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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3315) New binary file format
Date Mon, 12 May 2008 18:44:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12596159#action_12596159
] 

Owen O'Malley commented on HADOOP-3315:
---------------------------------------

* getClosest should specify that it means closest after the given key
* row ids should be longs
* does the compression of the key index follow tfile.compressionCodec?
* should the ioffset and moffset (or my key, row, and meta offsets) be vints?
* I think the append method that takes an input stream should be:
{code}
void appendRaw(int keyLength, InputStream key, int valueLength, InputStream value) throws
IOException;
{code}
* Most of the methods should have "throws IOException"
* It is useful to be able to get the key/value class names without the class. I'd replace
the getKeyClass and getValueClass with string equivalents:
{code}
String getKeyClassName();
String getValueClassName();
{code}
* I assume that seekToKey returns false, if the key does not exist, but the file pointer may
have moved.

> New binary file format
> ----------------------
>
>                 Key: HADOOP-3315
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3315
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: io
>            Reporter: Owen O'Malley
>            Assignee: Srikanth Kakani
>         Attachments: Tfile-1.pdf
>
>
> SequenceFile's block compression format is too complex and requires 4 codecs to compress
or decompress. It would be good to have a file format that only needs 

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