Return-Path: X-Original-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-yarn-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id D2A2F17AE1 for ; Mon, 21 Sep 2015 20:57:05 +0000 (UTC) Received: (qmail 90391 invoked by uid 500); 21 Sep 2015 20:57:05 -0000 Delivered-To: apmail-hadoop-yarn-issues-archive@hadoop.apache.org Received: (qmail 90334 invoked by uid 500); 21 Sep 2015 20:57:05 -0000 Mailing-List: contact yarn-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: yarn-issues@hadoop.apache.org Delivered-To: mailing list yarn-issues@hadoop.apache.org Received: (qmail 90318 invoked by uid 99); 21 Sep 2015 20:57:05 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 21 Sep 2015 20:57:05 +0000 Date: Mon, 21 Sep 2015 20:57:05 +0000 (UTC) From: "Li Lu (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (YARN-3942) Timeline store to read events from HDFS 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/YARN-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Li Lu updated YARN-3942: ------------------------ Attachment: YARN-3942-leveldb.001.patch Thanks [~jlowe] for working on this! On top of the existing patch I built a new storage to move the in memory hash map storage to a level db database. The original in memory timeline store is not supposed to be used in production environments. The price for the new level db hash map storage is latency: it generally takes more time to fully load the entities into level db. Had an offline discussion with [~xgong] and seems like we need to reduce the granularity of caching to improve latency. We may want to address this problem in a separate JIRA. > Timeline store to read events from HDFS > --------------------------------------- > > Key: YARN-3942 > URL: https://issues.apache.org/jira/browse/YARN-3942 > Project: Hadoop YARN > Issue Type: Improvement > Components: timelineserver > Reporter: Jason Lowe > Assignee: Jason Lowe > Attachments: YARN-3942-leveldb.001.patch, YARN-3942.001.patch > > > This adds a new timeline store plugin that is intended as a stop-gap measure to mitigate some of the issues we've seen with ATS v1 while waiting for ATS v2. The intent of this plugin is to provide a workable solution for running the Tez UI against the timeline server on a large-scale clusters running many thousands of jobs per day. -- This message was sent by Atlassian JIRA (v6.3.4#6332)