hbase

If any one else is interested in using HBase , let us know !

如果还有其他公司对使用HBase感兴趣，就告诉我们吧！

In other words , HBase supports a dynamic schema model .

换句话说，HBase支持一个动态模式模型。

Without it , HBase can lose data on server crash .

没有这个操作，HBase可能会在服务器崩溃时丢失数据。

You can use HBase to answer more difficult questions than that discussed in this article .

您可以使用HBase解决比本文中讨论的问题更困难的问题。

Although HBase still needs performance improvement , it shows real promise of becoming a mainstream solution .

尽管HBase的性能仍需改善，但它的确展示了成为主流解决方案的前景。

Facebook is testing the use of HBase for continuously updating dimension data in their warehouse .

Facebook正在尝试将HBase用于数据仓库里的持续更新的维数据。

Although we had a split early on , we 're still friends with the HBase team .

虽然我们很早就与HBase项目分开，但两个团队仍然是很好的朋友。

HBase and Bigtable promote a new way of thinking about the data-processing pipeline .

HBase和Bigtable提出了一种关于数据处理管道的新的思维方式。

Instead of traditional file processing , HBase makes database tables the input and output form for MapReduce processing .

代替传统的文件处理，HBase使数据库将MapReduce处理的输入和输出格式列表。

Running table scans on the HBase data was five times slower than native Hive queries .

在HBase运行表扫描比执行原生的Hive查询要慢五倍以上。

They are looking to optimize this integration , to take advantage of performance optimizations available in the latest HBase .

他们尝试对这一集成进行优化，以利用最新的HBase性能优化所带来的好处。

In the absence of table joins , de-normalization is often used in HBase to keep related information in one table .

在缺乏表连接时，HBase通常使用去规范化（de-normalization）来将相关信息保存在一个表中。

HBase is a key value store akin to BigTable which stores data in Hadoop 's DFS file system .

HBase是类似BigTable的键值存储模型，将数据存储于Hadoop的DFS文件系统。

HBase data is modeled as a multidimensional map in which values ( the table cells ) are indexed by four keys

HBase数据被建模为多维映射，其中值（表单元）通过4个键索引

It is built using Apache Hadoop for hourly index updates and Apache HBase to provide random access to item information .

它使用ApacheHadoop来支持每小时进行的索引更新，使用ApacheHBase对随机存取信息提供支持。

Note : At the time of this writing , the latest release of HBase was V0.19.3 .

注意：在撰写本文时，HBase的最新版本是V0.19.3。

Hbase is built on top of Hadoop and is designed for low-latency and data mutability .

HBase是建立在Hadoop的之上的，并且具有低延时和数据可变性的设计。

However , HBase does support efficient random accesses , so it can be used for some of the transactional elements of your business .

但是，HBase支持高效随机存取，因此它可以被用于你的业务的一些事务性元素。

HBase is a scalable , distributed , column-oriented dynamic-schema database for structured data .

HBase是一个针对结构化数据的可伸缩、分布式和面向列的动态模式数据库。

HBase is a subproject of Hadoop with its home at Apache .

HBase是Apache的Hadoop项目的子项目。

HBase is is an open-source , distributed , column-oriented store also modeled after BigTable .

HBase是一个开源的、分布式的、仿效BigTable的面向列存储系统。

Even though HBase is typically labeled as a database-it is not , in the sense that this term is used in enterprise applications .

即便HBase常常被称为数据库，可是该数据库也不是给企业应用用的。

Empty cells are not stored in HBase ; reading an empty cell is similar to extracting from a map a value by a nonexistent key .

空单元不存储在HBase中，读取空单元类似于根据不存在的键从映射提取值。

Perform a POST request for each insertion and omit the timestamps because HBase assigns default timestamps .

对每个插入执行POST请求，省略时间戳，因为HBase分配默认时间戳。

An HBase table schema defines the column families , but applications can create new members on the fly when you insert a row into the table .

一个HBase表模式定义多个列族，但当您向表中插入一行时，应用程序能够在运行时创建新成员。

HBase is a database representation over Hadoop 's HDFS , permitting MapReduce to operate on database tables over simple files .

HBase是数据库在Hadoop的HDFS上的表现，在简单文件上执行MapReduce以操作数据库表。

Just as Bigtable leverages the distributed data storage provided by the Google File System , HBase provides Bigtable-like capabilities on top of Hadoop .

就像Bigtable利用了Googl文件系统（FileSystem）所提供的分布式数据存储一样，HBase在Hadoop之上提供了类似于Bigtable的能力。

Any one who has mountains of structured or semi-structured data and who is currently up against the limits with their RDBMS should come take a look at HBase .

任何拥有大量的结构化或半结构化数据、而且正受限于关系数据库管理系统（RDBMS）的用户都可以看看HBase。

HBase is an open-source , distributed , column-oriented store modeled after the Google paper ," Bigtable : A Distributed Storage System for Structured Data " by Chang et al .

HBase是一个开源的、分布式的、面向列的存储系统，该技术来源于Changetal所撰写的Google论文“Bigtable：一个结构化数据的分布式存储系统”。