[ http://issues.apache.org/jira/browse/HADOOP-732?page=comments#action_12451802 ]
Runping Qi commented on HADOOP-732:
-----------------------------------
Strings sgould be fine.
> SequenceFile's header should allow to store metadata in the form of key/value pairs
> -----------------------------------------------------------------------------------
>
> Key: HADOOP-732
> URL: http://issues.apache.org/jira/browse/HADOOP-732
> Project: Hadoop
> Issue Type: New Feature
> Reporter: Runping Qi
>
> The sequence file currently stores a fixed list of metadata attributes, such as key/value
class names,
> compression method, etc. To make sequence file more self descriptable, it should allow
to store a list of key/value pairs. One particular attribute of interest is to indicate whether
the key/value classes are actually hadoop record classes,
> if so, store the DDls for the records. This way, we may create tools to extract DDl from
a sequence file and
> then generate necessary classes. It also make it possible to provide an interpretive
version of Hadoop record.
> This way, even in the situation where Hadoop or the application does not have the necessary
classes,
> a sequence file of Hadoop records can be read and deserialized "interpretively".
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