Varun Saxena commented on YARN-1984:

Thanks for the review [~jlowe].

I had missed handling DBException at one place and other places didnt handle 
because the caller method was handling DBException.
But in hindsight, I think we should handle the DBException in all the methods 
you mentioned above, as the method signature doesn't advertise throwing of 

I have uploaded a new patch. Kindly review.

> LeveldbTimelineStore does not handle db exceptions properly
> -----------------------------------------------------------
>                 Key: YARN-1984
>                 URL: https://issues.apache.org/jira/browse/YARN-1984
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 2.4.0
>            Reporter: Jason Lowe
>            Assignee: Varun Saxena
>             Fix For: 2.7.0
>         Attachments: YARN-1984.001.patch, YARN-1984.patch
> The org.iq80.leveldb.DB and DBIterator methods throw runtime exceptions 
> rather than IOException which can easily leak up the stack and kill threads 
> (e.g.: the deletion thread).

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