release: v0.2.4 二级索引 + MVCC + BloomFilter + WAL全同步 + 内存预算

src/engine/aria/index/sstable_builder.ts

@@ -92,8 +92,12 @@ export class SSTableBuilder {
 
     const indexBlockSize = this.estimateIndexBlockSize(indexEntries);
 
-    // 写入到 buffer
-    const finalSize = totalSize + indexBlockSize + SSTABLE_FOOTER_SIZE;
+    // 序列化 bloom filter 以获取其大小
+    const bloomData = bloomFilter.serialize();
+    const bloomSize = bloomData.byteLength;
+
+    // 写入到 buffer（包含 bloom block）
+    const finalSize = totalSize + indexBlockSize + bloomSize + SSTABLE_FOOTER_SIZE;
     const buf = new ArrayBuffer(finalSize);
     const view = new DataView(buf);
 
@@ -108,12 +112,17 @@ export class SSTableBuilder {
     const indexOffset = offset;
     offset = this.writeIndexBlock(view, offset, indexEntries);
 
+    // ---- Bloom Filter Block ----
+    const bloomOffset = offset;
+    new Uint8Array(view.buffer).set(bloomData, offset);
+    offset += bloomSize;
+
     // ---- Footer ----
     const footerOffset = offset;
     view.setUint32(footerOffset, indexOffset, false);      // index_offset
     view.setUint32(footerOffset + 4, indexBlockSize, false); // index_size
-    view.setUint32(footerOffset + 8, 0, false);  // bloom_offset (embedded in footer)
-    view.setUint32(footerOffset + 12, 0, false); // bloom_size
+    view.setUint32(footerOffset + 8, bloomOffset, false);   // bloom_offset
+    view.setUint32(footerOffset + 12, bloomSize, false);     // bloom_size
     view.setUint32(footerOffset + 16, bloomFilter.getHashCount(), false);
     view.setUint32(footerOffset + 20, this.entries.length, false);
     view.setUint32(footerOffset + 24, SSTABLE_MAGIC, false);