if (cf_def.isSetCompaction_strategy())
newCFMD.compactionStrategyClass = createCompactionSrategy(cf_def.compaction_strategy);
if (cf_def.isSetCompaction_strategy_options())
newCFMD.compactionStrategyOptions(new HashMap<String, String>(cf_def.compaction_strategy_options));
CompressionParameters cp = CompressionParameters.create(cf_def.compression_options);
return newCFMD.comment(cf_def.comment)
.rowCacheSize(cf_def.row_cache_size)
.keyCacheSize(cf_def.key_cache_size)
.readRepairChance(cf_def.read_repair_chance)