From java-dev-return-47730-apmail-lucene-java-dev-archive=lucene.apache.org@lucene.apache.org Sun Mar 14 13:58:32 2010 Return-Path: Delivered-To: apmail-lucene-java-dev-archive@www.apache.org Received: (qmail 21631 invoked from network); 14 Mar 2010 13:58:32 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 14 Mar 2010 13:58:32 -0000 Received: (qmail 67182 invoked by uid 500); 14 Mar 2010 13:57:48 -0000 Delivered-To: apmail-lucene-java-dev-archive@lucene.apache.org Received: (qmail 67137 invoked by uid 500); 14 Mar 2010 13:57:48 -0000 Mailing-List: contact java-dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: java-dev@lucene.apache.org Delivered-To: mailing list java-dev@lucene.apache.org Received: (qmail 67130 invoked by uid 99); 14 Mar 2010 13:57:48 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 14 Mar 2010 13:57:48 +0000 X-ASF-Spam-Status: No, hits=-1005.9 required=10.0 tests=ALL_TRUSTED,AWL X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 14 Mar 2010 13:57:47 +0000 Received: from brutus.apache.org (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id 41C0B234C1F0 for ; Sun, 14 Mar 2010 13:57:27 +0000 (UTC) Message-ID: <859225917.255201268575047268.JavaMail.jira@brutus.apache.org> Date: Sun, 14 Mar 2010 13:57:27 +0000 (UTC) From: "Toke Eskildsen (JIRA)" To: java-dev@lucene.apache.org Subject: [jira] Commented: (LUCENE-1990) Add unsigned packed int impls in oal.util In-Reply-To: <486796805.1255870411278.JavaMail.jira@brutus> 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/LUCENE-1990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12845082#action_12845082 ] Toke Eskildsen commented on LUCENE-1990: ---------------------------------------- Thanks for rounding off, Michael. It's been a pleasure. > Add unsigned packed int impls in oal.util > ----------------------------------------- > > Key: LUCENE-1990 > URL: https://issues.apache.org/jira/browse/LUCENE-1990 > Project: Lucene - Java > Issue Type: Improvement > Components: Index > Affects Versions: Flex Branch > Reporter: Michael McCandless > Priority: Minor > Fix For: Flex Branch > > Attachments: generated_performance-te20100226.txt, LUCENE-1990-te20100122.patch, LUCENE-1990-te20100210.patch, LUCENE-1990-te20100212.patch, LUCENE-1990-te20100223.patch, LUCENE-1990-te20100226.patch, LUCENE-1990-te20100226b.patch, LUCENE-1990-te20100226c.patch, LUCENE-1990-te20100301.patch, LUCENE-1990.patch, LUCENE-1990.patch, LUCENE-1990_PerformanceMeasurements20100104.zip, perf-mkm-20100227.txt, performance-20100301.txt, performance-te20100226.txt > > > There are various places in Lucene that could take advantage of an > efficient packed unsigned int/long impl. EG the terms dict index in > the standard codec in LUCENE-1458 could subsantially reduce it's RAM > usage. FieldCache.StringIndex could as well. And I think "load into > RAM" codecs like the one in TestExternalCodecs could use this too. > I'm picturing something very basic like: > {code} > interface PackedUnsignedLongs { > long get(long index); > void set(long index, long value); > } > {code} > Plus maybe an iterator for getting and maybe also for setting. If it > helps, most of the usages of this inside Lucene will be "write once" > so eg the set could make that an assumption/requirement. > And a factory somewhere: > {code} > PackedUnsignedLongs create(int count, long maxValue); > {code} > I think we should simply autogen the code (we can start from the > autogen code in LUCENE-1410), or, if there is an good existing impl > that has a compatible license that'd be great. > I don't have time near-term to do this... so if anyone has the itch, > please jump! -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: java-dev-unsubscribe@lucene.apache.org For additional commands, e-mail: java-dev-help@lucene.apache.org