I am trying to use column families in RocksDB through java binding.
RocksDB.loadLibrary();
String threat = "threat_data";
String ipRange = "ip_range";
options = new DBOptions();
options.setCreateIfMissing(true);
options.setCreateMissingColumnFamilies(true);
ColumnFamilyOptions cfOpts = new ColumnFamilyOptions().optimizeUniversalStyleCompaction();
List cfDescriptors = Arrays.asList(
new ColumnFamilyDescriptor(RocksDB.DEFAULT_COLUMN_FAMILY, cfOpts),
new ColumnFamilyDescriptor(threat.getBytes(), cfOpts),
new ColumnFamilyDescriptor(ipRange.getBytes(),cfOpts)
);
List<ColumnFamilyHandle> cfHandles = new ArrayList<>();
rocksDb = RocksDB.open(options, new File("/tmp/benchmark", "rockdb-threat-detection.db").getAbsolutePath(),cfDescriptors,cfHandles);
cfHandleThreat = (ColumnFamilyHandle) ((List) cfHandles.stream().filter(x -> {
try {
return (new String(x.getName())).equals(threat);
} catch (RocksDBException e) {
e.printStackTrace();
}
return false;
}).collect(Collectors.toList())).get(0);
cfHandleIp = (ColumnFamilyHandle) ((List) cfHandles.stream().filter(x -> {
try {
return (new String(x.getName())).equals(ipRange);
} catch (RocksDBException e) {
e.printStackTrace();
}
return false;
}).collect(Collectors.toList())).get(0);
I am creating 2 column families threat_data and ip_range. But if trying to read from using get() function, the performance hits low.
mapThreat.get(ipToLong("157.49.194.173"))
The performance between using columnfamilies and not using them changes drastically. Is there anything I am doing wrong or How should I improve performance?
