We get at rare times out of memory errors during the day. I know one reason for this is data imports, none are going on. I see in the wiki, document adds have some quirks, not doing that. I don't know to to expect for memory use though.
We had Solr running under Tomcat set to 2G ram. I presume cache size has an effect on memory, that's set to 30,000 for filter, document and queryResult. Have experimented with different sizes for a while, these limits are all lower than we used to have them set to. So, hoping there no sort of memory leak involved. In any case, some of the messages are: Exception in thread "http-8080-21" java.lang.OutOfMemoryError: Java heap space Some look like this: Exception in thread "http-8080-22" java.lang.NullPointerException at java.util.concurrent.ConcurrentLinkedQueue.offer(ConcurrentLinkedQueue.java:273) ... I presume the null pointer is a result of being out of memory. Should Solr possibly need more than 2GB? What else can we tune that might reduce memory usage?
