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Traveling Saleman Problem 阅读全文
posted @ 2017-10-26 00:26
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https://hadoop.apache.org/docs/r2.7.2/hadoop-project-dist/hadoop-hdfs/HdfsDesign.html Introduction 【相对于POSIX，放宽要求】 The Hadoop Distributed File System 阅读全文
posted @ 2017-10-25 21:19
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for i in range(3, -2, -1): try: print(4 / i) except Exception as e: print(Exception) print(e) 阅读全文
posted @ 2017-10-25 14:36
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https://maprdocs.mapr.com/home/AdministratorGuide/ResourceAllocation-YARNContainer.html yarn.scheduler.minimum-allocation-mb yarn.scheduler.maximum-al 阅读全文
posted @ 2017-10-24 17:10
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Our goal is to foster an ecosystem of components and tools that relieve the burden of running applications in public and private clouds. https://kuber 阅读全文
posted @ 2017-10-24 16:15
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Dominant Resource Fairness: Fair Allocation of Multiple Resource Types 阅读全文
posted @ 2017-10-23 19:40
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RocksDB RocksDB is a high performance[1][2][3][4][5] embedded database for key-value data. It is a fork of LevelDB which was then optimized to exploit 阅读全文
posted @ 2017-10-23 14:34
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Large-scale Incremental Processing Using Distributed Transactions and Notifications 阅读全文
posted @ 2017-10-22 21:02
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posted @ 2017-10-21 14:26
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posted @ 2017-10-21 14:22
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分治 Divide Conquer 快速排序 | 菜鸟教程 https://www.runoob.com/w3cnote/quick-sort.html DivideConquerFillAHole func quickSort(input []int) []int { // DivideConqu 阅读全文
posted @ 2017-10-21 13:27
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https://github.com/google/snappy Introduction 【速度第一，压缩比适宜】 【favors speed over compression ratio】 Snappy is a compression/decompression library. It doe 阅读全文
posted @ 2017-10-21 12:25
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位图索引 翻译 搜索 复制 阅读全文
posted @ 2017-10-21 12:24
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posted @ 2017-10-21 11:14
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posted @ 2017-10-21 00:10
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def combination_2_n(l): n, r = len(l), [] for i in range(0, n, 1): s = i + 1 for ii in range(s, n, 1): r.append([l[i], l[ii]]) return r # l1, l2 = [... 阅读全文
posted @ 2017-10-20 16:47
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import psycopg2 import threading conn_fmac = psycopg2.connect(database='filter_useless_mac', user='user', password='password', host='192.168.168.168', port='5432') d... 阅读全文
posted @ 2017-10-20 10:02
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bagging bootstrap aggregation 装袋法 自助法聚集 阅读全文
posted @ 2017-10-20 00:22
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posted @ 2017-10-19 23:56
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posted @ 2017-10-19 19:27
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m*n matrix m*n=1000 f(A)=25 https://www.cs.princeton.edu/courses/archive/spring12/cos598C/svdchapter.pdf finding the best k -dimensional subspace with 阅读全文
posted @ 2017-10-19 18:51
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https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html Introduction The Hadoop Distributed File System (HDFS) is a distributed file system designed to 阅读全文
posted @ 2017-10-19 10:45
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hive.spark.client.rpc.sasl.mechanisms DIGEST-MD5 Name of the SASL mechanism to use for authentication. 阅读全文
posted @ 2017-10-19 09:42
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损失函数+惩罚函数 2阶导数 二阶导数_百度百科 https://baike.baidu.com/item/%E4%BA%8C%E9%98%B6%E5%AF%BC%E6%95%B0/1139067 second derivative 设 ，求 和 。 [6] 解：用导数定义求解： [6] 翻译 搜索 阅读全文
posted @ 2017-10-19 08:09
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posted @ 2017-10-19 01:33
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布隆过滤器 http://pages.cs.wisc.edu/~cao/papers/summary-cache/node8.html A Bloom filter is a method for representing a set A of n elements (also called key 阅读全文
posted @ 2017-10-18 21:47
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https://chenli.ics.uci.edu/files/icde2017-AsterixDB-Spatial-Comparison.pdf A Comparative Study of Log-Structured Merge-Tree-Based Spatial Indexes for 阅读全文
posted @ 2017-10-18 20:43
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7.13. nonlocal 语句 nonlocal_stmt ::= "nonlocal" identifier ("," identifier)* nonlocal 语句会使得所列出的名称指向之前在最近的包含作用域中绑定的除全局变量以外的变量。 这种功能很重要，因为绑定的默认行为是先搜索局部命名 阅读全文
posted @ 2017-10-18 20:05
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https://www.cs.umb.edu/~poneil/lsmtree.pdf 【Log-Structured Merge-Tree 】【结构化日志归并树】【要解决的问题】The Log-Structured Merge-Tree (LSM-Tree)https://www.cs.umb.ed 阅读全文
posted @ 2017-10-18 19:23
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Dynamic programming https://people.eecs.berkeley.edu/~vazirani/algorithms/chap6.pdf 阅读全文
posted @ 2017-10-18 18:55
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lk = ['oid', 'timestamp', 'signals', 'area', 'building', 'city', 'name', 'floor', 'industry', 'region', 'stress', 'longitude', 'latitud... 阅读全文
posted @ 2017-10-18 17:01
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posted @ 2017-10-17 19:18
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/etc/init.d/iptables stop systemctl stop firewalld.service [root@bigdata-server-01 myrestserver]# firewall-cmd --statenot running[root@bigdata-server- 阅读全文
posted @ 2017-10-17 19:17
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posted @ 2017-10-17 17:13
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【粗暴的HIVE-SQL】select xyz from abc where ty='sdk' and ret_code=0 and data_source_type=1 and dt between '20171013' and '20171016' limit 1200000;一个手机几天就在同 阅读全文
posted @ 2017-10-17 15:10
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posted @ 2017-10-17 08:41
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而非MySQL的trigger 阅读全文
posted @ 2017-10-17 08:37
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posted @ 2017-10-17 01:25
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