add print of rocksdb3

source/storage/storage-rocksdb/src/main/java/com/jd/blockchain/storage/service/impl/rocksdb/RocksDBConnectionFactory.java

@@ -120,27 +120,32 @@ public class RocksDBConnectionFactory implements DbConnectionFactory {
 		System.out.printf("optionMaxBackgroundCompactions = %s \r\n", optionMaxBackgroundCompactions);
 		System.out.printf("optionMaxBackgroundFlushes = %s \r\n", optionMaxBackgroundFlushes);
 
-        Cache cache = new LRUCache(512 * SizeUnit.MB);
-
-        final BlockBasedTableConfig tableOptions = new BlockBasedTableConfig()
-                .setBlockCache(cache)
-                .setCacheIndexAndFilterBlocks(true)
-                ;
-
-        Options options = new Options()
-                // 最多占用256 * 7 + 512 = 2.25G内存
-                .setWriteBufferSize(256 * SizeUnit.MB)
-                .setMaxWriteBufferNumber(7)
-                .setMinWriteBufferNumberToMerge(2)
-                .setMaxOpenFiles(-1)
-                .setAllowConcurrentMemtableWrite(true)
-                .setCreateIfMissing(true)
-                .setTableFormatConfig(tableOptions)
-                .setMaxBackgroundCompactions(5)
-                .setMaxBackgroundFlushes(4)
-                .setMemTableConfig(new SkipListMemTableConfig())
-                ;
-        return options;
+		Cache cache = new LRUCache(512 * SizeUnit.MB, 64, false);
+
+		final BlockBasedTableConfig tableOptions = new BlockBasedTableConfig()
+				.setBlockCache(cache)
+				.setMetadataBlockSize(4096)
+				.setCacheIndexAndFilterBlocks(true) // 设置索引和布隆过滤器使用Block Cache内存
+				.setCacheIndexAndFilterBlocksWithHighPriority(true)
+				.setIndexType(IndexType.kTwoLevelIndexSearch) // 设置两级索引，控制索引占用内存
+				.setPinTopLevelIndexAndFilter(false)
+				.setBlockSize(4096)
+				.setFilterPolicy(null) // 不设置布隆过滤器
+				;
+
+		Options options = new Options()
+				// 最多占用256 * 6 + 512 = 2G内存
+				.setWriteBufferSize(256 * SizeUnit.MB)
+				.setMaxWriteBufferNumber(6)
+				.setMinWriteBufferNumberToMerge(2)
+				.setMaxOpenFiles(100) // 控制最大打开文件数量，防止内存持续增加
+				.setAllowConcurrentMemtableWrite(true) //允许并行Memtable写入
+				.setCreateIfMissing(true)
+				.setTableFormatConfig(tableOptions)
+				.setMaxBackgroundCompactions(5)
+				.setMaxBackgroundFlushes(4)
+				;
+		return options;
 	}
 
 	/**