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 E33C611454 for ; Tue, 3 Jun 2014 20:12:03 +0000 (UTC) Received: (qmail 93188 invoked by uid 500); 3 Jun 2014 20:12:03 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 93141 invoked by uid 500); 3 Jun 2014 20:12:03 -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 93130 invoked by uid 99); 3 Jun 2014 20:12:03 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 03 Jun 2014 20:12:03 +0000 Date: Tue, 3 Jun 2014 20:12:03 +0000 (UTC) From: "Hudson (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-6268) Better sorting in NetworkTopology#pseudoSortByDistance when no local node is found 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-6268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017074#comment-14017074 ] Hudson commented on HDFS-6268: ------------------------------ SUCCESS: Integrated in Hadoop-trunk-Commit #5649 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/5649/]) HDFS-6268. Better sorting in NetworkTopology#pseudoSortByDistance when no local node is found. (wang) (wang: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1599734) * /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java * /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopologyWithNodeGroup.java * /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestNetworkTopologyWithNodeGroup.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestGetBlocks.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/snapshot/TestSnapshotFileLength.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/net/TestNetworkTopology.java > Better sorting in NetworkTopology#pseudoSortByDistance when no local node is found > ---------------------------------------------------------------------------------- > > Key: HDFS-6268 > URL: https://issues.apache.org/jira/browse/HDFS-6268 > Project: Hadoop HDFS > Issue Type: Improvement > Affects Versions: 2.4.0 > Reporter: Andrew Wang > Assignee: Andrew Wang > Priority: Minor > Fix For: 2.5.0 > > Attachments: hdfs-6268-1.patch, hdfs-6268-2.patch, hdfs-6268-3.patch, hdfs-6268-4.patch, hdfs-6268-5.patch > > > In NetworkTopology#pseudoSortByDistance, if no local node is found, it will always place the first rack local node in the list in front. > This became an issue when a dataset was loaded from a single datanode. This datanode ended up being the first replica for all the blocks in the dataset. When running an Impala query, the non-local reads when reading past a block boundary were all hitting this node, meaning massive load skew. -- This message was sent by Atlassian JIRA (v6.2#6252)