Return-Path: X-Original-To: apmail-hive-dev-archive@www.apache.org Delivered-To: apmail-hive-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 5B19217464 for ; Tue, 7 Oct 2014 16:57:35 +0000 (UTC) Received: (qmail 19506 invoked by uid 500); 7 Oct 2014 16:57:35 -0000 Delivered-To: apmail-hive-dev-archive@hive.apache.org Received: (qmail 19437 invoked by uid 500); 7 Oct 2014 16:57:34 -0000 Mailing-List: contact dev-help@hive.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@hive.apache.org Delivered-To: mailing list dev@hive.apache.org Received: (qmail 19426 invoked by uid 500); 7 Oct 2014 16:57:34 -0000 Delivered-To: apmail-hadoop-hive-dev@hadoop.apache.org Received: (qmail 19422 invoked by uid 99); 7 Oct 2014 16:57:34 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 07 Oct 2014 16:57:34 +0000 Date: Tue, 7 Oct 2014 16:57:34 +0000 (UTC) From: "Sean Busbey (JIRA)" To: hive-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HIVE-8379) NanoTimeUtils performs some work needlessly 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/HIVE-8379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14162114#comment-14162114 ] Sean Busbey commented on HIVE-8379: ----------------------------------- Can we get a JVM microbenchmark to ensure the jit isn't already taking care of this for us? (since those are all constants) > NanoTimeUtils performs some work needlessly > ------------------------------------------- > > Key: HIVE-8379 > URL: https://issues.apache.org/jira/browse/HIVE-8379 > Project: Hive > Issue Type: Sub-task > Reporter: Brock Noland > Priority: Minor > > Portions of the math done with the constants can be pre-computed: > https://github.com/apache/hive/blob/trunk/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/timestamp/NanoTimeUtils.java#L70 -- This message was sent by Atlassian JIRA (v6.3.4#6332)