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Posted to hdfs-issues@hadoop.apache.org by "Junping Du (JIRA)" <ji...@apache.org> on 2013/09/14 17:16:51 UTC

[jira] [Updated] (HDFS-5208) Only clear network location cache on specific nodes if invalid NetworkTopology happens

     [ https://issues.apache.org/jira/browse/HDFS-5208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Junping Du updated HDFS-5208:
-----------------------------

    Attachment: HDFS-5208-v1.patch

Update the patch. Please note that the additional API added in DNSToSwitchMapping is not just for invalid topology case, but we may also provide API/CLI to refresh node's network topology for HDFS/YARN later to handle the topology changes.
                
> Only clear network location cache on specific nodes if invalid NetworkTopology happens
> --------------------------------------------------------------------------------------
>
>                 Key: HDFS-5208
>                 URL: https://issues.apache.org/jira/browse/HDFS-5208
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Junping Du
>            Assignee: Junping Du
>         Attachments: HDFS-5208-v1.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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