On 12/18/2012 8:18 PM, Jam Luo wrote: > I deployed a solr-4.0-beta cluster, 4 shard, 2 peers in a shard. A peer > catch exception: > 十二月 18, 2012 7:56:31 下午 org.apache.solr.common.SolrException log > 严重: null:java.lang.RuntimeException: java.lang.OutOfMemoryError: unable to > create new native thread
Let me start off this reply by saying that I have *no* concrete proof about this, what I'm saying could be completely wrong. Are you by chance running Java 1.7.0_09? I was having *lots* of problems on my Solr server with multiple programs hitting OOM errors when trying to create threads. Some of those programs are things that can normally run for weeks at a time with extremely low heap requirements and a very high max heap. Here's an example stacktrace with the company name redacted: Thread c threw an exception java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.start0(Native Method) at java.lang.Thread.start(Thread.java:691) at com.REDACTED.idxbuild.solr.Chain.deleteByQuery(Chain.java:827) at com.REDACTED.idxbuild.solr.Chain.doDelete(Chain.java:1031) at com.REDACTED.idxbuild.solr.Chain.updateIndex(Chain.java:1923) at com.REDACTED.idxbuild.solr.Chain.run(Chain.java:2081) These problems went away when I upgraded Oracle Java to from 1.7.0_09 to 1.7.0_10. Thanks, Shawn
