From user-return-27320-apmail-cassandra-user-archive=cassandra.apache.org@cassandra.apache.org Sun Jul 1 18:39:53 2012 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 959CED210 for ; Sun, 1 Jul 2012 18:39:53 +0000 (UTC) Received: (qmail 27645 invoked by uid 500); 1 Jul 2012 18:39:51 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 27624 invoked by uid 500); 1 Jul 2012 18:39:51 -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 27616 invoked by uid 99); 1 Jul 2012 18:39:51 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 01 Jul 2012 18:39:51 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=FSL_RCVD_USER,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [208.113.200.5] (HELO homiemail-a54.g.dreamhost.com) (208.113.200.5) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 01 Jul 2012 18:39:42 +0000 Received: from homiemail-a54.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a54.g.dreamhost.com (Postfix) with ESMTP id 31F7C3A4061 for ; Sun, 1 Jul 2012 11:39:21 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; q=dns; s=thelastpickle.com; b=cRIo6s8Fwb 4pNg0rdZB6Uaba5SQwkzWKpJo0641HEaS9oEm6yoad8AwFyR0LiIhw2Fb/3KmMf9 GQjLd4bdn/zHa6uzZXSS1+W1qU0YXgrdCEBwde9Xo5DA4LopGTSZNdEp15JkOOkU EkP2q0YX7AxirFwNkjKndClRrOKfIBFh4= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=thelastpickle.com; h=from :mime-version:content-type:subject:date:in-reply-to:to :references:message-id; s=thelastpickle.com; bh=SNo9UXh76zeaYMD2 BkTaPw7Dpik=; b=F3Snr/gbXWh5TVLrWEgqMJPnhyia1G58w3izMxAHAU3u1oj9 D7SV6QPVqWdx4F1NsUvw4r0ZvGQd+c/DRtgjHvLJ+6rNc/tVp7syzo/kTSULqMAi XxfVfEADTNzHJVzsLg8bu0Cn0Ig3+IYOLvRIXB45H4NwxFOutFvTyc1rwD8= Received: from [172.16.1.4] (unknown [203.86.207.101]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: aaron@thelastpickle.com) by homiemail-a54.g.dreamhost.com (Postfix) with ESMTPSA id 9D85F3A4058 for ; Sun, 1 Jul 2012 11:39:20 -0700 (PDT) From: aaron morton Mime-Version: 1.0 (Apple Message framework v1278) Content-Type: multipart/alternative; boundary="Apple-Mail=_4E1203A0-14FE-4A68-832B-305D517597CD" Subject: Re: hector timeouts Date: Mon, 2 Jul 2012 06:39:19 +1200 In-Reply-To: <4FECAA5C.1010605@syncopated.net> To: user@cassandra.apache.org References: <4FEBFB05.6000206@syncopated.net> <4FECAA5C.1010605@syncopated.net> Message-Id: X-Mailer: Apple Mail (2.1278) --Apple-Mail=_4E1203A0-14FE-4A68-832B-305D517597CD Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=iso-8859-1 Using Cassandra as a queue is generally thought of as a bas idea, owing = to the high delete workload. Levelled compaction handles it better but = it is still no the best approach.=20 Depending on your needs consider running = http://incubator.apache.org/kafka/=20 > could you share some details on this? we're using hector and we see = random timeout warns in the logs and not sure how to address them. First determine if they are server side or client side timeouts. Then = determine what the query was.=20 Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 29/06/2012, at 7:02 AM, Deno Vichas wrote: > On 6/28/2012 9:37 AM, David Leimbach wrote: >>=20 >> That coupled with Hector timeout issues became a real problem for us. >=20 > could you share some details on this? we're using hector and we see = random timeout warns in the logs and not sure how to address them. >=20 >=20 > thanks, > deno --Apple-Mail=_4E1203A0-14FE-4A68-832B-305D517597CD Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=iso-8859-1 Using = Cassandra as a queue is generally thought of as a bas idea, owing to the = high delete workload. Levelled compaction handles it better but it is = still no the best approach. 

Depending on your = needs consider running http://incubator.apache.org/ka= fka/ 

could you share some details on this?  we're = using hector and we see random timeout warns in the logs and not sure = how to address them.
First determine if they = are server side or client side timeouts. Then determine what the query = was. 

Cheers

http://www.thelastpickle.com

On 29/06/2012, at 7:02 AM, Deno Vichas wrote:

On = 6/28/2012 9:37 AM, David Leimbach wrote:

That coupled = with Hector timeout issues became a real problem for = us.

could you share some details on this? =  we're using hector and we see random timeout warns in the logs and = not sure how to address = them.


thanks,
deno

= --Apple-Mail=_4E1203A0-14FE-4A68-832B-305D517597CD--