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 9BE3D1021D for ; Tue, 4 Feb 2014 08:58:17 +0000 (UTC) Received: (qmail 78939 invoked by uid 500); 4 Feb 2014 08:58:14 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 78876 invoked by uid 500); 4 Feb 2014 08:58:14 -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 78552 invoked by uid 99); 4 Feb 2014 08:58:12 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 04 Feb 2014 08:58:12 +0000 Date: Tue, 4 Feb 2014 08:58:11 +0000 (UTC) From: "ramkrishna.s.vasudevan (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-10447) Memstore flusher scans storefiles also when the scanner heap gets reset 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-10447?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] ramkrishna.s.vasudevan updated HBASE-10447: ------------------------------------------- Status: Patch Available (was: Open) > Memstore flusher scans storefiles also when the scanner heap gets reset > ----------------------------------------------------------------------- > > Key: HBASE-10447 > URL: https://issues.apache.org/jira/browse/HBASE-10447 > Project: HBase > Issue Type: Bug > Affects Versions: 0.98.0, 0.99.0 > Reporter: ramkrishna.s.vasudevan > Assignee: ramkrishna.s.vasudevan > Priority: Blocker > Fix For: 0.98.0, 0.99.0 > > Attachments: HBASE-10447_0.98.patch, HBASE-10447_trunk.patch, HBASE-10447_trunk_1.patch > > > See the mail thread > http://osdir.com/ml/general/2014-01/msg61294.html > In case of flush we create a memstore flusher which in turn creates a StoreScanner backed by a Single ton MemstoreScanner. > But this scanner also registers for any updates in the reader in the HStore. Is this needed? > If this happens then any update on the reader may nullify the current heap and the entire Scanner Stack is reset, but this time with the other scanners for all the files that satisfies the last top key. So the flush that happens on the memstore holds the storefile scanners also in the heap that was recreated but originally the intention was to create a scanner on the memstore alone. -- This message was sent by Atlassian JIRA (v6.1.5#6160)