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Tongcheng Travel Technology Center
Tongcheng Travel Technology Center
Aug 14, 2018 · Big Data

Understanding HDFS Read and Write Mechanisms

This article explains how HDFS handles file reading and writing, detailing the roles of DFSClient, block selection, hedged reads, packet construction, checksum handling, and the interaction with NameNode and DataNode pipelines to ensure reliability and performance.

Big DataDFSClientHDFS
0 likes · 7 min read
Understanding HDFS Read and Write Mechanisms
Tencent Music Tech Team
Tencent Music Tech Team
May 5, 2017 · Mobile Development

Understanding iOS Core Audio: Definitions of Sample, Frame, and Packet

The article clarifies Apple’s Core Audio terminology—defining a sample as a single channel value, a frame as simultaneous samples, and a packet as one or more contiguous frames—explains why these terms are often confused across audio, networking, and codec contexts, and demonstrates the definitions with an MP3 parsing example.

Audio ProcessingCore Audioframe
0 likes · 11 min read
Understanding iOS Core Audio: Definitions of Sample, Frame, and Packet