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https://issues.apache.org/jira/browse/HADOOP-11561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jens Rabe updated HADOOP-11561:
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Description: 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 chain-load 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. (was: In a
scenario where there are many MapFiles which all share the same key/value
types, e.g., when dealing with measured data from sensors, it should be
possible to chain-load multiple MapFiles. That means, there should be a reader
which can be supplied with one or more directories containing MapFiles, and it
should be possible to read the records of all files in order.)
Summary: Join multiple files on the fly and read the records in order
(was: It should be possible to chain-load multiple MapFiles on the fly and read
the records in an ascending order)
> Join multiple files on the fly and read the records in order
> ------------------------------------------------------------
>
> 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: composite
> Attachments: HADOOP-11561.patch
>
> Original Estimate: 96h
> Remaining Estimate: 96h
>
> 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 chain-load 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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