You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@cassandra.apache.org by Sylvain Lebresne <sy...@datastax.com> on 2011/10/18 14:01:37 UTC
[RELEASE] Apache Cassandra 1.0 released
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/
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Brian O'Neill <bo...@alumni.brown.edu>.
1.0 FTW!
Nice work.
-brian
On Tue, Oct 18, 2011 at 8:32 AM, Viktor Jevdokimov <
Viktor.Jevdokimov@adform.com> wrote:
> Congrats!!!
>
>
> Best regards/ Pagarbiai
>
> Viktor Jevdokimov
> Senior Developer
>
> Email: Viktor.Jevdokimov@adform.com
> Phone: +370 5 212 3063
> Fax: +370 5 261 0453
>
> J. Jasinskio 16C,
> LT-01112 Vilnius,
> Lithuania
>
>
>
> Disclaimer: The information contained in this message and attachments is
> intended solely for the attention and use of the named addressee and may be
> confidential. If you are not the intended recipient, you are reminded that
> the information remains the property of the sender. You must not use,
> disclose, distribute, copy, print or rely on this e-mail. If you have
> received this message in error, please contact the sender immediately and
> irrevocably delete this message and any copies.-----Original Message-----
> From: Sylvain Lebresne [mailto:sylvain@datastax.com]
> Sent: Tuesday, October 18, 2011 15:02
> To: user@cassandra.apache.org
> Subject: [RELEASE] Apache Cassandra 1.0 released
>
> 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/
>
>
>
--
Brian ONeill
Lead Architect, Health Market Science (http://healthmarketscience.com)
mobile:215.588.6024
blog: http://weblogs.java.net/blog/boneill42/
blog: http://brianoneill.blogspot.com/
RE: [RELEASE] Apache Cassandra 1.0 released
Posted by Viktor Jevdokimov <Vi...@adform.com>.
Congrats!!!
Best regards/ Pagarbiai
Viktor Jevdokimov
Senior Developer
Email: Viktor.Jevdokimov@adform.com
Phone: +370 5 212 3063
Fax: +370 5 261 0453
J. Jasinskio 16C,
LT-01112 Vilnius,
Lithuania
Disclaimer: The information contained in this message and attachments is intended solely for the attention and use of the named addressee and may be confidential. If you are not the intended recipient, you are reminded that the information remains the property of the sender. You must not use, disclose, distribute, copy, print or rely on this e-mail. If you have received this message in error, please contact the sender immediately and irrevocably delete this message and any copies.-----Original Message-----
From: Sylvain Lebresne [mailto:sylvain@datastax.com]
Sent: Tuesday, October 18, 2011 15:02
To: user@cassandra.apache.org
Subject: [RELEASE] Apache Cassandra 1.0 released
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/
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by aaron morton <aa...@thelastpickle.com>.
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 <di...@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 <jb...@gmail.com> wrote:
>>>
>>> Short version: yes, 1.0 addresses the known repair problems.
>>>
>>> On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <po...@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<jb...@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<sy...@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
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Jonathan Ellis <jb...@gmail.com>.
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 <di...@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 <jb...@gmail.com> wrote:
>>
>> Short version: yes, 1.0 addresses the known repair problems.
>>
>> On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <po...@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<jb...@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<sy...@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
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Dikang Gu <di...@gmail.com>.
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 <jb...@gmail.com> wrote:
> Short version: yes, 1.0 addresses the known repair problems.
>
> On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <po...@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<jb...@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
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Jonathan Ellis <jb...@gmail.com>.
Short version: yes, 1.0 addresses the known repair problems.
On Tue, Oct 18, 2011 at 7:29 AM, Maxim Potekhin <po...@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<jb...@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<sy...@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
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Maxim Potekhin <po...@bnl.gov>.
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<jb...@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<sy...@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
>>
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Thibaut Britz <th...@trendiction.com>.
Great news!
Especially the improved read performance and compactions are great!
Thanks,
Thibaut
On Tue, Oct 18, 2011 at 2:11 PM, Jonathan Ellis <jb...@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 <sy...@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
>
Re: [RELEASE] Apache Cassandra 1.0 released
Posted by Jonathan Ellis <jb...@gmail.com>.
Thanks for the help, everyone! This is a great milestone for Cassandra.
On Tue, Oct 18, 2011 at 7:01 AM, Sylvain Lebresne <sy...@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