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 65E6918B9D for ; Tue, 25 Aug 2015 09:40:47 +0000 (UTC) Received: (qmail 29157 invoked by uid 500); 25 Aug 2015 09:40:47 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 29064 invoked by uid 500); 25 Aug 2015 09:40:47 -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 28890 invoked by uid 99); 25 Aug 2015 09:40:47 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 25 Aug 2015 09:40:47 +0000 Date: Tue, 25 Aug 2015 09:40:46 +0000 (UTC) From: "Hudson (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-8900) Compact XAttrs to optimize memory footprint. 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-8900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14711003#comment-14711003 ] Hudson commented on HDFS-8900: ------------------------------ FAILURE: Integrated in Hadoop-Yarn-trunk #1037 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/1037/]) HDFS-8900. Compact XAttrs to optimize memory footprint. (yliu) (yliu: rev eee0d4563c62647cfaaed6605ee713aaf69add78) * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestStartup.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/SerialNumberManager.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/web/JsonUtil.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/XAttrStorage.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/XAttrPermissionFilter.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/XAttrFormat.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirXAttrOp.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSImageFormatPBINode.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/XAttrHelper.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockStoragePolicySuite.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/SerialNumberMap.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/XAttrFeature.java * hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml * hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestXAttrFeature.java * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectory.java * hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSDirectory.java > Compact XAttrs to optimize memory footprint. > -------------------------------------------- > > Key: HDFS-8900 > URL: https://issues.apache.org/jira/browse/HDFS-8900 > Project: Hadoop HDFS > Issue Type: Improvement > Components: namenode > Reporter: Yi Liu > Assignee: Yi Liu > Fix For: 2.8.0 > > Attachments: HDFS-8900.001.patch, HDFS-8900.002.patch, HDFS-8900.003.patch, HDFS-8900.004.patch, HDFS-8900.005.patch > > > {code} > private final ImmutableList xAttrs; > {code} > Currently we use above in XAttrFeature, it's not efficient from memory point of view, since {{ImmutableList}} and {{XAttr}} have object memory overhead, and each object has memory alignment. > We can use a {{byte[]}} in XAttrFeature and do some compact in {{XAttr}}. -- This message was sent by Atlassian JIRA (v6.3.4#6332)