With the upgrade you essentially have another webapp running, i.e. SOLR, which means your instance will need more memory. More for when doing a lot of work, and more to be permanently used i.e "permgen". When I've performed large batch processing (converting and importing old log files), I've bumped up my max memory for tomcat/java and increased the permgen. I'm not sure if there is something triggering solr to jump "over the edge" in your case, but after I've allocated more memory to java/tomcat, problems just go away.
Thus for me it would be: edit /etc/init.d/tomcat6 JAVA_OPTS="-Djava.awt.headless=true -Xmx1536M *-XX:MaxPermSize=128m*" or, however you normally set JAVA_OPTS Peter Dietz Systems Developer/Engineer Ohio State University Libraries On Thu, May 6, 2010 at 11:41 AM, Anderson, Charles W < bill.ander...@library.gatech.edu> wrote: > We're on our second attempt to upgrade from 1.5.2 to 1.6. We have been > plagued with m > memory errors both times, and we' think we've narrowed it down to something > that's going > on in the solr webapp. We've got solr running in it's very own Tomcat > instance; which has > helped, but hasn't completely eliminated the problems. > > Just before we crash, we're seeing lots and lots of the following in the > dspace log: > > org.apache.solr.common.SolrException: Internal Server Error > > Then, eventually, we start getting this: > > org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, > pool error: Timeout waiting for idle object > > Meanwhile, over in catalina.out, we have these, which seem to correspond to > the solr errors in the dspace log: > > SEVERE: org.apache.solr.common.SolrException: Error opening new > searcher. exceeded limit of maxWarmingSearchers=2, try again later. > > And, eventually, the voice of doom: > > Exception in thread "TP-Processor550" java.lang.OutOfMemoryError: > PermGen space > > Has anybody else experience memory issues related to solr? > > Thanks, > > Bill > > > > Bill Anderson > Software Developer > Digital Library Development > Georgia Tech Library > > > ------------------------------------------------------------------------------ > _______________________________________________ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech >
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