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 D26AF17F2A for ; Wed, 18 Mar 2015 10:08:40 +0000 (UTC) Received: (qmail 85642 invoked by uid 500); 18 Mar 2015 10:08:40 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 85603 invoked by uid 500); 18 Mar 2015 10:08:40 -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 85591 invoked by uid 99); 18 Mar 2015 10:08:40 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 18 Mar 2015 10:08:40 +0000 Date: Wed, 18 Mar 2015 10:08:40 +0000 (UTC) From: "Anoop Sam John (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-11425) Cell/DBB end-to-end on the read-path 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-11425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Anoop Sam John updated HBASE-11425: ----------------------------------- Attachment: HBASE-11425-E2E-NotComplete.patch Attaching an E2E patch for reference. Still some more cleanups we are doing. Also avoiding some code duplication still in patch. > Cell/DBB end-to-end on the read-path > ------------------------------------ > > Key: HBASE-11425 > URL: https://issues.apache.org/jira/browse/HBASE-11425 > Project: HBase > Issue Type: Umbrella > Components: regionserver, Scanners > Affects Versions: 0.99.0 > Reporter: Anoop Sam John > Assignee: Anoop Sam John > Attachments: HBASE-11425-E2E-NotComplete.patch, Offheap reads in HBase using BBs_V2.pdf, Offheap reads in HBase using BBs_final.pdf > > > Umbrella jira to make sure we can have blocks cached in offheap backed cache. In the entire read path, we can refer to this offheap buffer and avoid onheap copying. > The high level items I can identify as of now are > 1. Avoid the array() call on BB in read path.. (This is there in many classes. We can handle class by class) > 2. Support Buffer based getter APIs in cell. In read path we will create a new Cell with backed by BB. Will need in CellComparator, Filter (like SCVF), CPs etc. > 3. Avoid KeyValue.ensureKeyValue() calls in read path - This make byte copy. > 4. Remove all CP hooks (which are already deprecated) which deal with KVs. (In read path) > Will add subtasks under this. -- This message was sent by Atlassian JIRA (v6.3.4#6332)