This is the second of the Hadoop Best Practice series, and the last one is "10 best practices for Hadoop administrators." Mapruduce development is slightly more complicated for most programmers, and running a wordcount (the Hello Word program in Hadoop) is not only familiar with the Mapruduce model, but also the Linux commands (though there are Cygwin, But it's still a hassle to run mapruduce under windows ...
Currently used in Hadoop more than four compression formats lzo, gzip, snappy, bzip2, the author based on practical experience to introduce the advantages and disadvantages of these four compression formats and application scenarios, so that we in practice according to the actual situation of choice Different compression formats. 1 gzip compression Advantages: compression ratio is relatively high, and the compression / decompression speed is faster; hadoop itself support, in the application of gzip format file processing and direct processing of the same text; have hadoop native library; most of the li ...
Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnosis Taobao guest Cloud host Technology Hall recently several colleagues opened personal blog, but complained that because of the purchase of virtual space, So the personal blog site is very slow to open. For this phenomenon, according to the general situation, a Web site access to open speed and slow, are all looking at this site to use the space configuration, if this space host configuration is good, that ...
"Editor's note" in the famous tweet debate: MicroServices vs. Monolithic, we shared the debate on the microservices of Netflix, Thougtworks and Etsy engineers. After watching the whole debate, perhaps a large majority of people will agree with the service-oriented architecture. In fact, however, MicroServices's implementation is not simple. So how do you build an efficient service-oriented architecture? Here we might as well look to mixrad ...
For some components, Hadoop provides its own local implementation, given the performance problems and the lack of some Java class libraries. These components are stored in a separate dynamically linked library of Hadoop. This library is called libhadoop.so on the Nix platform. This article mainly describes how to use the local library and how to build the local library. Component Hadoop now has the following compression codecs local components: Zlib gzip Lzo in the above components, LZO and gzip compression ...
HBase is a distributed, column-oriented, open source database based on Google's article "Bigtable: A Distributed Storage System for Structured Data" by Fay Chang. Just as Bigtable takes advantage of the distributed data storage provided by Google's File System, HBase provides Bigtable-like capabilities over Hadoop. HBase Implements Bigtable Papers on Columns ...
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