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https://issues.apache.org/jira/browse/HDDS-2175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16939841#comment-16939841
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Supratim Deka commented on HDDS-2175:
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Note from [~aengineer] posted on the github PR:
<comment>
Also are these call stacks something that the end user should ever see? I have
always found as user a call stack useless, it might be useful for the developer
for debugging purposes, but clients are generally things used by real users.
Maybe if these stacks are not logged in the ozone.log, we can log them,
provided we can guard them via a config key and by default we do not do that.
</comment>
> Propagate System Exceptions from the OzoneManager
> -------------------------------------------------
>
> Key: HDDS-2175
> URL: https://issues.apache.org/jira/browse/HDDS-2175
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
> Components: Ozone Manager
> Reporter: Supratim Deka
> Assignee: Supratim Deka
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Exceptions encountered while processing requests on the OM are categorized as
> business exceptions and system exceptions. All of the business exceptions are
> captured as OMException and have an associated status code which is returned
> to the client. The handling of these is not going to be changed.
> Currently system exceptions are returned as INTERNAL ERROR to the client with
> a 1 line message string from the exception. The scope of this jira is to
> capture system exceptions and propagate the related information(including the
> complete stack trace) back to the client.
> There are 3 sub-tasks required to achieve this
> 1. Separate capture and handling for OMException and the other
> exceptions(IOException). For system exceptions, use Hadoop IPC
> ServiceException mechanism to send the stack trace to the client.
> 2. track and propagate exceptions inside Ratis OzoneManagerStateMachine and
> propagate up to the OzoneManager layer (on the leader). Currently, these
> exceptions are not being tracked.
> 3. Handle and propagate exceptions from Ratis.
> Will raise jira for each sub-task.
>
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