The Slony team is pleased to announce the release of the fourth beta for 
Slony 2.2.0.

Slony 2.2.0 will be the next major release of the Slony-I replication 
system for PostgreSQL.

Key features of the 2.2.0 release include:

* The storage and transport and application of the slony log 
(sl_log_1/sl_log_2) has changed providing performance improvements. Data 
is now stored in a different format and the postgresql COPY protocol and 
triggers are used to replicate and apply changes to replicas.

* DDL handling with the EXECUTE SCRIPT command has changed.  The DDL is 
no longer stored as a special event in sl_event but is instead stored in 
sl_log_script and is processed as part of a SYNC event inline with data 
changes. DDL can also be specified inline

* FAILOVER has been reworked to be more reliable but not all nodes can 
be used as failover targets.

* A RESUBSCRIBE NODE command was added because the provider of a 
subscribed set can no longer be changed with the SUBSCRIBE SET command 
in some cases.  All sets from a particular origin must send data to 
receivers through the same path/forwarder nodes. This must remain  true 
during cluster reshaping.

This beta 4 adds support for PG 9.3 so you can beta test both slony 
2.2.0 and postgresql 9.3 betas at the same time.

See the release notes for details and changes from the last beta

The release notes are available at

http://git.postgresql.org/gitweb/?p=slony1-engine.git;a=blob_plain;f=RELEASE;h=be03be66d8f39ee148b50dadf71ddbe20a1e5ad8;hb=e3e785c93d14b009abc8424fa7e53e8b75c0f098

Slony-I 2.2.0 beta 4 can be downloaded from:

http://www.slony.info/downloads/2.2/source/slony1-2.2.0.b4.tar.bz2
http://www.slony.info/downloads/2.2/source/slony1-2.2.0.b4-docs.tar.bz2

This release is a beta release. Users are encouraged to try the release 
out and report bugs.

I would like people who test this beta to report both successes and bugs 
to me, either on the slony mailing lists or through private email.  Test 
this beta, report your results to me and earn Slony karma points.

Thanks


Steve