From dev-return-54291-archive-asf-public=cust-asf.ponee.io@phoenix.apache.org Tue Oct 16 14:41:03 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 4F7A1180649 for ; Tue, 16 Oct 2018 14:41:03 +0200 (CEST) Received: (qmail 57771 invoked by uid 500); 16 Oct 2018 12:41:02 -0000 Mailing-List: contact dev-help@phoenix.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@phoenix.apache.org Delivered-To: mailing list dev@phoenix.apache.org Received: (qmail 57760 invoked by uid 99); 16 Oct 2018 12:41:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 16 Oct 2018 12:41:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id A32311A2CE3 for ; Tue, 16 Oct 2018 12:41:01 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -109.501 X-Spam-Level: X-Spam-Status: No, score=-109.501 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, KAM_ASCII_DIVIDERS=0.8, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id kp_Rw2LZyyMp for ; Tue, 16 Oct 2018 12:41:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id D36105F387 for ; Tue, 16 Oct 2018 12:41:00 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 7B7C4E0E87 for ; Tue, 16 Oct 2018 12:41:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 2A70F24DE8 for ; Tue, 16 Oct 2018 12:41:00 +0000 (UTC) Date: Tue, 16 Oct 2018 12:41:00 +0000 (UTC) From: "Jaanai (JIRA)" To: dev@phoenix.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (PHOENIX-4974) Gets all regions uses get requests is extremely slows for big table MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/PHOENIX-4974?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jaanai updated PHOENIX-4974: ---------------------------- Attachment: PHOENIX-4974-master.patch > Gets all regions uses get requests is extremely slows for big table > -------------------------------------------------------------------- > > Key: PHOENIX-4974 > URL: https://issues.apache.org/jira/browse/PHOENIX-4974 > Project: Phoenix > Issue Type: Improvement > Affects Versions: 4.14.0, 5.0.0 > Reporter: Jaanai > Assignee: Jaanai > Priority: Major > Attachments: PHOENIX-4974-master.patch, Screen Shot 2018-10-16 at 19.53.48.png > > > When executes the first query after started the client(SQLline or initializing JDBC client ), needs to load region locations to the client cache. Now the following is key implement : > {code:java} > List locations = Lists.newArrayList(); > byte[] currentKey = HConstants.EMPTY_START_ROW; > do { > HRegionLocation regionLocation = connection.getRegionLocation( > TableName.valueOf(tableName), currentKey, reload); > locations.add(regionLocation); > currentKey = regionLocation.getRegionInfo().getEndKey(); > } while (!Bytes.equals(currentKey, HConstants.EMPTY_END_ROW)); > {code} > For some big tables which have more than ten thousand regions, this procedure is extremely slow. > Runs a look points query on the table that has 10000 regions after starting the client, it needs 25+ seconds. -- This message was sent by Atlassian JIRA (v7.6.3#76005)