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https://issues.apache.org/jira/browse/HBASE-5448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13537197#comment-13537197
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stack commented on HBASE-5448:
------------------------------
[~ghelmling] One other question G. How to do exceptions in a coprocessor? I
see where we set the exception on the controller if there is one, but should we
then abandon further processing -- return? We need to call the RpcCallback
done, though, right?
Here is example from tail of an endpoint cp implementation:
{code}
...
} catch (IOException e) {
ResponseConverter.setControllerException(controller, e);
// Set result to -1 to indicate error.
sumResult = -1;
LOG.info("Setting sum result to -1 to indicate error", e);
} finally {
if (scanner != null) {
try {
scanner.close();
} catch (IOException e) {
ResponseConverter.setControllerException(controller, e);
sumResult = -1;
LOG.info("Setting sum result to -1 to indicate error", e);
}
}
}
done.run(SumResponse.newBuilder().setSum(sumResult).build());
}
{code}
Is that how you'd do it?
Thanks.
> Support for dynamic coprocessor endpoints with PB-based RPC
> -----------------------------------------------------------
>
> Key: HBASE-5448
> URL: https://issues.apache.org/jira/browse/HBASE-5448
> Project: HBase
> Issue Type: Sub-task
> Components: IPC/RPC, master, migration, regionserver
> Reporter: Todd Lipcon
> Assignee: Gary Helmling
> Fix For: 0.96.0
>
> Attachments: HBASE-5448_2.patch, HBASE-5448_3.patch,
> HBASE-5448_4.patch, HBASE-5448.patch
>
>
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