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From aaron morton <aa...@thelastpickle.com>
Subject Re: [RELEASE] Apache Cassandra 1.0 released
Date Tue, 18 Oct 2011 20:40:55 GMT
Thanks all. 

-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 19/10/2011, at 2:45 AM, Jonathan Ellis wrote:

> Multiple concurrent schema modifications are not supported in 1.0.
> https://issues.apache.org/jira/browse/CASSANDRA-1391 is open to add
> this in 1.1.
> 
> On Tue, Oct 18, 2011 at 8:27 AM, Dikang Gu <dikang85@gmail.com> wrote:
>> Congrats!
>> In 0.8, the schema disagreement occurs sometimes when I create
>> keyspaces/column families dynamically, is this also fixed?
>> Regards.
>> 
>> On Tue, Oct 18, 2011 at 9:20 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>> 
>>> Short version: yes, 1.0 addresses the known repair problems.
>>> 
>>> On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <potekhin@bnl.gov> wrote:
>>>> There was a problem in early 0.8 where the repair was taking
>>>> forever -- am I right to assume this was fixed in 1.0?
>>>> 
>>>> Many thanks to you guys,
>>>> 
>>>> Maxim
>>>> 
>>>> 
>>>> On 10/18/2011 2:25 PM, Thibaut Britz wrote:
>>>>> 
>>>>> Great news!
>>>>> 
>>>>> Especially the improved read performance and compactions are great!
>>>>> 
>>>>> Thanks,
>>>>> Thibaut
>>>>> 
>>>>> 
>>>>> On Tue, Oct 18, 2011 at 2:11 PM, Jonathan Ellis<jbellis@gmail.com>
>>>>>  wrote:
>>>>>> 
>>>>>> Thanks for the help, everyone!  This is a great milestone for
>>>>>> Cassandra.
>>>>>> 
>>>>>> On Tue, Oct 18, 2011 at 7:01 AM, Sylvain
>>>>>> Lebresne<sylvain@datastax.com>
>>>>>>  wrote:
>>>>>>> 
>>>>>>> The Cassandra team is very pleased to announce the release of
Apache
>>>>>>> Cassandra
>>>>>>> version 1.0.0. Cassandra 1.0.0 is a new major release that build
upon
>>>>>>> the
>>>>>>> awesomeness of previous versions and adds numerous improvements[1,2],
>>>>>>> amongst
>>>>>>> which:
>>>>>>>  - Compression of on-disk data files (SSTables), with checksummed
>>>>>>> blocks
>>>>>>> to
>>>>>>>    protect against bitrot[4].
>>>>>>>  - Improvements to memory management through off-heap caches,
arena
>>>>>>>    allocation and automatic self-tuning, for less GC pauses and
more
>>>>>>>    predictable performances[5].
>>>>>>>  - Better disk-space management: better control of the space
taken by
>>>>>>> commit
>>>>>>>    logs and immediate deletion of obsolete data files.
>>>>>>>  - New optional leveled compaction strategy with more predictable
>>>>>>> performance
>>>>>>>    and fixed sstable size[6].
>>>>>>>  - Improved hinted handoffs, leading to less need for read repair
for
>>>>>>>    better read performances.
>>>>>>>  - Lots of improvements to performance[7], CQL, repair, easier
>>>>>>> operation,
>>>>>>>    etc[8]...
>>>>>>> 
>>>>>>> And as is the rule for some time now, rolling upgrades from previous
>>>>>>> versions
>>>>>>> are supported, so there is nothing stopping you to get all those
>>>>>>> goodies
>>>>>>> right
>>>>>>> now!
>>>>>>> 
>>>>>>> Both source and binary distributions of Cassandra 1.0.0 can be
>>>>>>> downloaded at:
>>>>>>> 
>>>>>>>  http://cassandra.apache.org/download/
>>>>>>> 
>>>>>>> Or you can use the debian package available from the project
APT
>>>>>>> repository[3]
>>>>>>> (you will need to use the 10x series).
>>>>>>> 
>>>>>>> The download page also link to the CQL drivers that, from this
>>>>>>> release
>>>>>>> on, are
>>>>>>> maintained out of tree[9].
>>>>>>> 
>>>>>>> 
>>>>>>> That's all folks!
>>>>>>> 
>>>>>>> [1]: http://goo.gl/t3qpw (CHANGES.txt)
>>>>>>> [2]: http://goo.gl/6t0qN (NEWS.txt)
>>>>>>> [3]: http://wiki.apache.org/cassandra/DebianPackaging
>>>>>>> [4]:
>>>>>>> 
>>>>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-compression
>>>>>>> [5]:
>>>>>>> 
>>>>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-improved-memory-and-disk-space-management
>>>>>>> [6]:
>>>>>>> 
>>>>>>> http://www.datastax.com/dev/blog/leveled-compaction-in-apache-cassandra
>>>>>>> [7]:
>>>>>>> 
>>>>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-performance
>>>>>>> [8]:
>>>>>>> 
>>>>>>> http://www.datastax.com/dev/blog/whats-new-in-cassandra-1-0-windows-service-new-cql-clients-and-more
>>>>>>> [9]: http://acunu.com/blogs/eric-evans/cassandra-drivers-released/
>>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> --
>>>>>> Jonathan Ellis
>>>>>> Project Chair, Apache Cassandra
>>>>>> co-founder of DataStax, the source for professional Cassandra support
>>>>>> http://www.datastax.com
>>>>>> 
>>>> 
>>>> 
>>> 
>>> 
>>> 
>>> --
>>> Jonathan Ellis
>>> Project Chair, Apache Cassandra
>>> co-founder of DataStax, the source for professional Cassandra support
>>> http://www.datastax.com
>> 
>> 
>> 
>> --
>> Dikang Gu
>> 0086 - 18611140205
>> 
> 
> 
> 
> -- 
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com


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