From user-return-11634-archive-asf-public=cust-asf.ponee.io@zookeeper.apache.org Thu Aug 23 12:36:39 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 29EBD18061A for ; Thu, 23 Aug 2018 12:36:39 +0200 (CEST) Received: (qmail 6969 invoked by uid 500); 23 Aug 2018 10:36:33 -0000 Mailing-List: contact user-help@zookeeper.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@zookeeper.apache.org Delivered-To: mailing list user@zookeeper.apache.org Received: (qmail 6951 invoked by uid 99); 23 Aug 2018 10:36:32 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 23 Aug 2018 10:36:32 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id DE7071810EF for ; Thu, 23 Aug 2018 10:36:31 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 1.879 X-Spam-Level: * X-Spam-Status: No, score=1.879 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_MESSAGE=2, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001] autolearn=disabled Authentication-Results: spamd3-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=cloudera.com Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id Lv0zVlmb4xEb for ; Thu, 23 Aug 2018 10:36:31 +0000 (UTC) Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTPS id A5CDC5F1E2 for ; Thu, 23 Aug 2018 10:36:30 +0000 (UTC) Received: by mail-pf1-f181.google.com with SMTP id j26-v6so2490790pfi.10 for ; Thu, 23 Aug 2018 03:36:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=5VexXhIWbO0VrrbKg09/x6SiHi9gfJKnYV6qsun17gM=; b=ZpA11vW9S0ug5iuGGPBtIDp9SFC6LHodtcr1kQ6T2GIVcEpot4qQSH64Xk2V2iMJCR XjYFhJAZNTVXolx/a8G46QZFI1zOUORydCyVLuxa7/gVThNpKOpd1OEyq/LfQwyfF0HR iIPk3Sm+FJ514YHELA9W04t7KAsI4/tzUIrst810w7k1q7zHK8TZUBHyGbJDIYhUAhAy lxaoGqeQzgKh3tLVo21RHzsfZYhDCxYua/gU+TWp1oNqXThxU/rr0zEbe9kawWhPv1jD hN0C2zM+pikHEtIhaW1tny3RphyiQiS6NZCATmw9tIh+Wr8oRg6eXB5GkehDU+gFeTj0 y/7Q== X-Gm-Message-State: APzg51DLpL0UHge1syq8OueZKCkfHRwJT5i/Au3dtnhdAv3+E5tCEZE4 /ZsNF2OqsBm0vz6cr4sNClmWQNa17PumDomeZ96sJYry X-Google-Smtp-Source: ANB0VdbzsP+8nvKEzNx6kuAzo4qklrl28Gn2GTF+j8HpzjbfDBuxW9XEqcs33XSNzW1bdDEj65r7FdK/5qtx+b82tO0= X-Received: by 2002:a63:5a05:: with SMTP id o5-v6mr27800pgb.224.1535020589565; Thu, 23 Aug 2018 03:36:29 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Norbert Kalmar Date: Thu, 23 Aug 2018 12:36:18 +0200 Message-ID: Subject: Re: Port 3888 closed on Leader To: user@zookeeper.apache.org Content-Type: multipart/alternative; boundary="000000000000f6f299057417d4ed" --000000000000f6f299057417d4ed Content-Type: text/plain; charset="UTF-8" Hi, I don't fully understand the events here, but as I see: - Leader election port should not just disappear, maybe some config issue? - If a follower is unable to join back in the quorum, but there is still n/2 + 1 nodes functioning (in case of 3 nodes - 2 functioning nodes), the quorum will work without a problem, and leader will not come out of the cluster. Regards, Norbert On Wed, Aug 15, 2018 at 3:46 PM harish lohar wrote: > Hi, > > In a deployment of 3 Node Zk Cluster we have seen that sometime port 3888 > is absent after the cluster is formed , this causes Follower node to not > able to connect to leader if they restart. > > Don't leader itself should come out of clustering if this happens ?? > > Thanks > Harish > --000000000000f6f299057417d4ed--