[
https://issues.apache.org/jira/browse/FLINK-6505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16214593#comment-16214593
]
ASF GitHub Bot commented on FLINK-6505:
---------------------------------------
Github user StefanRRichter commented on a diff in the pull request:
https://github.com/apache/flink/pull/4798#discussion_r146161007
--- Diff:
flink-contrib/flink-statebackend-rocksdb/src/main/java/org/apache/flink/contrib/streaming/state/RocksDBKeyedStateBackend.java
---
@@ -313,10 +317,16 @@ public void dispose() {
IOUtils.closeQuietly(dbOptions);
IOUtils.closeQuietly(columnOptions);
+ cleanInstanceBasePath();
--- End diff --
This again would not need the existence check that runs inside the method,
because at this point the directory should always exist.
> 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).
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
