Return-Path: X-Original-To: apmail-flink-dev-archive@www.apache.org Delivered-To: apmail-flink-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 38E0E19860 for ; Tue, 15 Mar 2016 10:01:34 +0000 (UTC) Received: (qmail 39041 invoked by uid 500); 15 Mar 2016 10:01:33 -0000 Delivered-To: apmail-flink-dev-archive@flink.apache.org Received: (qmail 38765 invoked by uid 500); 15 Mar 2016 10:01:33 -0000 Mailing-List: contact dev-help@flink.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@flink.apache.org Delivered-To: mailing list dev@flink.apache.org Received: (qmail 38644 invoked by uid 99); 15 Mar 2016 10:01:33 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 15 Mar 2016 10:01:33 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 85C602C1F58 for ; Tue, 15 Mar 2016 10:01:33 +0000 (UTC) Date: Tue, 15 Mar 2016 10:01:33 +0000 (UTC) From: "Aljoscha Krettek (JIRA)" To: dev@flink.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (FLINK-3614) Remove Non-Keyed Window Operator MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Aljoscha Krettek created FLINK-3614: --------------------------------------- Summary: Remove Non-Keyed Window Operator Key: FLINK-3614 URL: https://issues.apache.org/jira/browse/FLINK-3614 Project: Flink Issue Type: Improvement Components: Streaming Reporter: Aljoscha Krettek Assignee: Aljoscha Krettek I propose to remove the special Non-Keyed Window Operator and implement non-parallel windows by using the standard WindowOperator with a dummy KeySelector. Maintaining everything for two WindowOperators is a huge burden. The implementation is completely separate by now. For example, the Non-Keyed window operator does not use the StateBackend for state, i.e. cannot use RocksDB. Also, with upcoming changes (Merging/Session windows, aligned windows) this will only increase the maintenance burden. Also, the fast AlignedProcessingTimeWindows operators also only support the Parallel/Keyed case. -- This message was sent by Atlassian JIRA (v6.3.4#6332)