with a java.util.Map interface
This week Axiomine released LargeCollections as open-source under the Apache License.
LargeCollections supports java.util.Map implementation which is backed by LevelDB. This allows your collections to grow very large as it does not use the JVM heap memory.
The primary purpose behind creating LargeCollections was to support java.util.Map. . . .
all the NextGen frameworks are scratching
MapReduce has an inherent and intrinsic limitation built into its architecture which impacts throughput. All new frameworks are trying to address this limitation in some form or the other.
MapReduce Limitations in Hadoop
Some of the characteristics of MapReduce which impose serious throughput constraints in practice are
Starting a MR Job . . .
A MapReduce program is composed of four program components
These components execute in a distributed environment in multiple JVM’s. The two JVMs important to a MapReduce developer are the JVM which executes a Mapper and that which executes the Reducer instance. Every component you develop will execute in . . .