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Aljoscha Krettek commented on FLINK-3035:
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Hi,
Redis would not be used for snapshots, only as an out-of-core key/value store.
For the actual snapshots we would store the data in HDFS, as is done for the
{{FsStateBackend}} and {{RocksDBStateBackend}}. I think, however, that for
other reasons we will probably not be able to implement this well. The problem
is that we have to somehow get at the state in redis for checkpointing. And if
we use only one Redis instance for all states then this will be problematic.
> Redis as State Backend
> ----------------------
>
> Key: FLINK-3035
> URL: https://issues.apache.org/jira/browse/FLINK-3035
> Project: Flink
> Issue Type: New Feature
> Components: Streaming
> Reporter: Matthias J. Sax
> Assignee: Subhobrata Dey
> Priority: Minor
>
> Add Redis as a state backend for distributed snapshots.
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