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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AVRO-682) Expose the DataFile's metadata entirely
Date Mon, 25 Oct 2010 17:42:19 GMT

    [ https://issues.apache.org/jira/browse/AVRO-682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924644#action_12924644

Doug Cutting commented on AVRO-682:

Also, I think it's fine to expose the "avro." keys.

> Expose the DataFile's metadata entirely
> ---------------------------------------
>                 Key: AVRO-682
>                 URL: https://issues.apache.org/jira/browse/AVRO-682
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>    Affects Versions: 1.4.1
>         Environment: Linux, Java 1.6
>            Reporter: Harsh J Chouraria
>            Assignee: Harsh J Chouraria
>            Priority: Minor
>             Fix For: 1.5.0
>         Attachments: avro.metadata.datafile.r1.diff, avro.metadata.datafile.r1.diff,
>   Original Estimate: 0.02h
>  Remaining Estimate: 0.02h
> Right now, the DataFileReader (DataFileStream actually) only allows one to query the
meta data of a file by issuing a key. A user who does not know what metadata may be stored
in the file, has no way to find out by getting a list/map of all there is. Perhaps we should
provide a way for the user to retrieve global metadata info to query it back for values.
> Attached a patch (initial) that simply exposes the HashMap that contains the metadata
after initialization of the data file reader.

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