Return-Path: X-Original-To: apmail-hbase-user-archive@www.apache.org Delivered-To: apmail-hbase-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 DFFFC11342 for ; Fri, 19 Sep 2014 21:05:33 +0000 (UTC) Received: (qmail 61009 invoked by uid 500); 19 Sep 2014 21:05:29 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 60924 invoked by uid 500); 19 Sep 2014 21:05:29 -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 60614 invoked by uid 99); 19 Sep 2014 21:05:28 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 19 Sep 2014 21:05:28 +0000 X-ASF-Spam-Status: No, hits=1.5 required=5.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_LOW,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of saint.ack@gmail.com designates 209.85.215.42 as permitted sender) Received: from [209.85.215.42] (HELO mail-la0-f42.google.com) (209.85.215.42) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 19 Sep 2014 21:05:02 +0000 Received: by mail-la0-f42.google.com with SMTP id hz20so3957150lab.29 for ; Fri, 19 Sep 2014 14:05:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:content-type; bh=SSjhbRcYi50qSbaiyq3iVN9nlFN+3qhpkvAaP5bMmvw=; b=HFAZS4rC3QixmogZ95EoU8yU/P0btYwsk/bHIDy3FjIG0M8w7gkAWUUNuXjhmJ7LLA FP/wBdivHzpq8hEjyc3hJ95SKJ9VIKiwRhIaMX9Cb9Yy7/1DF+XImxwkHjvpC2PZiBS8 v+GcSzkyzz7ZfdFZkSTfTclQHgqsa2Bb8GApFRgHCQD8v/u0LUKmR2pNXy+s9TnoHuGd NNZ/JcKob4RY0r4Jfoybmc36ImJVgRjcP2qCVPiOywEuXv20ghxa5hgYGywuiobfcy33 WKQHtkcV6xcyeMl2B5ZUIRLbNArd5QJl/Oi8Gg64+snd6x7Fw2jkiArxYlfTL+FtqDj9 FaIw== MIME-Version: 1.0 X-Received: by 10.152.27.200 with SMTP id v8mr9246439lag.53.1411160701586; Fri, 19 Sep 2014 14:05:01 -0700 (PDT) Sender: saint.ack@gmail.com Received: by 10.152.148.170 with HTTP; Fri, 19 Sep 2014 14:05:01 -0700 (PDT) In-Reply-To: References: Date: Fri, 19 Sep 2014 14:05:01 -0700 X-Google-Sender-Auth: hm281ICGxi7Und2IAuYB9uGtIDQ Message-ID: Subject: Re: HBase establishes session with ZooKeeper and close the session immediately From: Stack To: Hbase-User Content-Type: multipart/alternative; boundary=089e0160a3be56d1a205037174b0 X-Virus-Checked: Checked by ClamAV on apache.org --089e0160a3be56d1a205037174b0 Content-Type: text/plain; charset=UTF-8 On Thu, Sep 18, 2014 at 1:50 AM, tobe wrote: > I have found that our RegionServers connect to the ZooKeeper frequently. > They seems to constantly establish the session, close it and reconnect the > ZooKeeper. Here is the log for both server and client sides. I have no idea > why this happens and how to deal with it? We're using HBase 0.94.11 and > ZooKeeper 3.4.4. > Is it on a period of about 5 minutes? Is it everytime we scan the meta table, we create a new zk session? St.Ack --089e0160a3be56d1a205037174b0--