[jira] Updated: (HBASE-2209) Support of List [ ] in HBaseOutputWritable for serialization

["Kay Kay (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-2209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kay Kay updated HBASE-2209:
---------------------------

    Attachment: HBASE-2209.patch

List serialization / deserialization added. 

Type erasure gets in the way of smooth type safety on either ends of the wire, but that is no reason to convert a List<T> to a T [ ] before sending down the wire. 

> Support of List [ ] in HBaseOutputWritable for serialization 
> -------------------------------------------------------------
>
>                 Key: HBASE-2209
>                 URL: https://issues.apache.org/jira/browse/HBASE-2209
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Kay Kay
>         Attachments: HBASE-2209.patch
>
>
> On a higher language semantics , List < > are very useful for manipulation and when finally sent down to the wire - the protocol currently seems to take only [ ]  through an expensive copy. 
> Supporting List <T > directly would save us the copy in terms of memory and add to faster / deserialization. 

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