Dong Li reopened KYLIN-2913:

Found a critical bug on this patch, if user set job retry number as 1, andĀ 

kylin.job.retry-exception-classes as empty as default, then all job steps will 
run 2 times, and Merge job will fail.

[~gwang3] pleaseĀ have a look. thanks!

> Enable job retry for configurable exceptions
> --------------------------------------------
>                 Key: KYLIN-2913
>                 URL: https://issues.apache.org/jira/browse/KYLIN-2913
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Job Engine
>    Affects Versions: v2.1.0
>            Reporter: Wang, Gang
>            Assignee: Wang, Gang
>            Priority: Minor
>             Fix For: v2.3.0
>         Attachments: 
> 0001-KYLIN-2913-Enable-job-retry-for-configurable-excepti.patch
> In our production environment, we always get some certain exceptions from 
> Hadoop or HBase, like 
> "org.apache.kylin.job.exception.NoEnoughReplicationException", 
> "java.util.ConcurrentModificationException", which results in job failure. 
> While, these exceptions can be handled by retry actually. So, it will be much 
> more convenient if we are able to make job retry on some configurable 
> exceptions.

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