From dev-return-47844-archive-asf-public=cust-asf.ponee.io@couchdb.apache.org Tue Apr 3 14:26:04 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 0F94718064D for ; Tue, 3 Apr 2018 14:26:03 +0200 (CEST) Received: (qmail 97198 invoked by uid 500); 3 Apr 2018 12:25:58 -0000 Mailing-List: contact dev-help@couchdb.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@couchdb.apache.org Delivered-To: mailing list dev@couchdb.apache.org Received: (qmail 97187 invoked by uid 99); 3 Apr 2018 12:25:58 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 03 Apr 2018 12:25:58 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id 802EA180454 for ; Tue, 3 Apr 2018 12:25:57 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: 2.972 X-Spam-Level: ** X-Spam-Status: No, score=2.972 tagged_above=-999 required=6.31 tests=[HTML_MESSAGE=2, RCVD_IN_DNSWL_NONE=-0.0001, SPF_SOFTFAIL=0.972] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id VbBMxrKKXsuQ for ; Tue, 3 Apr 2018 12:25:56 +0000 (UTC) Received: from monoceres.uberspace.de (monoceres.uberspace.de [95.143.172.184]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTPS id 871A15F19C for ; Tue, 3 Apr 2018 12:25:55 +0000 (UTC) Received: (qmail 9542 invoked from network); 3 Apr 2018 12:25:49 -0000 Received: from localhost (HELO ?172.23.3.40?) (127.0.0.1) by monoceres.uberspace.de with SMTP; 3 Apr 2018 12:25:49 -0000 From: Jan Lehnardt Content-Type: multipart/alternative; boundary="Apple-Mail=_266B3256-F6B3-406E-AC4A-6AAD9025C572" Mime-Version: 1.0 (Mac OS X Mail 10.3 \(3273\)) Subject: Re: Proposal: removing view changes code from mrview Date: Tue, 3 Apr 2018 14:25:46 +0200 References: <2EC93D70-6342-423E-A20C-44177EDDDD5D@eiri.ca> To: dev@couchdb.apache.org In-Reply-To: <2EC93D70-6342-423E-A20C-44177EDDDD5D@eiri.ca> Message-Id: X-Mailer: Apple Mail (2.3273) --Apple-Mail=_266B3256-F6B3-406E-AC4A-6AAD9025C572 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii +1 > On 3. Apr 2018, at 14:15, Eiri wrote: >=20 > Hi all, >=20 > It is my understanding that a current implementation of view changes = in mrview is conceptually broken. I heard from Robert Newson that he and = Benjamin Bastian found that some time ago doing testing with deletion = and recreation of docs emitting same keys in the views. >=20 > I propose to remove view changes code from mrview and its mention from = documentation, as it seem that people keep trying to use those for = filtered replication or getting a false impression that it's a simple = fix in fabric. Not to mention that the current implementation quite = complicates mrviews code and takes space in view files with building = unneeded seq and kseq btrees. >=20 > We can re-implement this feature later in more robust way as there are = clearly a demand for it. Please share your opinion. >=20 >=20 > Regards, > Eric --=20 Professional Support for Apache CouchDB: https://neighbourhood.ie/couchdb-support/ --Apple-Mail=_266B3256-F6B3-406E-AC4A-6AAD9025C572--