Hi wanglei,

> Is there an embeded  RocksDB  service in the flink task?

Yes, and "RocksDB is an embeddable persistent key-value store for fast
storage". [1]

1. http://rocksdb.org/

Thanks,
Biao /'bɪ.aʊ/



On Wed, Aug 7, 2019 at 7:27 PM miki haiat <miko5...@gmail.com> wrote:

> There  is no need to add an external RocksDB instance
>   .
> *The RocksDBStateBackend holds in-flight data in a RocksDB
> <http://rocksdb.org/> database that is (per default) stored in the
> TaskManager data directories.  *
>
> [1]
> https://ci.apache.org/projects/flink/flink-docs-stable/ops/state/state_backends.html#the-rocksdbstatebackend
>
>
>
> On Wed, Aug 7, 2019 at 1:25 PM wangl...@geekplus.com.cn <
> wangl...@geekplus.com.cn> wrote:
>
>>
>> In  my  code,  I just setStateBackend with a hdfs direcoty.
>>            env.setStateBackend(new
>> RocksDBStateBackend("hdfs://user/test/job"));
>>
>> Is there an embeded  RocksDB  service in the flink task?
>>
>> ------------------------------
>> wangl...@geekplus.com.cn
>>
>

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