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Posted to dev@avro.apache.org by "Harsh J Chouraria (JIRA)" <ji...@apache.org> on 2010/10/24 16:54:18 UTC

[jira] Updated: (AVRO-682) Expose the DataFile's metadata entirely

     [ https://issues.apache.org/jira/browse/AVRO-682?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Harsh J Chouraria updated AVRO-682:
-----------------------------------

    Attachment: avro.metadata.datafile.r1.diff

Patch that adds a method such that the entire metadata map may be recovered via DataFileReader.

> 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
>
>   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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