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1、去除无用代码
OPT_PQ, HA_ERR_END_OF_RANGES
2、修改重复定义
PQ_MEMORY_USED_BUCKET
3、消除重复代码
获取并行查询总内存
4、代码结构调整
5、修改格式不规范代码
6、去除多余的头文件
7、问题修改
convert_mq_data_to_record函数中保存可变字段的长度的字节数为1字节
8、逻辑优化
binary_heap构造时入参m_capacity可能为负。初始化时增加负值判断
fixes:#137