From users-return-13482-apmail-activemq-users-archive=activemq.apache.org@activemq.apache.org Mon Apr 07 08:41:37 2008 Return-Path: Delivered-To: apmail-activemq-users-archive@www.apache.org Received: (qmail 18773 invoked from network); 7 Apr 2008 08:41:37 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 7 Apr 2008 08:41:37 -0000 Received: (qmail 30990 invoked by uid 500); 7 Apr 2008 08:41:36 -0000 Delivered-To: apmail-activemq-users-archive@activemq.apache.org Received: (qmail 30968 invoked by uid 500); 7 Apr 2008 08:41:36 -0000 Mailing-List: contact users-help@activemq.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: users@activemq.apache.org Delivered-To: mailing list users@activemq.apache.org Received: (qmail 30959 invoked by uid 99); 7 Apr 2008 08:41:36 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 07 Apr 2008 01:41:36 -0700 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of bdhruba@gmail.com designates 64.233.178.241 as permitted sender) Received: from [64.233.178.241] (HELO hs-out-0708.google.com) (64.233.178.241) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 07 Apr 2008 08:40:55 +0000 Received: by hs-out-0708.google.com with SMTP id j58so1025774hsj.6 for ; Mon, 07 Apr 2008 01:40:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; bh=0j9oz4Hx5c4U+5kVECDnx480cwWU04MwTl72AnH9/UM=; b=C3NeOnNObjjAr5uCnyGkaI14BBD4yw+dA37NbMWwqWEZpi1TZhcuQ5r+Xabz6e4CN0vb+69lfv88WA+xMRUS/TmEfmZ+nB854B3YLvWABoXeQGYvMm5S+nSW5roy/Xq2beewKBRZZYmwD5Md6w6ExC2B4hIegX7Bwu/QF1T0pHo= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references; b=XxMMj1ZOg45bA1Vx55SrdKcIqCkICp/qCS0XAl4JVf6Ur5GvcT4QkNlUp1oKr3JFqygBUEaPOxoxx7BrER6oOxEk7XNSjVgEG0XT65OlPB2nYIC1mDCPlfnSnfeLfxQBRBF63hPZZ1LWmYfq1ooEw6oWGUM5TSKDowtEvtC2kIc= Received: by 10.100.202.9 with SMTP id z9mr2608088anf.134.1207557630982; Mon, 07 Apr 2008 01:40:30 -0700 (PDT) Received: by 10.100.225.3 with HTTP; Mon, 7 Apr 2008 01:40:30 -0700 (PDT) Message-ID: <2baa4b190804070140g6c426731g9ebed2e41ed07351@mail.gmail.com> Date: Mon, 7 Apr 2008 09:40:30 +0100 From: "Dhruba Bandopadhyay" To: users@activemq.apache.org Subject: Re: Single message unconsumed In-Reply-To: <2baa4b190804070119w73a9b15cn491345eaf5fec809@mail.gmail.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_22348_10358555.1207557630741" References: <2baa4b190804070119w73a9b15cn491345eaf5fec809@mail.gmail.com> X-Virus-Checked: Checked by ClamAV on apache.org ------=_Part_22348_10358555.1207557630741 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline I've attached a grep of one of the consumer log files. It seems that the derby backend may have been the problem with regard to locking. It seems that over a period of time under high number of messages derby gets confused. What alternatives do I have? My attempt to use mysql as a backend with activem4.1.1 failed with the unrecognized tag mapping error (which I posted on here with no response). My attempt to use mysql as a backend with activemq5.0.0 succeeded but it tripled the production time and doubled total consumption time. Also 5.0.0 (just like fmb-5.0.0.9) has the 'could not recover message from data store' problem which makes it a non-option anyway. Any recommendations? I feel I'm at a dead end somewhat and would really appreciate some help. Thanks. On Mon, Apr 7, 2008 at 9:19 AM, Dhruba Bandopadhyay wrote: > Hi, > > Frequently during my tests I've noticed that they complete to 99%. > That is to say that frequently one single message remains unconsumed > on the broker queue. The consumers seem fine and I don't see any > errors. > > What are the usual reasons for this happening? I am using Spring > 2.5.2 and ActiveMQ 4.1.1. This is quite unsettling as it is obviously > making the system less predictable and less robust so any help would > be appreciated. > > Thanks. > ------=_Part_22348_10358555.1207557630741 Content-Type: text/plain; name=tmp.txt Content-Transfer-Encoding: base64 X-Attachment-Id: f_feqsl72y0 Content-Disposition: attachment; filename=tmp.txt amFkbWluQGdib2ZmMDEtZ3MtZGV2LWJjb24xOn4kIGdyZXAgLWkgZXhjZXB0aW9uIC92YXIvbG9n L3RvbWNhdC9jb25zdW1lci5sb2cKMjAwOC0wNC0wNyAwMDoyNTo0OCw0MTQgIFdBUk4gICAgICAg ICAgICAgICAgICBvcmcuYXBhY2hlLmFjdGl2ZW1xLkFjdGl2ZU1RQ29ubmVjdGlvbi5vbkFzeW5j RXhjZXB0aW9uKEFjdGl2ZU1RQ29ubmVjdGlvbi5qYXZhOjE1MjkpICAtICBBc3luYyBleGNlcHRp b24gd2l0aCBubyBleGNlcHRpb24gbGlzdGVuZXI6IGphdmEubGFuZy5SdW50aW1lRXhjZXB0aW9u OiBqYXZhLmlvLklPRXhjZXB0aW9uOiBGYWlsZWQgdG8gYnJva2VyIG1lc3NhZ2U6IElEOmdib2Zm MDEtZ3MtZGV2LWJwcm8xLTM2MjA1LTEyMDczMjIyOTk3NTYtMDo3OjE6MToxNzQ5NTQgaW4gY29u dGFpbmVyOiBTUUwgRXhjZXB0aW9uOiBBIGxvY2sgY291bGQgbm90IGJlIG9idGFpbmVkIHdpdGhp 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