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Posted to issues@flink.apache.org by "Bowen Li (JIRA)" <ji...@apache.org> on 2017/10/09 06:08:00 UTC
[jira] [Assigned] (FLINK-6505) Proactively cleanup local FS for
RocksDBKeyedStateBackend on startup
[ https://issues.apache.org/jira/browse/FLINK-6505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bowen Li reassigned FLINK-6505:
-------------------------------
Assignee: Bowen Li
> Proactively cleanup local FS for RocksDBKeyedStateBackend on startup
> --------------------------------------------------------------------
>
> Key: FLINK-6505
> URL: https://issues.apache.org/jira/browse/FLINK-6505
> Project: Flink
> Issue Type: Sub-task
> Components: State Backends, Checkpointing
> Affects Versions: 1.3.0
> Reporter: Stefan Richter
> Assignee: Bowen Li
> Fix For: 1.4.0
>
>
> In {{RocksDBKeyedStateBackend}}, the {{instanceBasePath}} is cleared on {{dispose()}}. I think it might make sense to also clear this directory when the backend is created, in case something crashed and the backend never reached {{dispose()}}. At least for previous runs of the same job, we can know what to delete on restart.
> In general, it is very important for this backend to clean up the local FS, because the local quota might be very limited compared to the DFS. And a node that runs out of local disk space can bring down the whole job, with no way to recover (it might always get rescheduled to that node).
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