Re: Thread locking while merging (ConcurrentMergeScheduler issue?)

2011-08-03 Thread Pierre-Henri Toussaint
OK so the problem definitely comes from the slow merging. I slightly increased the number merge count and thread to avoid the problem described previously. But as expected, it just delayed it ! results : 75 minutes to index the 33GB xml file, and 150 minutes to finish the merge after indexer.close

Re: Thread locking while merging (ConcurrentMergeScheduler issue?)

2011-08-03 Thread Pierre-Henri Toussaint
Hello, First many thanks for getting in touch. Michael McCandless-2 wrote: > > It looks like merging is running too slowly in your environment, > relative to indexing; all of your indexing threads are stuck wanting > to launch a new merge but there's already the max allowed (1) > concurrent mer

Re: Thread locking while merging (ConcurrentMergeScheduler issue?)

2011-08-03 Thread Pierre-Henri Toussaint
I tried to switch back to Lucene 3.2.0, same configuration, and I encountered the same problem, be at a later stage. See http://piratepad.net/ep/pad/export/ro.kMgHIoReJ2w/rev.2?format=txt here the thread dump . -- View this message in context: http://lucene.472066.n3.nabble.com/Thread-locking-w

Thread locking and extreme low perfs while merging (ConcurrentMergeScheduler issue ?

2011-08-03 Thread Pierre-Henri Toussaint
Hi All, I'm currently testing the new DocumentsWriterPerThread in Lucene 4.0.0 (latest build). I use the wikipedia full english article dump as a source for indexing and the ThreadedIndexWriter implementation proposed in LIA to achieve concurrent indexing. Indexing performance seems good at the be