[ https://issues.apache.org/jira/browse/HADOOP-941?page=com.
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Doug Cutting updated HADOOP-941:
--------------------------------
Status: Open (was: Patch Available)
This still copies code from elsewhere in the Hadoop tree (as
noted by David, above). In particular, Util.java copies a
number of methods from WritableUtils.java and a number from
WritableComparator.java. We should avoid code replication
if at all possible. Is there any other copied code here?
> Enhancements to Hadoop record I/O - Part 1
> ------------------------------------------
>
> Key: HADOOP-941
> URL: http
s://issues.apache.org/jira/browse/HADOOP-941
> Project: Hadoop
> Issue Type: Improvement
> Components: record
> Affects Versions: 0.10.1
> Environment: All
> Reporter: Milind Bhandarkar
> Assigned To: Milind Bhandarkar
> Fix For: 0.12.0
>
> Attachments: jute-patch.txt
>
>
> Hadoop record I/O can be used effectively outside of
Hadoop. It would increase its utility if developers can use
it without having to import hadoop classes, or having to
depend on Hadoop jars. Following changes to the current
translator and runtime are proposed.
> Proposed Changes:
> 1. Use java.lang.String as a native type for ustring
(instead of Text.)
> 2. Provide a Buffer class as a native Java type for
buffer (instead of BytesWritable), so that later
BytesWritable could be implemented as following DDL:
> module org.apache.hadoop.io {
> record BytesWritable {
> buffer value;
> }
> }
> 3. Member names in generated classes should not have
prefixes 'm' before their names. In the above example, the
private member name would be 'value' not 'mvalue' as it is
done now.
> 4. Convert getters and setters to have CamelCase. e.g.
in the above example the getter will be:
> public Buffer getValue();
> 5. Generate clone() methods for records in Java i.e.
the generated classes should implement Cloneable.
> 6. Make generated Java codes for maps and vectors use
Java generics.
> These are the proposed user-visible changes.
Internally, the translator will be restructured so that it
is easier to plug-in translators for different targets.
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