Return-Path: X-Original-To: apmail-hbase-issues-archive@www.apache.org Delivered-To: apmail-hbase-issues-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id CD719C7E6 for ; Tue, 30 Dec 2014 11:31:13 +0000 (UTC) Received: (qmail 72880 invoked by uid 500); 30 Dec 2014 11:31:14 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 72839 invoked by uid 500); 30 Dec 2014 11:31:14 -0000 Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@hbase.apache.org Received: (qmail 72827 invoked by uid 99); 30 Dec 2014 11:31:14 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 30 Dec 2014 11:31:14 +0000 Date: Tue, 30 Dec 2014 11:31:14 +0000 (UTC) From: "Jurriaan Mous (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-12761) On region jump ClientScanners should get next row start key instead of a skip. 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/HBASE-12761?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jurriaan Mous updated HBASE-12761: ---------------------------------- Attachment: (was: HBASE-12761-v2.patch) > On region jump ClientScanners should get next row start key instead of a skip. > ------------------------------------------------------------------------------ > > Key: HBASE-12761 > URL: https://issues.apache.org/jira/browse/HBASE-12761 > Project: HBase > Issue Type: Improvement > Reporter: Jurriaan Mous > Assignee: Jurriaan Mous > Attachments: HBASE-12761-v1.patch, HBASE-12761-v2.patch, HBASE-12761.patch > > > While working on async scanner I had some trouble with the extra RPC calls that happen to let the Scanner advance 1 row so it skips the last already known row. > This RPC call can be avoided by letting the start key be the last row with an appended 0. This saves quite some logic from the scanners and improves performance by saving extra RPC calls. -- This message was sent by Atlassian JIRA (v6.3.4#6332)