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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