From user-return-55611-archive-asf-public=cust-asf.ponee.io@hbase.apache.org Mon Nov 26 10:33:18 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 06043180647 for ; Mon, 26 Nov 2018 10:33:17 +0100 (CET) Received: (qmail 39870 invoked by uid 500); 26 Nov 2018 09:33:16 -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 39858 invoked by uid 99); 26 Nov 2018 09:33:15 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd4-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 26 Nov 2018 09:33:15 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd4-us-west.apache.org (ASF Mail Server at spamd4-us-west.apache.org) with ESMTP id 8DF54C21D4 for ; Mon, 26 Nov 2018 09:33:15 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 2.152 X-Spam-Level: ** X-Spam-Status: No, score=2.152 tagged_above=-999 required=6.31 tests=[DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FROM_EXCESS_BASE64=0.105, HTML_MESSAGE=2, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001] autolearn=disabled Authentication-Results: spamd4-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.com Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id d1F4CNT2A7z7 for ; Mon, 26 Nov 2018 09:33:13 +0000 (UTC) Received: from mail-wr1-f50.google.com (mail-wr1-f50.google.com [209.85.221.50]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTPS id 53D0061097 for ; Mon, 26 Nov 2018 09:33:13 +0000 (UTC) Received: by mail-wr1-f50.google.com with SMTP id c14so12449270wrr.0 for ; Mon, 26 Nov 2018 01:33:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=w8bUuFPo863CXB4ZdADYRNhn7tF0nxBZDN/p8cnP6Aw=; b=YkzoDtH+8bjyCnCWh0NYYkVWhHwluQ45+w+GurVozClMhjrTinrN2Fc2kf08ynY8f4 X/RvZLtRtJFOblczf1tWgOIyeOZitM2sKF0TTNEjmHldqzHcvKRudGCnSNWQisIepJLJ 8ea7HzNlIWP9e4Fqe6mN1wBXxjfdVnrp3upoGmxhBkAumlgN4Od5/ZKryVCfQkZsmzfa 7xZ0Qwm1KPx0t0B6owlkM5pQI6wP7eAmsEwCfyG/9rr4ir7m6qDkWWLyMmrFnQDPIUAC EgN+pBETAPgQCaP7V9QaMHqGgRuLv0qsT7BlHPQg4RXVO8rlGA1FssaLuYYhNs0ioU/M tAXQ== 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=w8bUuFPo863CXB4ZdADYRNhn7tF0nxBZDN/p8cnP6Aw=; b=SxRIMYSq9KVb5n4Vj4UagRWsTqlhgV/8EnE/fNKf3alvoRVKQchnm3p+jsSHr4qQ0u qroLopeJh8zq4CevZzh32TzdxN4vVgX8PIytuZ0Ak/ChOZPDC2hFDCWJf3TrK/LGdQ1R zvQgclLnZWDDsuiFNAmRSBMtPVecOv3NR0MqIZkGWc8EEIM8G3FPF380GVuy251AheeA avvXCRWWDVtJPoLnqnozc7Npr0OOECAZ8Ji2bTQAZ8II4LwB/o4EfcW4bH/vh9W3XNlb vyjSQzABtz7Q34I7uigIo6Qu39xrLOxF38JT64aqi8kW5WEsHgwONny8SF3C1Kd1JY3c PHPA== X-Gm-Message-State: AA+aEWaxLFTf+W4b7ZVVwHVTSGgi4bqlH0pY4N8nuvMzXR/p6y0AsR2w x1OYa761jf3KTAl48XjCEFji+Mv1nLIwKkoZHpWVs86Y X-Google-Smtp-Source: AFSGD/Ua7LgooH0X4QxFV15dLxk1hktadYZdIWI5eRCaQn4OkwwZue7c4we6M8Ba0TN8keHnKQyggXK88ASPPVelpiI= X-Received: by 2002:adf:eec9:: with SMTP id a9mr22190343wrp.242.1543224791897; Mon, 26 Nov 2018 01:33:11 -0800 (PST) MIME-Version: 1.0 References: <5bfbbb5d.1c69fb81.28d74.7497@mx.google.com> In-Reply-To: <5bfbbb5d.1c69fb81.28d74.7497@mx.google.com> From: =?UTF-8?B?5byg6ZOOKER1byBaaGFuZyk=?= Date: Mon, 26 Nov 2018 17:33:00 +0800 Message-ID: Subject: Re: What if a lot of clients to hbase To: hbase-user Content-Type: multipart/alternative; boundary="000000000000879b37057b8e0536" --000000000000879b37057b8e0536 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable It depends on a lot of things. First if you have 100 machines for hbase and the 100 clients just go to different machines than everything is fine. If you only have 1 machine, or your requests are all for the same region, then it depends on the timeout config of your clients. And usually 100 clients will not make HBase begin to refuse requests, but if your rpc timeout is small and you keep retrying, the hbase may start to refuse request due to rpc queue full. pingsutw =E4=BA=8E2018=E5=B9=B411=E6=9C=8826=E6=97=A5= =E5=91=A8=E4=B8=80 =E4=B8=8B=E5=8D=885:22=E5=86=99=E9=81=93=EF=BC=9A > Hi, > > If 100 clients write to hbase,every client would wait until write > successfully,or would got refuse if waiting too long times. > > Thanks, > Kevin > =E5=BE=9E Windows 10 =E7=9A=84=E9=83=B5=E4=BB=B6=E5=82=B3=E9=80=81 > > --000000000000879b37057b8e0536--