Github user StefanRRichter commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3466#discussion_r106385143
  
    --- Diff: 
flink-runtime/src/main/java/org/apache/flink/runtime/state/filesystem/FsStateBackend.java
 ---
    @@ -97,6 +100,27 @@ public FsStateBackend(String checkpointDataUri) throws 
IOException {
         *
         * @param checkpointDataUri The URI describing the filesystem (scheme 
and optionally authority),
         *                          and the path to the checkpoint data 
directory.
    +    * @param asynchronousSnapshots Switch to enable asynchronous snapshots.
    +    *
    +    * @throws IOException Thrown, if no file system can be found for the 
scheme in the URI.
    +    */
    +   public FsStateBackend(String checkpointDataUri, boolean 
asynchronousSnapshots) throws IOException {
    --- End diff --
    
    For now, I suggest to keep it as is and as soon as your PR goes in, we have 
a followup, that introduced a single entry point to a builder for all backend 
related configuration options that helps the user to see and navigate all 
options in a more centralized way, e.g. 
`KeyedBackends.heap().async(true).create()`. 


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