We've been trying to get a setup in which a slave replicates from a master every few seconds (ideally every second but currently we have it set at every 5s).
Everything seems to work fine until, periodically, the slave just stops responding from what looks like it running out of memory: org.apache.catalina.core.StandardWrapperValve invoke SEVERE: Servlet.service() for servlet jsp threw exception java.lang.OutOfMemoryError: Java heap space (our monitoring seems to confirm this). Looking around my suspicion is that it takes new Readers longer to warm than the gap between replication and thus they just build up until all memory is consumed (which, I suppose isn't really memory 'leaking' per se, more just resource consumption) That said, we've tried turning off caching on the slave and that didn't help either so it's possible I'm wrong. Is there anything we can do about this? I'm reluctant to increase the heap space since I suspect that will mean that there's just a longer period between failures. Might Zoie help here? Or should we just query against the Master? Thanks, Simon
