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Posted to common-dev@hadoop.apache.org by "Jothi Padmanabhan (JIRA)" <ji...@apache.org> on 2009/04/01 16:29:13 UTC

[jira] Commented: (HADOOP-5266) Values Iterator should support "mark" and "reset"

    [ https://issues.apache.org/jira/browse/HADOOP-5266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694546#action_12694546 ] 

Jothi Padmanabhan commented on HADOOP-5266:
-------------------------------------------

The attached patch supports for both the old and new API. If this needs to be done only for the new API, I could remove the relevant changes for the old api in the next iteration.

> Values Iterator should support "mark" and "reset"
> -------------------------------------------------
>
>                 Key: HADOOP-5266
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5266
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Jothi Padmanabhan
>            Assignee: Jothi Padmanabhan
>             Fix For: 0.21.0
>
>         Attachments: hadoop-5266-v1.patch
>
>
> Some users have expressed interest in having a mark-reset functionality on values iterator. Users can call mark() at any point during the iteration process and a subsequent reset() should move the iterator to the last value emitted when mark() was called. 

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