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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-10208) Addendum for HDFS-9579: to handle the case when client machine can't resolve network path
Date Tue, 17 May 2016 02:11:13 GMT

    [ https://issues.apache.org/jira/browse/HDFS-10208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15285882#comment-15285882
] 

Hudson commented on HDFS-10208:
-------------------------------

FAILURE: Integrated in Hadoop-trunk-Commit #9773 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/9773/])
HDFS-10208. Addendum for HDFS-9579: to handle the case when client (sjlee: rev 61f46be071e42f9eb49a54b1bd2e54feac59f808)
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeysPublic.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/net/TestNetworkTopology.java
* hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/ClientContext.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
* hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
* hadoop-common-project/hadoop-common/src/main/resources/core-default.xml
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java
* hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NodeBase.java


> Addendum for HDFS-9579: to handle the case when client machine can't resolve network
path
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-10208
>                 URL: https://issues.apache.org/jira/browse/HDFS-10208
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Ming Ma
>            Assignee: Ming Ma
>             Fix For: 2.9.0, 3.0.0-alpha1
>
>         Attachments: HDFS-10208-2.patch, HDFS-10208-3.patch, HDFS-10208-4.patch, HDFS-10208-5.patch,
HDFS-10208.patch
>
>
> If DFSClient runs on a machine that can't resolve network path, {{DNSToSwitchMapping}}
will return {{DEFAULT_RACK}}. In addition, if somehow {{dnsToSwitchMapping.resolve}} returns
null, that will cause exception when it tries to create {{clientNode}}. In either case, there
is no need to create {{clientNode}} and we should treat its network distance with any datanode
as Integer.MAX_VALUE.
> {noformat}
>     clientNode = new NodeBase(clientHostName,
>         dnsToSwitchMapping.resolve(nodes).get(0));
> {noformat}



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