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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9998) Provide methods to clear only part of the DNSToSwitchMapping
Date Thu, 26 Sep 2013 15:38:03 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13778907#comment-13778907
] 

Hudson commented on HADOOP-9998:
--------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #4472 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4472/])
HADOOP-9998. Provide methods to clear only part of the DNSToSwitchMapping. (Junping Du via
Colin Patrick McCabe) (cmccabe: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1526567)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/CachedDNSToSwitchMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/DNSToSwitchMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/ScriptBasedMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/TableMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/StaticMapping.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/net/TestSwitchMapping.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
* /hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs/src/test/java/org/apache/hadoop/mapreduce/v2/hs/TestJobHistoryParsing.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/api/impl/TestAMRMClientContainerRequest.java
* /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestRackResolver.java

                
> Provide methods to clear only part of the DNSToSwitchMapping
> ------------------------------------------------------------
>
>                 Key: HADOOP-9998
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9998
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: net
>    Affects Versions: 2.0.6-alpha
>            Reporter: Junping Du
>            Assignee: Junping Du
>             Fix For: 2.3.0
>
>         Attachments: HDFS-5208-v1.patch, HDFS-5208-v2.patch
>
>
> After HDFS-4521, once a DN is registered with invalid networktopology, all cached rack
info in DNSToSwitchMapping will be cleared. We should only clear cache on specific nodes.

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