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Posted to hdfs-issues@hadoop.apache.org by "Jing Zhao (JIRA)" <ji...@apache.org> on 2013/08/21 03:57:53 UTC

[jira] [Updated] (HDFS-5118) Extend LoadGenerator for testing NameNode retry cache

     [ https://issues.apache.org/jira/browse/HDFS-5118?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhao updated HDFS-5118:
----------------------------

    Attachment: HDFS-5118.000.patch

Initial patch for review. I simply tried the new LoadGeneratorWithRetry in a 5-node cluster, and looks like it works. Will do more tests later.
                
> Extend LoadGenerator for testing NameNode retry cache
> -----------------------------------------------------
>
>                 Key: HDFS-5118
>                 URL: https://issues.apache.org/jira/browse/HDFS-5118
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>    Affects Versions: 3.0.0
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: HDFS-5118.000.patch
>
>
> We plan to extend the current LoadGenerator so that the client is able to intentionally drop responses of NameNode RPC calls according to settings in configuration. In this way we can do better system test for NameNode retry cache, especially when NN failover happens.

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