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From Maxim Potekhin <potek...@bnl.gov>
Subject Re: [RELEASE] Apache Cassandra 1.0 released
Date Tue, 18 Oct 2011 12:29:06 GMT
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
>>


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