From issues-return-18418-archive-asf-public=cust-asf.ponee.io@kylin.apache.org Fri Jun 29 10:13:04 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 1BFB1180679 for ; Fri, 29 Jun 2018 10:13:03 +0200 (CEST) Received: (qmail 38479 invoked by uid 500); 29 Jun 2018 08:13:03 -0000 Mailing-List: contact issues-help@kylin.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@kylin.apache.org Delivered-To: mailing list issues@kylin.apache.org Received: (qmail 38470 invoked by uid 99); 29 Jun 2018 08:13:03 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd4-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 29 Jun 2018 08:13:03 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd4-us-west.apache.org (ASF Mail Server at spamd4-us-west.apache.org) with ESMTP id C5FAEC00C8 for ; Fri, 29 Jun 2018 08:13:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd4-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd4-us-west.apache.org [10.40.0.11]) (amavisd-new, port 10024) with ESMTP id Y5tVmwZF6Gne for ; Fri, 29 Jun 2018 08:13:02 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id 741EA60CEF for ; Fri, 29 Jun 2018 08:13:01 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id BEF6AE015A for ; Fri, 29 Jun 2018 08:13:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 48E2C2183D for ; Fri, 29 Jun 2018 08:13:00 +0000 (UTC) Date: Fri, 29 Jun 2018 08:13:00 +0000 (UTC) From: "Ma Gang (JIRA)" To: issues@kylin.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (KYLIN-3434) Support prepare statement in Kylin server side MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Ma Gang created KYLIN-3434: ------------------------------ Summary: Support prepare statement in Kylin server side Key: KYLIN-3434 URL: https://issues.apache.org/jira/browse/KYLIN-3434 Project: Kylin Issue Type: Improvement Reporter: Ma Gang Assignee: Ma Gang Kylin use calcite as sql engine, when a sql comes to Kylin server, it requi= res to be parsed, optimized, code gen, and then query Kylin's cube storage,= the previous 3 steps often take 50-150 ms to complete(depends on the compl= exity of the sql). If we support=C2=A0to cache the parsed result in Kylin s= erver, the=C2=A03 steps will be saved. The idea is to cache calcite's PreparedStatement object and related OLAPCon= texts in the server side, when the prepare request comes with the same sql,= reuse the PreparedStatement to do the execution. Since the=C2=A0PreparedSt= atement is not thread safe, so I planned to use ObjectPool to cache the=C2= =A0PreparedStatement.(use apache commons-pool lib) -- This message was sent by Atlassian JIRA (v7.6.3#76005)