Re: Clarification on state backend parameters

Posted by bowen.li on
URL: http://deprecated-apache-flink-user-mailing-list-archive.369.s1.nabble.com/Clarification-on-state-backend-parameters-tp11419p13745.html

FYI, http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Clarification-on-state-backend-parameters-td11419.html here's the context that discussed differences among:

state.backend.fs.checkpointdir

state.backend.rocksdb.checkpointdir

state.checkpoints.dir

On Wed, Jun 14, 2017 at 12:20 PM, bowen.li <[hidden email]> wrote:

Hi guys,
    This is great clarification!

    An extended question from me is, what's the difference between
`state.checkpoints.dir` and the param you pass in to RocksDBStateBackend
constructor in`public RocksDBStateBackend(URI checkpointDataUri) throws
IOException`? They are really confusing.

    I specified checkpointDataUri but got error of `CheckpointConfig says to
persist periodic checkpoints, but no checkpoint directory has been
configured. You can configure configure one via key
'state.checkpoints.dir'.`.

Thanks,
Bowen



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