AltraHD

High Performance Application Transparent Compression for Hadoop

Product Overview

AltraHD combines Exar’s state of the art software technology with its leading edge hardware compression accelerators to remove costly I/O bottlenecks and optimize the storage capacity for Hadoop applications. AltraHD integrates seamlessly into the Hadoop stack, and is able to transparently compress all files, including files that are stored using the HDFS file system as well as files stored locally as intermediate data outside of the HDFS file system. AltraHD is the only compression solution for Hadoop to offer all of the following key features:

  • Exar’s application transparent file system filter driver, which sits below the Hadoop Distributed File System (HDFS), automatically compresses/decompresses all files that are using HDFS. This enables transparent compression for all modules that interface to HDFS, including MapReduce, HBase, and Hive.
  • Exar’s family of compression codecs automatically compresses/decompresses intermediate data during the MapReduce phase of Hadoop processing.
  • Exar’s high performance PCIe-based compression acceleration card automatically accelerates all compression and decompression operations, maximizing throughput while offloading the host CPU. This optimizes workloads and delivers maximum system performance. A single card provides up to 5 GB/sec of compression/decompression throughput.

AltraHD is a plug and play solution that installs easily and quickly on each Hadoop datanode without requiring kernel recompilation or modification of user applications. Once installed, all file accesses are transparently accelerated and optimized.

 AltraHD Diagram

Key Benefits

Exar’s AltraHD addresses multiple issues with Hadoop clusters, delivering a multitude of benefits. The large amount of data processing that occurs with Hadoop can cause the system to become I/O bound, causing the CPU to wait for data to be retrieved from the storage or networking I/O subsystems and reducing system performance. In addition, the storage footprint can expand to a point where additional nodes are added to address the expanding storage requirements. AltraHD provides the following benefits to solve these problems:

  • System performance is maximized by reducing or eliminating costly I/O bottlenecks, delivering up to 2x performance increase.
  • The storage capacity is increased in proprtion to system data compressibility, resulting in an optimized storage subsystem.
  • The performance increase and storage optimization reduce the number of nodes required, as well as the associated power, cooling, and space requirements. This minimizes both CAPEX and OPEX, reducing the overall solution TCO.