RocksDB is orginally implemented in C. To use it in Java, Flink uses a RocksDB jar with JNI techniques.
Whenever a Flink job starts, the RocksDB libraries will be loaded. The file named librocksdb*.so will be extracted from the RocksDB jar and will be put in the tmp directory. So I think you have run Flink jobs many many times in the three days to get those 451 files. I don’t think the numerous files are a big problem because they are located in the tmp directory and they can be automatically cleaned by OS. > 在 2016年11月7日，上午8:24，Dominique Rondé <dominique.ro...@allsecur.de> 写道： > > Hi @ll, > > we just change the backend from filesystem to RocksDB. Since that time (3 > Days) we got 451 files with 1.8 GB stored in the tmp-Directory. All files are > named librocksdb*.so > > Did we something wrong or is it a Bug? > > Greets > Dominique > > > > Von meinem Samsung Gerät gesendet.
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