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 5D8ED187E5 for ; Wed, 21 Oct 2015 02:44:28 +0000 (UTC) Received: (qmail 8501 invoked by uid 500); 21 Oct 2015 02:44:28 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 8438 invoked by uid 500); 21 Oct 2015 02:44:28 -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 8344 invoked by uid 99); 21 Oct 2015 02:44:28 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 21 Oct 2015 02:44:28 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id DC8002C1F5E for ; Wed, 21 Oct 2015 02:44:27 +0000 (UTC) Date: Wed, 21 Oct 2015 02:44:27 +0000 (UTC) From: "Heng Chen (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-14643) Avoid Splits from once again opening a closed reader for fetching the first and last key 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-14643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14966149#comment-14966149 ] Heng Chen commented on HBASE-14643: ----------------------------------- Thanks [~eclark] for your suggestion, do i need to upload a new patch to fix this minor nit? :) > Avoid Splits from once again opening a closed reader for fetching the first and last key > ---------------------------------------------------------------------------------------- > > Key: HBASE-14643 > URL: https://issues.apache.org/jira/browse/HBASE-14643 > Project: HBase > Issue Type: Improvement > Components: regionserver > Affects Versions: 2.0.0 > Reporter: ramkrishna.s.vasudevan > Assignee: Heng Chen > Fix For: 2.0.0, 1.2.0, 1.3.0 > > Attachments: HBASE-14643.patch, HBASE-14643_v1.patch, HBASE-14643_v2.patch, HBASE-14643_v3.patch, HBASE-14643_v4.patch, HBASE-14643_v5.patch > > > Currently split flow is such that we close the parent region and all its store file readers are also closed. After that inorder to split the reference files we need the first and last keys for which once again open the readers on those store files. This could be costlier operation considering the fact that it has to contact the HDFS for this close and open operation. This JIRA is to see if we can improve this. -- This message was sent by Atlassian JIRA (v6.3.4#6332)