MapReduce has undergone a complete overhaul in hadoop-0.23 and we now have, what we call, MapReduce 2.0 (MRv2) or YARN.
The fundamental idea of MRv2 is to split up the two major functionalities of th...
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其他好文 时间:
2014-11-04 00:15:00
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209
ubuntu上跑python连接pg,报错 ImportError: No module named psycopg2
root@pgproxy1:~# python /home/zxw/PGWriterTest_m.py
Traceback (most recent call last):
File "/home/zxw/PGWriterTest_m.py", line 4...
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编程语言 时间:
2014-11-03 19:29:25
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2370
Spring Batch学习_ItemReaders and ItemWriters All batch processing can be described in its most simple form as reading in large amounts of data, performing some type of calculation or transformation...
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编程语言 时间:
2014-11-03 14:47:54
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407
In most cases you will need root permission to be able to capture packets on an interface. Using tcpdump (with root) to capture the packets and saving...
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其他好文 时间:
2014-11-03 14:29:58
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355
================Cycling Roads================DescriptionWhen Vova was in Shenzhen, he rented a bike and spent most of the time cycling around the city...
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其他好文 时间:
2014-11-03 12:57:53
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题目链接题意 :给你一个n,让你找出小于等于n的数中因子个数最多的那个数,并且输出因子个数,如果有多个答案,输出数最小的那个思路 : 官方题解 :(1)此题最容易想到的是穷举,但是肯定超时。(2)我们可以知道,计算约数的个数和质因数分解有着很大的联系: 若Q的质因数分解为:Q=p1^k1*p2^k2...
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其他好文 时间:
2014-11-03 12:50:20
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OverviewThis guide demonstrates how to optimize Magento performance. Most optimizations will work with any version of Magento. Those intended for spec...
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其他好文 时间:
2014-11-02 23:53:51
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python 3.x 不再提供raw_input(), 改为使用input(), print 改为 print(),print 无括号形式不能再使用.>>> raw_input('input name:');Traceback (most recent call last): File "", li...
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编程语言 时间:
2014-11-02 17:49:06
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217
In this Document
Symptoms
Changes
Cause
Solution
References
APPLIES TO:
Oracle Applications Technology Stack -...
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其他好文 时间:
2014-11-01 16:25:02
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Given a non-negative number represented as an array of digits, plus one to the number.
The digits are stored such that the most significant digit is at the head of the list.
一开始我误解了题目的意思,以为是新建一个...
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其他好文 时间:
2014-10-31 22:16:05
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253