Hi, This still leaves me puzzled.
Is it a bad thing? Why is it happening? And what does "blocked before being accepted" mean? Does it mean Cassandra did not even try to put the task into a queue? Thanks for enlightening me, roland -----Ursprüngliche Nachricht----- Von: Jonathan Ellis [mailto:jbel...@gmail.com] Gesendet: Montag, 29. August 2011 15:10 An: user@cassandra.apache.org Betreff: Re: flushwriter all time blocked the javadoc for the mbeans explains: /** * Get the number of tasks that had blocked before being accepted (or * rejected). */ public int getTotalBlockedTasks(); /** * Get the number of tasks currently blocked, waiting to be accepted by * the executor (because all threads are busy and the backing queue is full). */ public int getCurrentlyBlockedTasks(); On Mon, Aug 29, 2011 at 3:39 AM, Roland Gude <roland.g...@yoochoose.com> wrote: > Hi all, > > > > On a 0.7.8 cluster In tpstats i can see flushwriter stage having several > tasks in state all-time-blocked (immendiatly after node restart its 8 but > grows over time to around 300). What does it mean (or how can I find out) > and what can I do about it? > > > > -- > > YOOCHOOSE GmbH > > > > Roland Gude > > Software Engineer > > > > Im Mediapark 8, 50670 Köln > > > > +49 221 4544151 (Tel) > > +49 221 4544159 (Fax) > > +49 171 7894057 (Mobil) > > > > > > Email: roland.g...@yoochoose.com > > WWW: www.yoochoose.com > > > > YOOCHOOSE GmbH > > Geschäftsführer: Dr. Uwe Alkemper, Michael Friedmann > > Handelsregister: Amtsgericht Köln HRB 65275 > > Ust-Ident-Nr: DE 264 773 520 > > Sitz der Gesellschaft: Köln > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
