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 A5DCE1031B for ; Tue, 29 Apr 2014 16:26:44 +0000 (UTC) Received: (qmail 57778 invoked by uid 500); 29 Apr 2014 16:26:33 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 57674 invoked by uid 500); 29 Apr 2014 16:26:30 -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 57476 invoked by uid 99); 29 Apr 2014 16:26:25 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 29 Apr 2014 16:26:25 +0000 Date: Tue, 29 Apr 2014 16:26:25 +0000 (UTC) From: "ramkrishna.s.vasudevan (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HBASE-10885) Support visibility expressions on Deletes 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-10885?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] ramkrishna.s.vasudevan updated HBASE-10885: ------------------------------------------- Status: Patch Available (was: Open) > Support visibility expressions on Deletes > ----------------------------------------- > > Key: HBASE-10885 > URL: https://issues.apache.org/jira/browse/HBASE-10885 > Project: HBase > Issue Type: Improvement > Affects Versions: 0.98.1 > Reporter: Andrew Purtell > Assignee: ramkrishna.s.vasudevan > Priority: Critical > Fix For: 0.99.0, 0.98.2 > > Attachments: HBASE-10885_1.patch, HBASE-10885_2.patch > > > Accumulo can specify visibility expressions for delete markers. During compaction the cells covered by the tombstone are determined in part by matching the visibility expression. This is useful for the use case of data set coalescing, where entries from multiple data sets carrying different labels are combined into one common large table. Later, a subset of entries can be conveniently removed using visibility expressions. > Currently doing the same in HBase would only be possible with a custom coprocessor. Otherwise, a Delete will affect all cells covered by the tombstone regardless of any visibility expression scoping. This is correct behavior in that no data spill is possible, but certainly could be surprising, and is only meant to be transitional. We decided not to support visibility expressions on Deletes to control the complexity of the initial implementation. -- This message was sent by Atlassian JIRA (v6.2#6252)