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 B9E3818853 for ; Thu, 5 Nov 2015 15:58:16 +0000 (UTC) Received: (qmail 67297 invoked by uid 500); 5 Nov 2015 15:58:14 -0000 Delivered-To: apmail-hbase-user-archive@hbase.apache.org Received: (qmail 67229 invoked by uid 500); 5 Nov 2015 15:58:14 -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 67216 invoked by uid 99); 5 Nov 2015 15:58:14 -0000 Received: from Unknown (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Nov 2015 15:58:14 +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 B3224180A58 for ; Thu, 5 Nov 2015 15:58:13 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 2.999 X-Spam-Level: ** X-Spam-Status: No, score=2.999 tagged_above=-999 required=6.31 tests=[DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=3, RCVD_IN_MSPIKE_H2=-0.001] autolearn=disabled Authentication-Results: spamd3-us-west.apache.org (amavisd-new); dkim=pass (2048-bit key) header.d=spaggiari_org.20150623.gappssmtp.com Received: from mx1-eu-west.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id GCcx2mKrM_aU for ; Thu, 5 Nov 2015 15:58:12 +0000 (UTC) Received: from mail-qg0-f42.google.com (mail-qg0-f42.google.com [209.85.192.42]) by mx1-eu-west.apache.org (ASF Mail Server at mx1-eu-west.apache.org) with ESMTPS id 188572074F for ; Thu, 5 Nov 2015 15:58:11 +0000 (UTC) Received: by qgeo38 with SMTP id o38so70132487qge.0 for ; Thu, 05 Nov 2015 07:58:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=spaggiari_org.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=R2k+laXFwWUCWpXMF2AA+2G8sioFdKUAvGz2lpPxAxU=; b=MwUw7X/3oYqdJMfsFEctJ44YcbqphBuKfjDki7fm/6Mp5tiz1n0nW59MMxC/BsH5eO 3g+sLwlsR+VpmjScQqYRS+/pBlWldMi2irRtway3ew9c+6UIrwsZ8GqbPIs1r5fL9BCm 5fZxL7S0c4LBXjA/NvZScL7pa8d9vS0XRc52lW49cUpYetIoalR5U4gD9Q/NMPtjWzE7 VMAUOC/NDR2hn9hdiUwpFQ141n9JFVF+c9ri/zShiniOuVEA45OPvoPsWBLE/yICNmZD jgdxfvKoteC7+pSbPRfuYB4yWk1WavDg6CnftSxkce6q9O4oqxMi955/cGS1nArMqiC4 3p8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=R2k+laXFwWUCWpXMF2AA+2G8sioFdKUAvGz2lpPxAxU=; b=eUHzjyX4TDCXUDlPsFQ5YFZHKXMe68zVKqTLhEAtkoPqCVyDXIzD08lu9Px2UhB5lp OxChPc/WBZsCbLyD/eqP14p7cHbrej1Fe34VzuDTe5jznaGaEaf4XwYMz1FyelxiwAiP bitHxWsWz8jm5q3D30MwXistJqd1EdSVtqHoDOGS/nfE9fYvvQMtUbnAUTr4wZk4vJ4j dxdd7eDFgyuf+M1UGl6R6pEh+CnSKo3Aj5SSvERszyJHPdgKvmirqdoQflaLPup/vdNq dgEoLzsXor9VGLkviuzxTsks0tCt8mqfMKGJ1/dH00ez5G5oOpi194iFxnMfsyeu2fXN lwtA== X-Gm-Message-State: ALoCoQnH5V0PEOf8PY5ujCEdIXzVXV+ARjBKMRYQuHlzbytLdeUAIi1Xhc0ul3lueSIT3KawysX0 X-Received: by 10.140.135.17 with SMTP id 17mr8770757qhh.3.1446739090775; Thu, 05 Nov 2015 07:58:10 -0800 (PST) MIME-Version: 1.0 Received: by 10.140.104.85 with HTTP; Thu, 5 Nov 2015 07:57:51 -0800 (PST) In-Reply-To: References: From: Jean-Marc Spaggiari Date: Thu, 5 Nov 2015 10:57:51 -0500 Message-ID: Subject: Re: hbase timerange scan To: user Content-Type: multipart/alternative; boundary=001a1136ee4896d3fb0523cd31a1 --001a1136ee4896d3fb0523cd31a1 Content-Type: text/plain; charset=UTF-8 Hi Shushant, If my memory deserves me correctly, someone asked the same question about a year ago, and one of the commiters looked into the code to figure that there is no mechanism to skip some of the files even when timestamp is provided. It ended up being a full table scan. You might be able to find that using google and the mailing list. JMS 2015-11-04 23:07 GMT-05:00 Shushant Arora : > Does hbase timerange scan is full table scan without the start and stop > key? > Or is it take care of HFile meta data about min and max timerange n HFile . > And how it optimises this metadata after compaction of multiple files? > --001a1136ee4896d3fb0523cd31a1--