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 BF16819599 for ; Tue, 29 Mar 2016 18:31:26 +0000 (UTC) Received: (qmail 42522 invoked by uid 500); 29 Mar 2016 18:31:26 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 42446 invoked by uid 500); 29 Mar 2016 18:31:26 -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 42397 invoked by uid 99); 29 Mar 2016 18:31:26 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 29 Mar 2016 18:31:26 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 14E282C1F64 for ; Tue, 29 Mar 2016 18:31:26 +0000 (UTC) Date: Tue, 29 Mar 2016 18:31:26 +0000 (UTC) From: "Vladimir Rodionov (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-15543) HFileScannerImpl.getCell() allocates cell object on every call 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-15543?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15216578#comment-15216578 ] Vladimir Rodionov commented on HBASE-15543: ------------------------------------------- {quote} The compaction scanner also has caching enabled. {quote} Why? Must be off. {quote} Is the reported 28% creation of new Cell or new Cell reference when the Cell is being made against a backing BB that is offheap from BucketCache? {quote} On heap. Both byte array and object are allocated. > HFileScannerImpl.getCell() allocates cell object on every call > -------------------------------------------------------------- > > Key: HBASE-15543 > URL: https://issues.apache.org/jira/browse/HBASE-15543 > Project: HBase > Issue Type: Sub-task > Reporter: Vladimir Rodionov > Assignee: Vladimir Rodionov > > This accounts for 28% of memory allocation in compaction thread. -- This message was sent by Atlassian JIRA (v6.3.4#6332)