Return-Path: X-Original-To: apmail-cassandra-user-archive@www.apache.org Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id B4F1873FD for ; Mon, 29 Aug 2011 13:11:16 +0000 (UTC) Received: (qmail 46940 invoked by uid 500); 29 Aug 2011 13:11:14 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 46788 invoked by uid 500); 29 Aug 2011 13:11:13 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 46780 invoked by uid 99); 29 Aug 2011 13:11:12 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Aug 2011 13:11:12 +0000 X-ASF-Spam-Status: No, hits=-0.7 required=5.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of jbellis@gmail.com designates 209.85.215.170 as permitted sender) Received: from [209.85.215.170] (HELO mail-ey0-f170.google.com) (209.85.215.170) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Aug 2011 13:11:02 +0000 Received: by eyd10 with SMTP id 10so85429eyd.1 for ; Mon, 29 Aug 2011 06:10:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; bh=KybBSLzsXD0XJMlwE/cSBcYQOovVYEBqUYgwUfxEVo8=; b=DHhiDdqievKt+zhrhCOYf7SX7dN7N/RBAY4efgaht4iQNAy5EIW5L3F2K0Py/0uo3i mcYxC3ExpBwK7yx0m6Lpzk+5pmuarwFnVGXeb2kX2Nm3I218sbitiBH6+cz5JgeEI+kW FTH8wSOJl8ZtrloYv8vs4g7hL6a48fsHyIcO0= Received: by 10.213.113.212 with SMTP id b20mr489916ebq.71.1314623439148; Mon, 29 Aug 2011 06:10:39 -0700 (PDT) MIME-Version: 1.0 Received: by 10.213.108.83 with HTTP; Mon, 29 Aug 2011 06:10:18 -0700 (PDT) In-Reply-To: <7506C99D83A0A54F8127A4931F6CF0B006C719DB0A@IE2RD2XVS531.red002.local> References: <7506C99D83A0A54F8127A4931F6CF0B006C719DB0A@IE2RD2XVS531.red002.local> From: Jonathan Ellis Date: Mon, 29 Aug 2011 08:10:18 -0500 Message-ID: Subject: Re: flushwriter all time blocked To: user@cassandra.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable 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 wr= ote: > 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 K=F6ln > > > > +49 221 4544151 (Tel) > > +49 221 4544159 (Fax) > > +49 171 7894057 (Mobil) > > > > > > Email:=A0roland.gude@yoochoose.com > > WWW: www.yoochoose.com > > > > YOOCHOOSE GmbH > > Gesch=E4ftsf=FChrer: Dr. Uwe Alkemper, Michael Friedmann > > Handelsregister: Amtsgericht K=F6ln HRB 65275 > > Ust-Ident-Nr: DE 264 773 520 > > Sitz der Gesellschaft: K=F6ln > > --=20 Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com