Release 1.2.1 of Slony-I has the following improvements over 1.2.0:
- Added a SYNC slonik command to allow requesting a SYNC event.
This is a more useful thing to wait for than a SUBSCRIBE SET.
- MERGE SET now refuses to be applied if a subscriber has not
yet confirmed post-subscription events
- Added a SLEEP slonik command to allow writing code that tells
the script to pause for some number of seconds
- Fixed a concurrency problem where if you had multiple log
shipped nodes, the threads processing them shared a single
file descriptor as well as other variables.
- If a child process exits with return code of 0, that means it
*asked* to exit, presumably because configuration changed that it
needs to reload. In that case, there's no need to wait 10s before
restarting the thread; we should restart the thread immediately.
This causes operations like MOVE SET to run ~10s faster per
subscription change.
- Added a script, tools/release_checklist.sh, which performs some of
the release checklist checks, such as verifying that the Slony-I
version number (e.g. - 1.2.1) is consistent across various places
that need to reference it.
- altperl scripts have had "listen path" generation removed as that is
handled automatically as clusters are built.
- Fixed some portability problems in tools/launch_cluster.sh
- Added a new script, tools/search_logs.sh, meant to search hourly for
errors in slon logs and warn an administrator about them.
