![]() ![]() However, it introduces two prominent issues: data repair and data update. Evaluation shows that compared to HDFS-EC, NetEC significantly improves reconstruction rate by 2.7x-9.0x and eliminates CPU overheads, with low switch memory usage.read more read lessĪbstract: Erasure coding is the leading technique to achieve resilient redundancy in cloud storage systems. We implement NetEC on hardware programmable switches. ![]() NetEC addresses three key challenges: computation offloading of complex EC operations, rate synchronization of multiple downloading streams, and deep payload inspection/assembly. NetEC prevents multiplexing network I/O through on-switch downloading stream aggregation, thus significantly improving reconstruction speed. In this paper, we present NetEC, a novel in-network accelerating system that fully offloads EC to programmable switching ASICs. However, downloading streams of EC multiplex the available network I/O on the receiving end, leading to a substantially low data reconstruction speed. ![]() EC can reconstruct missing data by downloading parity data from survived machines. ![]() Abstract: In distributed storage systems, erasure coding (EC) is a crucial technology to enable high fault tolerance with lower storage overheads than data replication. ![]()
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