RDMA-based Apache Hadoop 2.x (RDMA-Hadoop-2.x)
RDMA for Apache Hadoop 2.x is a high-performance design of Hadoop over RDMA-enabled Interconnects. This version of RDMA for Apache Hadoop 2.x 1.0.0 is based on Apache Hadoop 2.7.1 and is compliant with Apache Hadoop 2.7.1, Hortonworks Data Platform (HDP) 184.108.40.206, and Cloudera Distribution of Hadoop (CDH) 5.6.0 APIs and applications.
The figure below presents a high-level architecture of RDMA for Apache Hadoop 2.x. In this package, many different modes have been included that can be enabled/disabled to obtain performance benefits for different kinds of applications in different Hadoop environments. This package can be configured to run MapReduce jobs on top of HDFS as well as Lustre.
Following are the different modes that are included in our package.
- HHH: Heterogeneous storage devices with hybrid replication schemes are supported in this mode of operation to have better fault-tolerance as well as performance. This mode is enabled by default in the package.
- HHH-M: A high-performance in-memory based setup has been introduced in this package that can be utilized to perform all I/O operations in-memory and obtain as much performance benefit as possible.
- HHH-L: With parallel file systems integrated, HHH-L mode can take advantage of the Lustre available in the cluster.
- HHH-L-BB: HHH-L-BB mode deploys a Memcached-based burst buffer system to reduce the bandwidth bottleneck of shared file system access. The burst buffer design is hosted by Memcached servers, each of which has a local SSD.
- MapReduce over Lustre, with/without local disks: Besides, HDFS based solutions, this package also provides support to run MapReduce jobs on top of Lustre alone. Here, two different modes are introduced: with local disks and without local disks.
- Running with Slurm and PBS: Supports deploying RDMA for Apache Hadoop 2.x with Slurm and PBS in different running modes (HHH, HHH-M, HHH-L, and MapReduce over Lustre).