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https://issues.apache.org/jira/browse/HIVE-18831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16413233#comment-16413233
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Sahil Takiar edited comment on HIVE-18831 at 3/25/18 11:48 PM:
---------------------------------------------------------------
[~lirui] added an updated patch.
After some more investigation, I decided to revert the changes to
{{KryoMessageCodec}}, sorry for the back and forth. It seems serializing Java
{{Throwable}} is tricky, and there is no guarantee that Java can successfully
serialize all {{Throwable}} objects (SPARK-8625 has some details). So instead,
I created a new class called {{SparkJobExceptionWrapper}} that wraps the full
exception stack, and the root cause message. Also, did some re-factoring of
{{SparkJobStatus}} to make it easier to differentiate errors thrown by the
{{SparkJobMonitor}} vs. {{JobHandle}}.
Added a bunch of more tests to {{TestSparkTask}} to validate all of this.
was (Author: stakiar):
[~lirui] added an updated patch.
After some more investigation, I decided to revert the changes to
{{KryoMessageCodec}}, sorry for the back and forth. It seems serializing Java
{{Throwable}}s is tricky, and there is no guarantee that Java can successfully
serialize all {{Throwable}} objects (SPARK-8625 has some details). So instead,
I created a new class called {{SparkJobExceptionWrapper}} that wraps the full
exception stack, and the root cause message. Also, did some re-factoring of
{{SparkJobStatus}} to make it easier to differentiate errors thrown by the
{{SparkJobMonitor}} vs. {{JobHandle}}.
Added a bunch of more tests to {{TestSparkTask}} to validate all of this.
> Differentiate errors that are thrown by Spark tasks
> ---------------------------------------------------
>
> Key: HIVE-18831
> URL: https://issues.apache.org/jira/browse/HIVE-18831
> Project: Hive
> Issue Type: Sub-task
> Components: Spark
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
> Priority: Major
> Attachments: HIVE-18831.1.patch, HIVE-18831.2.patch,
> HIVE-18831.3.patch, HIVE-18831.4.patch, HIVE-18831.6.patch, HIVE-18831.7.patch
>
>
> We propagate exceptions from Spark task failures to the client well, but we
> don't differentiate between errors from HS2 / RSC vs. errors thrown by
> individual tasks.
> Main motivation is that when the client sees a propagated Spark exception its
> difficult to know what part of the excution threw the exception.
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