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Posted to yarn-issues@hadoop.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2018/09/07 19:56:00 UTC
[jira] [Assigned] (YARN-4961) Wrapper for leveldb DB to aid in
handling database exceptions
[ https://issues.apache.org/jira/browse/YARN-4961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Lowe reassigned YARN-4961:
--------------------------------
Assignee: Pradeep Ambati
Yes, exactly. Thanks for picking this up!
Currently it's very fragile to wield the database directly because instead of throwing checked IOExceptions when I/O errors occur it throws a runtime DBException. Having a wrapper class that provides the same methods but throwing checked IOExceptions instead of unchecked runtime exceptions would make it safer to use as a state store backend in Hadoop where we don't necessarily want to tear down the entire server when an I/O error occurs.
> Wrapper for leveldb DB to aid in handling database exceptions
> -------------------------------------------------------------
>
> Key: YARN-4961
> URL: https://issues.apache.org/jira/browse/YARN-4961
> Project: Hadoop YARN
> Issue Type: Improvement
> Reporter: Jason Lowe
> Assignee: Pradeep Ambati
> Priority: Major
>
> It would be nice to have a utility wrapper around leveldb's DB to translate the raw runtime DBExceptions into IOExceptions. This would help make the code using leveldb easier to read and less error-prone to allowing the runtime DBExceptions to escape and potentially terminate the calling process.
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