| The name of the base system (platform): | Apache Hadoop |
| Developers: | Cloudera |
| Technology: | DBMS |
Cloudera CDH (Cloudera's Distribution including Apache Hadoop) 4.0
CDH 4 contains a new core of Hadoop 2.0 with a number of new features in the working, stable and supported release.
- The high level of availability of the HDFS file system (Hadoop Distributed File System) — its server of metadata NameNode is not any more a vulnerable link as it can be supported by spare equipment.
- Presence of a framework of MapReduce 2.0 which, strangely enough, allows others, than MapReduce, data processing algorithms, as well as an opportunity to write the MapReduce code in the languages other than Java.
- An opportunity to continue to use MapReduce 1.0 in combination with other Hadoop 2.0 components.
- Powers of level of the table and level of columns for HBase DBMS.
- 'Coprocessors' for HBase with the functionality similar to an insert of triggers in relational DBMS.
- More detailed distribution of tasks providing the best support of utility use of a cluster.
- The interface of RESTful web services to HDFS.
- Cover for Apache Pig and HBase based on the web browser.
- Numerous performance improvements in MapReduce, HDFS and Flume.
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