On Mon, May 06, 2019 at 11:50:15AM +0300, Alan Orth wrote: > I'm still experiencing sporadic occurrences of the "Error opening new > searcher" issue with the Solr statistics core. In our case Tomcat always > shuts down cleanly, and even so, manually deleting the write locks before > Tomcat startup doesn't seem to help. Thinking about this a bit more, it > sounds plausible to me that high load or slow disks could indeed cause a > timeout waiting for a write lock with large Solr cores. Our server has an > SSD, but is indeed busy, and we have nine years of statistics with hundreds > of millions of events. > > Some Solr parameter that seems like it should help is writeLockTimeout. The > default in solrconfig.xml is 1000ms (1 sec). I tried setting it to 5000 and > 10000, neither of which helped. Should I try to bump this setting up to > some obscenely high value? Could there be another factor here, like JVM > heap size or settings? Happy to discuss experiences others are having.
It may be time to ask on the Solr users' ML (solr-u...@lucene.apache.org). They may at least know better than, for example, I which classes' logging would be the most useful to increase. > P.S. I've been running Solr 4.10.4 in DSpace 5.8 production for over one > month now (versus 4.10.2 in DSpace pom.xml). That's useful to know. Thanks! -- Mark H. Wood Lead Technology Analyst University Library Indiana University - Purdue University Indianapolis 755 W. Michigan Street Indianapolis, IN 46202 317-274-0749 www.ulib.iupui.edu -- All messages to this mailing list should adhere to the DuraSpace Code of Conduct: https://duraspace.org/about/policies/code-of-conduct/ --- You received this message because you are subscribed to the Google Groups "DSpace Technical Support" group. To unsubscribe from this group and stop receiving emails from it, send an email to dspace-tech+unsubscr...@googlegroups.com. To post to this group, send email to dspace-tech@googlegroups.com. Visit this group at https://groups.google.com/group/dspace-tech. To view this discussion on the web visit https://groups.google.com/d/msgid/dspace-tech/20190510183609.GB16571%40IUPUI.Edu. For more options, visit https://groups.google.com/d/optout.
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