0.7 roadmap

[Jonathan Ellis <jb...@gmail.com>]

0.7 has been coming along at the same time that we've been releasing
updates for 0.6 (0.6.2 coming soon).

Some things look familiar from our first projected 0.7 roadmap [1] but
some do not.  (This is why when people ask me what new features
Cassandra will have in six months, I have trouble answering; even in
two months plans change.)

Features completed as expected:
  1. online schema (keyspace + CF) changes
  2. change row keys from String to byte[]
  3. truncation support
  4. expiring column support
  5. configuration format moved to yaml
  6. DatacenterShardStrategy finished (with ConsistencyLevel.DCQUORUM
and DCQUORUMSYNC)

Features that are not yet finished but will probably work out more or
less as predicted:
  1. vector clock support
  2. avro support (note that "as predicted" for avro means "it will be
alpha/beta-ish," not that it will be a stable api for 0.7)
  3. support for wide rows (changes row width in the storage format
from 32bits to 64; reading old-format files will be supported)
  4. improved JVM defaults for garbage collection

Features that we are re-evaluating for 0.8:
  1. rewrite of storage engine to support arbitrarily nested columns

Features that we did not originally expect to do in 0.7, but are now
looking like they will happen:
  1. secondary indexes

For more detail, you can look at the trunk CHANGES file [2], the jira
completed-for-0.7 list [3] and the jira pending-for-0.7 list [4].

At this point I think we are 4-6 weeks away from a 0.7 beta.

[1] http://www.mail-archive.com/cassandra-dev@incubator.apache.org/msg01512.html
[2] http://svn.apache.org/repos/asf/cassandra/trunk/CHANGES.txt
[3] https://issues.apache.org/jira/secure/IssueNavigator.jspa?mode=hide&requestId=12314300
[4] https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&mode=hide&sorter/order=DESC&sorter/field=priority&resolution=-1&pid=12310865&fixfor=12314533

-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com

Re: 0.7 roadmap

[gabriele renzi <rf...@gmail.com>]

On Wed, May 19, 2010 at 9:03 AM, Ken Sandney <bl...@gmail.com> wrote:
> Where can I find more details about secondary indexes?

this shouId be the relevant ticket
https://issues.apache.org/jira/browse/CASSANDRA-749

Re: 0.7 roadmap

[Ken Sandney <bl...@gmail.com>]

Where can I find more details about secondary indexes?

On Wed, May 19, 2010 at 10:07 AM, Jonathan Ellis <jb...@gmail.com> wrote:

> 0.7 has been coming along at the same time that we've been releasing
> updates for 0.6 (0.6.2 coming soon).
>
> Some things look familiar from our first projected 0.7 roadmap [1] but
> some do not.  (This is why when people ask me what new features
> Cassandra will have in six months, I have trouble answering; even in
> two months plans change.)
>
> Features completed as expected:
>  1. online schema (keyspace + CF) changes
>  2. change row keys from String to byte[]
>  3. truncation support
>  4. expiring column support
>  5. configuration format moved to yaml
>  6. DatacenterShardStrategy finished (with ConsistencyLevel.DCQUORUM
> and DCQUORUMSYNC)
>
> Features that are not yet finished but will probably work out more or
> less as predicted:
>  1. vector clock support
>  2. avro support (note that "as predicted" for avro means "it will be
> alpha/beta-ish," not that it will be a stable api for 0.7)
>  3. support for wide rows (changes row width in the storage format
> from 32bits to 64; reading old-format files will be supported)
>  4. improved JVM defaults for garbage collection
>
> Features that we are re-evaluating for 0.8:
>  1. rewrite of storage engine to support arbitrarily nested columns
>
> Features that we did not originally expect to do in 0.7, but are now
> looking like they will happen:
>  1. secondary indexes
>
> For more detail, you can look at the trunk CHANGES file [2], the jira
> completed-for-0.7 list [3] and the jira pending-for-0.7 list [4].
>
> At this point I think we are 4-6 weeks away from a 0.7 beta.
>
> [1]
> http://www.mail-archive.com/cassandra-dev@incubator.apache.org/msg01512.html
> [2] http://svn.apache.org/repos/asf/cassandra/trunk/CHANGES.txt
> [3]
> https://issues.apache.org/jira/secure/IssueNavigator.jspa?mode=hide&requestId=12314300
> [4]
> https://issues.apache.org/jira/secure/IssueNavigator.jspa?reset=true&mode=hide&sorter/order=DESC&sorter/field=priority&resolution=-1&pid=12310865&fixfor=12314533
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of Riptano, the source for professional Cassandra support
> http://riptano.com
>