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https://issues.apache.org/jira/browse/YARN-5269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15903540#comment-15903540
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Haibo Chen edited comment on YARN-5269 at 3/9/17 10:08 PM:
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Based on today's discussion, questions we need to answer are
1) for the synchronous putEntities() API, what do we promise if no
error/exception is returned to clients? In what scenarios do we bubble
exceptions/errors to clients?
2) similarly for the asynchronous write API
This is more to explicate the semantics+guarantees of our write API so that
clients will have correct expectations. I'll check the existing code base and
share my findings. [~vrushalic], [~jrottinghuis] can chime in on more
complicated scenarios where spooled-buffered-mutator is involved.
was (Author: haibochen):
Based on today's discussion, questions we need to answer are
1) for the synchronous putEntities() API, what do we promise if no
error/exception is returned to clients? In what scenarios do we bubble
exceptions/errors to clients?
2) similarly for the asynchronous write API
This is more to explicate the semantics+guarantees of our write API so that
clients will have correct expectations. I'll check the existing code base and
share my findings. [~vrushalic], [~jrottinghuis] chime in on more complicated
scenarios where spooled-buffered-mutator is involved.
> Bubble exceptions and errors all the way up the calls, including to clients.
> ----------------------------------------------------------------------------
>
> Key: YARN-5269
> URL: https://issues.apache.org/jira/browse/YARN-5269
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: YARN-2928
> Reporter: Joep Rottinghuis
> Assignee: Haibo Chen
> Labels: YARN-5355, yarn-5355-merge-blocker
>
> Currently we ignore (swallow) exception from the HBase side in many cases
> (reads and writes).
> Also, on the client side, neither TimelineClient#putEntities (the v2 flavor)
> nor the #putEntitiesAsync method return any value.
> For the second drop we may want to consider how we properly bubble up
> exceptions throughout the write and reader call paths and if we want to
> return a response in putEntities and some future kind of result for
> putEntitiesAsync.
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