Hi Yun,
Thanks you for your clarification.
Thanks,
Kaka Chen
Yun Tang <myas...@live.com> 于2019年7月5日周五 下午3:34写道：
> Hi kaka
>
> You're correct, these comments are not correct for RocksDBMapState now,
> will correct it with a hotfix.
>
> Best
> Yun Tang
> ________________________________
> From: kaka chen <kaka11.c...@gmail.com>
> Sent: Friday, July 5, 2019 15:05
> To: dev@flink.apache.org
> Subject: A question about RocksDBListState and RocksDBMapState.
>
> Hi All,
>
> I noticed RocksDBListState and RocksDBMapState have both the following
> comments:
>
> * <p>{@link RocksDBStateBackend} must ensure that we set the
> * {@link org.rocksdb.StringAppendOperator} on the column family that
> we use for our state since
> * we use the {@code merge()} call.
>
>
> However, from the source code, I found only RocksDBListState use
> rocksdb::merge() function which used StringAppendTestOperator in rocksdb to
> merge the list entries when compaction or getting key. I don't know why
> RocksDBMapState is related with these comments, could someone to explain
> it, thanks.
>
> Thanks,
> Kaka
>
