Question about RocksDBStateBackend Compaction Filter state cleanup

[LakeShen]

Hi community ,

I see the flink RocksDBStateBackend state cleanup,now the code like this :

StateTtlConfig ttlConfig = StateTtlConfig
    .newBuilder(Time.seconds(1))
    .cleanupInRocksdbCompactFilter(1000)
    .build();



> The default background cleanup for RocksDB backend queries the current
> timestamp each time 1000 entries have been processed.


What's the meaning of  1000 entries? 1000 different key ?

Thanks to your reply.

Best regards,
LakeShen