Hadoop serialization and Writable Interface (i) introduced the Hadoop serialization, the Hadoop writable interface and how to customize your own writable class, and in this article we continue to introduce the Hadoop writable class, This time we are concerned about the length of bytes occupied after the writable instance was serialized, and the composition of the sequence of bytes after the writable instance was serialized. Why to consider the byte length of the writable class large data program ...
1. Boxing, unpacking or aliases many of the introduction of C #. NET learning experience books on the introduction of the int-> Int32 is a boxing process, the reverse is the process of unpacking. This is true of many other variable types, such as short <-> int16,long <->int64. For the average programmer, it is not necessary to understand this process, because these boxes and unboxing actions can be automatically completed, do not need to write code to intervene. But we need to remember that ...
We find that services that apply Windows Azure tables will be affected when partitionkey or Rowkey contain a "%" character. APIs affected by this include: Get entity, Merge entity, Update entity, Delete entity, insert or Merge entity, and API for insert or replace entity. If any of the above APIs is invoked with its par ...
Pdftextstream is a PDF text and meta data extraction software for Java,python and http://www.aliyun.com/zixun/aggregation/13480.html ">.net. It supports all PDF document spec versions (including V1.7, using Acrobat 8 and 9), Text extraction encoding uses Double-byte character sets (including Chinese, Japanese, and Korean), 40-bit decryption and 128-bit encrypted files, PDF files (...).
According to the CBRC statistics, in 2011, China's rural commercial banks, rural credit cooperatives, villages and towns bank more than 2000, but for a long time, these small and medium-sized banks have been with the internet has maintained a cautious boundary relationship. 2012 China's network retail market transaction scale reached 1.3 trillion, the rapid development of e-commerce touched the traditional small and medium-sized banking business transformation of the nerves, but the traditional it architecture characteristics can not support the financial business after the internet, "phenomenon-class" technical support challenges, So the financial institution's IT technology structure transformation becomes its can embrace the Internet, the business transformation rises ...
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