo after 3445 fixed:  Full cluster testing
>
>
> James Kennedy
>
> On 2011-01-07, at 5:03 PM, Stack wrote:
>
>> The fourth hbase 0.90.0 release candidate is available for download:
>>
>> http://people.apache.org/~stack/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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