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Python Big Data App IntroductionIntroduction: At present, the industry mainstream storage and analysis platform for the Hadoop-based open-source ecosystem, mapreduce as a data set of Hadoop parallel operation model, in addition to provide Java to write MapReduce task, but also compatible with the streaming way, You can
The TOPK problem, which is finding the largest number of K, is very common, such as finding the hottest 10 keywords from 10 million search records.Method One:First, then the number of the first k is truncated.Time complexity: O (N*logn) +o (k) =o (N*LOGN).Method Two:Minimum heap.Maintain the smallest heap with a capacity of K. According to the minimum heap nature, the heap top must be the smallest, if smaller than the heap top, then the direct pass, if greater than the heap top, then replace the
In daily life, we know that search engines such as Baidu, 360, Sogou, Google, and so on, search is the big data in the field of common needs. Splunk and elk are leaders in the field of non-open source and open source, respectively. This article uses very few Python code to implement a basic data search function, trying
format for writing only. Overwrite the file if it already exists. If the file does not exist, create a new file.w+ open a file for read-write. Overwrite the file if it already exists. If the file does not exist, create a new file.wb+ opens a file in binary format for read-write. Overwrite the file if it already exists. If the file does not exist, create a new file.A opens a file for appending. If the file already exists, the file pointer will be placed at the end of the file. In other words, th
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