Return-Path: X-Original-To: apmail-hadoop-mapreduce-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-mapreduce-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 A057A110EF for ; Thu, 5 Jun 2014 00:06:02 +0000 (UTC) Received: (qmail 26437 invoked by uid 500); 5 Jun 2014 00:06:02 -0000 Delivered-To: apmail-hadoop-mapreduce-issues-archive@hadoop.apache.org Received: (qmail 26370 invoked by uid 500); 5 Jun 2014 00:06:02 -0000 Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: mapreduce-issues@hadoop.apache.org Delivered-To: mailing list mapreduce-issues@hadoop.apache.org Received: (qmail 26360 invoked by uid 99); 5 Jun 2014 00:06:02 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Jun 2014 00:06:02 +0000 Date: Thu, 5 Jun 2014 00:06:02 +0000 (UTC) From: "Wangda Tan (JIRA)" To: mapreduce-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (MAPREDUCE-5196) CheckpointAMPreemptionPolicy implements preemption in MR AM via checkpointing 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/MAPREDUCE-5196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14018357#comment-14018357 ] Wangda Tan commented on MAPREDUCE-5196: --------------------------------------- Hi [~curino], Thanks for your clarifications on my question, it's clear to me now. For the MAPREDUCE-5269, please feel free to let me know if I can help with review. Wangda > CheckpointAMPreemptionPolicy implements preemption in MR AM via checkpointing > ------------------------------------------------------------------------------ > > Key: MAPREDUCE-5196 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-5196 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: mr-am, mrv2 > Reporter: Carlo Curino > Assignee: Carlo Curino > Fix For: 3.0.0 > > Attachments: MAPREDUCE-5196.1.patch, MAPREDUCE-5196.2.patch, MAPREDUCE-5196.3.patch, MAPREDUCE-5196.patch, MAPREDUCE-5196.patch > > > This JIRA tracks a checkpoint-based AM preemption policy. The policy handles propagation of the preemption requests received from the RM to the appropriate tasks, and bookeeping of checkpoints. Actual checkpointing of the task state is handled in upcoming JIRAs. -- This message was sent by Atlassian JIRA (v6.2#6252)