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Posted to common-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2008/07/19 00:39:31 UTC

[jira] Updated: (HADOOP-3169) LeaseChecker daemon should not be started in DFSClient constructor

     [ https://issues.apache.org/jira/browse/HADOOP-3169?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsz Wo (Nicholas), SZE updated HADOOP-3169:
-------------------------------------------

    Attachment: 3169_20080718.patch

3169_20080718.patch: start the lease checker daemon when the first file is created, not in the DFSClient constructor.

> LeaseChecker daemon should not be started in DFSClient constructor
> ------------------------------------------------------------------
>
>                 Key: HADOOP-3169
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3169
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>         Attachments: 3169_20080718.patch
>
>
> LeaseChecker daemon periodically renew leases with NameNode.  However, if there is no file creation, LeaseChecker daemon should not be started for saving resources and better performance.

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