所述播放方法是利用全局索引和分片索引定位数据包，进行播放操作。
The method for playing utilizes the global index and a slicing index to position the data packet so as to carry out the operation of playing.
为提供容错支持，基于严格一致多副本索引机制，实现数据文件的并行分片传输；
To achieve fault tolerant, the uniform replica index mechanism is adopted as well as parallel stripped transfer.
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