public static MemTableInfo deserialize(DataInputStream stream) throws IOException {
    MemTableInfo memTableInfo = new MemTableInfo();
    memTableInfo.memTableId = stream.readLong();
    memTableInfo.tsFilePath = ReadWriteIOUtils.readString(stream);
    memTableInfo.firstFileVersionId = stream.readLong();
    return memTableInfo;
  }
MemTableInfo records brief info of one memTable, including memTable id, tsFile path, and .wal
file version id of its first {@link WALEntry}.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/checkpoint/MemTableInfo.java