[jira] [Commented] (YARN-710) Add to ser/deser methods to RecordFactory

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

    [ https://issues.apache.org/jira/browse/YARN-710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13663247#comment-13663247 ] 

Alejandro Abdelnur commented on YARN-710:
-----------------------------------------

Per discussion in the yarn-dev@, http://mail-archives.apache.org/mod_mbox/hadoop-yarn-dev/201305.mbox/browser , as per Bobby suggestion, a simple way to do this would be something along the following lines:

{code}
public interface RecordFactory {
  public <T> T newRecordInstance(Class<T> clazz) throws YarnException;

public <T> T newRecordInstance(Class<T> clazz, byte[] data) throws
YarnException;

public <T> byte[] fromRecordInstance(T t) throws YarnException;
}
{code}


                
> Add to ser/deser methods to RecordFactory
> -----------------------------------------
>
>                 Key: YARN-710
>                 URL: https://issues.apache.org/jira/browse/YARN-710
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: api
>    Affects Versions: 2.0.4-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Alejandro Abdelnur
>             Fix For: 2.0.5-beta
>
>
> I order to do things like AMs failover and checkpointing I need to serialize app IDs, app attempt IDs, containers and/or IDs,  resource requests, etc.
> Because we are wrapping/hiding the PB implementation from the APIs, we are hiding the built in PB ser/deser capabilities.

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