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Version 2 (modified by jazz, 16 years ago) (diff)
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2010-10-20

Hadoop

http://github.com/tomwhite/hadoop-book/ - Tom White "Hadoop: The Definitive Guide" 的範例程式

NoHadoop: Big Data Requires Not Only Hadoop
- 這篇文章講了很多 Hadoop 替代方案，針對許多不同的應用情境：
  - CloudScale - 即時資料倉儲需求（realtime data-wharehouse requirements）
    - CloudScale 稱之為 Redoop - 出自 Hadoop and Realtime Cloud Computing(2010-10-15)
  - MPI , BSP - 若有高速運算需求（supercomputing requirements）
  - Pregel (架構,沒有code,Google) - 若要作大量圖形演算法運算（graph computing requirements）
  - Percolator (架構,沒有code,Google)- 若必須針對大量資料作持續的更新（incrementally update the analytics on a massive data set continuously）

看樣子今年 Hadoop World NYC 發生了很多事情。
第一： Oracle 與 Hadoop 整合 - 一個新的專案叫做 OraOop
- Helping Oracle Get Along with Hadoop
第二： Membase 與 Hadoop 整合 - 可以讓 Hadoop 更即時（Real-Time） ?? 跟我最初想的方法很像(Ex. 結合 ActiveMQ)，想想用 Memcache 也是不錯的選擇啦~搞不好可以用 memcache 來作參數傳遞跟公用變數（Global Variable）。
- Membase-Cloudera Integration Joins Leading Hadoop Distribution and Real-Time NoSQL Database
- Membase and Cloudera Integration
- Bi-directional connection for Membase and Cloudera Hadoop
```
The first consists of a Membase NodeCode module that streams data from Membase to CDH in real-time, 
while the second consists of a Sqoop-derived batch loader utility that allows for the loading of data 
to and from Membase and CDH.
```

第三： Twitter 與 Hadoop - 推特用 Hadoop 來儲存 Tweets

Hadoop is a "Big part of Twitter’s ecosystem"

For something like Hadoop, the presence of a robust, public tool really helps 
to build a prosperous ecosystem.

Twitter solves its data formatting challenge

While primary copies of user Tweets are kept in MySQL and Cassandra databases, 
the company is also building a second data repository, running on Hadoop, that 
can be used for analytics and applications.

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