Tue Jun 20 15:11:35 PDT 2006
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Log Message:
-----------
Release Notes: Add in discussion of "slon not fall over easy no more"
Modified Files:
--------------
slony1-engine:
RELEASE-1.2.0 (r1.4 -> r1.5)
-------------- next part --------------
Index: RELEASE-1.2.0
===================================================================
RCS file: /usr/local/cvsroot/slony1/slony1-engine/RELEASE-1.2.0,v
retrieving revision 1.4
retrieving revision 1.5
diff -LRELEASE-1.2.0 -LRELEASE-1.2.0 -u -w -r1.4 -r1.5
--- RELEASE-1.2.0
+++ RELEASE-1.2.0
@@ -64,6 +64,22 @@
A group of developers has contributed changes to allow running
Slony-I as a Windows service.
+- Process structure is revised considerably; in 1.1.0, an attempt was
+ made to create an internal 'watchdog' that would restart threads
+ that fell over for whatever reason.
+
+ In 1.2, this is massively revised. The "main" slon thread should,
+ as of 1.2, never fall down, which means that there should no longer
+ be a need for watchdog processes to watch carefully.
+
+ This makes slon very much less fragile than it was in earlier
+ versions. This may revise how you want to start it up... In the
+ past, slon processes tended to fall over easily, mandating having
+ some form of "watchdog." The new behaviour points more towards
+ "init" / "rc.d"-like handling, where, upon bootup, one "rc.d" script
+ might start up PostgreSQL, another one starts pgpool, and a third
+ (which must run third!) starts up a slon.
+
- Subscribe set aggressively locks tables on the subscriber to avoid
failures
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