Return-Path: Delivered-To: apmail-hbase-user-archive@www.apache.org Received: (qmail 92882 invoked from network); 12 Oct 2010 18:08:55 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 12 Oct 2010 18:08:55 -0000 Received: (qmail 78892 invoked by uid 500); 12 Oct 2010 18:08:54 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 78852 invoked by uid 500); 12 Oct 2010 18:08:53 -0000 Mailing-List: contact user-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@hbase.apache.org Delivered-To: mailing list user@hbase.apache.org Received: (qmail 78844 invoked by uid 99); 12 Oct 2010 18:08:53 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 12 Oct 2010 18:08:53 +0000 X-ASF-Spam-Status: No, hits=0.0 required=10.0 tests=FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of saint.ack@gmail.com designates 74.125.82.169 as permitted sender) Received: from [74.125.82.169] (HELO mail-wy0-f169.google.com) (74.125.82.169) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 12 Oct 2010 18:08:48 +0000 Received: by wyf28 with SMTP id 28so1681489wyf.14 for ; Tue, 12 Oct 2010 11:08:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type:content-transfer-encoding; bh=AmFYBuyEXSUueK/M9IVhPp29RnX1EC4Fqfd4Dfh7uoY=; b=SLnChQN1LPlwEdJXYBaPg/XUIDGSJhkOTRPWqbFU5Df3Wiajea7bsvbnx59X5vrDiP a3LZD1Y/n7a/8m5+x9h/qkaWoIK1k960KrBZIDXjQUlfvAfEFePJHrxFdbMuAzXZp0iM 8V0T+egTJiUrFB6Yqdkz7WdXKacTiyrB9o5gc= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type :content-transfer-encoding; b=b2LVgPpIQwqxWs/DcNVpgDi6GycpUFCHouMJnCTMI6qW8yB68UYGZKh/es2iPj0pJa Au93C9mswN1lDErZrmxVjgPK/ykIE4BUNU+wX9Qx8TMoI609kopRkbg3uLHrc9EY1/xF lfhj82YgFJ6HgHKBG/uNoG+1LLMY+/couaWUY= MIME-Version: 1.0 Received: by 10.216.3.19 with SMTP id 19mr149811weg.108.1286906906897; Tue, 12 Oct 2010 11:08:26 -0700 (PDT) Sender: saint.ack@gmail.com Received: by 10.216.166.204 with HTTP; Tue, 12 Oct 2010 11:08:26 -0700 (PDT) In-Reply-To: <1286881581.7047.21.camel@linux-elo4.site> References: <1286881581.7047.21.camel@linux-elo4.site> Date: Tue, 12 Oct 2010 14:08:26 -0400 X-Google-Sender-Auth: XZahaYqWiLVVYS6TZw1a-DPPKHQ Message-ID: Subject: Re: HBase client shutdown hook hangs From: Stack To: user@hbase.apache.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On Tue, Oct 12, 2010 at 7:06 AM, Henning Blohm w= rote: > =A0when running an application that interfaces with an HBase installation > (v. 0.20.6) I noticed that the Hbase shutdown hooks hangs. This does not > happen every time, but frequently. This is the call stack when it hangs: > That looks like the zk client in the hbase client is hanging, waiting on some notification that is not coming. Was zk ensemble up at the time? Any other earlier exceptions earlier in the logs? There's an issue to remove shutdown hook in TRUNK. That'd fix this I suppose (smile)? St.Ack