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https://issues.apache.org/jira/browse/FLINK-7683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16180651#comment-16180651
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ASF GitHub Bot commented on FLINK-7683:
---------------------------------------
Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/4722#discussion_r141034332
--- Diff:
flink-contrib/flink-statebackend-rocksdb/src/test/java/org/apache/flink/contrib/streaming/state/RocksDBStateBackendTest.java
---
@@ -442,6 +444,32 @@ public void testDisposeDeletesAllDirectories() throws
Exception {
}
@Test
+ public void testGetKeys() throws Exception {
--- End diff --
This test should go into `StateBackendTestBase`. This way, you don't have
to repeat it for the Rocks and the Heap backend.
> Add method to iterate over all of the existing keys in a statebackend
> ---------------------------------------------------------------------
>
> Key: FLINK-7683
> URL: https://issues.apache.org/jira/browse/FLINK-7683
> Project: Flink
> Issue Type: New Feature
> Components: State Backends, Checkpointing
> Reporter: Piotr Nowojski
> Assignee: Piotr Nowojski
>
> This is required to make possible preserving backward compatibility while
> changing state definition of a keyed state operator (to do so operator must
> iterate over all of the existing keys and rewrites them into a new state
> variable).
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