GitHub user gyfora opened a pull request:
https://github.com/apache/flink/pull/1918
[FLINK-3798] [streaming] Clean up RocksDB backend field/method access
The RocksDB state backend uses a lot package private methods and fields
which makes it very hard to subclass the different parts for added
functionality. I think these should be protected instead.
Also the AbstractRocksDBState declares some methods final when there are
use-cases when a subclass migh want to call them.
Just to give you an example I am creating a version of the value state
which would keep a small cache on heap. For this it would be enough to subclass
the RockDBStateBackend and RocksDBVAlue state classes if the above mentioned
changes were made. Now I have to use reflection to access package private
fields and actually copy classes due to final methods.
Activity
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gyfora/flink rocks-access
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1918.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1918
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commit a1e323650bd5f603fbf3809fe1fe901cbab1a56b
Author: Gyula Fora <[email protected]>
Date: 2016-04-20T19:33:30Z
[FLINK-3798] [streaming] Clean up RocksDB backend field/method access
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