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https://issues.apache.org/jira/browse/HADOOP-18816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated HADOOP-18816:
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Labels: pull-request-available (was: )
> Rebuild Exceptions on Client side to get genuine exceptions
> -----------------------------------------------------------
>
> Key: HADOOP-18816
> URL: https://issues.apache.org/jira/browse/HADOOP-18816
> Project: Hadoop Common
> Issue Type: Task
> Reporter: Janus Chow
> Assignee: Janus Chow
> Priority: Major
> Labels: pull-request-available
>
> In current's RPC design, if Server sends an exception back, Client can only
> rebuild the exception according to the original exception's error message, if
> the exceptions has some fields containing important information, they will be
> discarded since we can not rebuild them based on message string easily.
> This ticket is to introduce a new interface for Exceptions which supports
> reconstructing. If Clients want to rebuild the exception, they can just
> implement the methods and the reconstruction will be done automatically.
> The interface uses String[] as parameter for simplicity. I thought of using
> Protobuf to store all the exceptions or fields, but the generacity can not be
> perfectlly met. So we need Client to support it by accepting "String[]" and
> transform the String to it's original type.
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