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 4171F189B5 for ; Tue, 29 Sep 2015 07:40:05 +0000 (UTC) Received: (qmail 26493 invoked by uid 500); 29 Sep 2015 07:40:05 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 26442 invoked by uid 500); 29 Sep 2015 07:40:05 -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 26429 invoked by uid 99); 29 Sep 2015 07:40:04 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 29 Sep 2015 07:40:04 +0000 Date: Tue, 29 Sep 2015 07:40:04 +0000 (UTC) From: "Anoop Sam John (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-13819) Make RPC layer CellBlock buffer a DirectByteBuffer 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-13819?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Anoop Sam John updated HBASE-13819: ----------------------------------- Fix Version/s: 1.3.0 > Make RPC layer CellBlock buffer a DirectByteBuffer > -------------------------------------------------- > > Key: HBASE-13819 > URL: https://issues.apache.org/jira/browse/HBASE-13819 > Project: HBase > Issue Type: Sub-task > Components: Scanners > Reporter: Anoop Sam John > Assignee: Anoop Sam John > Fix For: 2.0.0, 1.3.0 > > Attachments: HBASE-13819.patch > > > In RPC layer, when we make a cellBlock to put as RPC payload, we will make an on heap byte buffer (via BoundedByteBufferPool). The pool will keep upto certain number of buffers. This jira aims at testing possibility for making this buffers off heap ones. (DBB) The advantages > 1. Unsafe based writes to off heap is faster than that to on heap. Now we are not using unsafe based writes at all. Even if we add, DBB will be better > 2. When Cells are backed by off heap (HBASE-11425) off heap to off heap writes will be better > 3. When checked the code in SocketChannel impl, if we pass a HeapByteBuffer to the socket channel, it will create a temp DBB and copy data to there and only DBBs will be moved to Sockets. If we make DBB 1st hand itself, we can avoid this one more level of copying. > Will do different perf testing with changed and report back. -- This message was sent by Atlassian JIRA (v6.3.4#6332)