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
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