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Posted to common-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2015/05/06 05:26:57 UTC

[jira] [Updated] (HADOOP-11561) Join multiple files on the fly and read the records in order with a client

     [ https://issues.apache.org/jira/browse/HADOOP-11561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer updated HADOOP-11561:
--------------------------------------
    Labels: BB2015-05-TBR composite  (was: composite)

> Join multiple files on the fly and read the records in order with a client
> --------------------------------------------------------------------------
>
>                 Key: HADOOP-11561
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11561
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Jens Rabe
>            Assignee: Jens Rabe
>            Priority: Minor
>              Labels: BB2015-05-TBR, composite
>         Attachments: HADOOP-11561.002.patch, HADOOP-11561.003.patch, HADOOP-11561.patch
>
>   Original Estimate: 96h
>          Time Spent: 1h
>  Remaining Estimate: 0h
>
> In a scenario where there are many files which all share the same key/value types, e.g., when dealing with measured data from sensors, it should be possible to join multiple files. That means, there should be a reader which can be supplied with one or more directories containing files, and it should be possible to read the records of all files in order.



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