Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-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 2397A11E4E for ; Fri, 29 Aug 2014 21:13:56 +0000 (UTC) Received: (qmail 73821 invoked by uid 500); 29 Aug 2014 21:13:55 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 73772 invoked by uid 500); 29 Aug 2014 21:13:55 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 73666 invoked by uid 99); 29 Aug 2014 21:13:55 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 29 Aug 2014 21:13:55 +0000 Date: Fri, 29 Aug 2014 21:13:55 +0000 (UTC) From: "Arpit Agarwal (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-6930) Improve replica eviction from RAM disk 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/HDFS-6930?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Arpit Agarwal updated HDFS-6930: -------------------------------- Attachment: HDFS-6930.01.patch > Improve replica eviction from RAM disk > -------------------------------------- > > Key: HDFS-6930 > URL: https://issues.apache.org/jira/browse/HDFS-6930 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: datanode > Affects Versions: HDFS-6581 > Reporter: Arpit Agarwal > Attachments: HDFS-6930.01.patch > > > The current replica eviction scheme is inefficient since it performs multiple file operations in the context of block allocation. > A better implementation would be asynchronous eviction when free space on RAM disk falls below a low watermark to make block allocation faster. -- This message was sent by Atlassian JIRA (v6.2#6252)