HARDFS: Hardening HDFS with Selective and Lightweight Versioning
We harden the Hadoop Distributed File System (HDFS) against fail-silent (non fail-stop) behaviors that result from memory corruption and software bugs using a new approach: selective and lightweight versioning (SLEEVE). With this approach, actions performed by important subsystems of HDFS (e.g., namespace management) are checked by a second implementation of the subsystem that uses lightweight, approximate data structures. We show that HARDFS detects and recovers froma wide range of fail-silent behaviors caused by random bit flips, targeted corruptions, and real software bugs. In particular, HARDFS handles 90% of the fail-silentfaults that result from random memory corruption and correctly detects and recovers from 100% of 78 targeted corruptions and 5 real-world bugs. Moreover, it recovers orders of magnitude faster than full reboot by using micro-recovery. The extra protection in HARDFS incurs minimal performance and space overheads.
Authors:
Thanh Do, Tyler Harter, and Yingchao Liu, University of Wisconsin—Madison; Haryadi S. Gunawi, University of Chicago; Andrea C. Arpaci-Dusseau and Remzi H. Arpaci-Dusseau, University of Wisconsin—Madison
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@inproceedings {180731,
author = {Thanh Do and Tyler Harter and Yingchao Liu and Haryadi S. Gunawi and Andrea C. Arpaci-Dusseau and Remzi H. Arpaci-Dusseau},
title = {HARDFS: Hardening HDFS with Selective and Lightweight Versioning},
booktitle = {Presented as part of the 11th USENIX Conference on File and Storage Technologies (FAST 13)},
year = {2013},
isbn = {978-1-931971-99-7},
address = {San Jose, CA},
pages = {105--118},
url = {https://www.usenix.org/conference/fast13/technical-sessions/presentation/do},
publisher = {USENIX},
}
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Abstract:
We harden the Hadoop Distributed File System (HDFS) against fail-silent (non fail-stop) behaviors that result from memory corruption and software bugs using a new approach: selective and lightweight versioning (SLEEVE). With this approach, actions performed by important subsystems of HDFS (e.g., namespace management) are checked by a second implementation of the subsystem that uses lightweight, approximate data structures. We show that HARDFS detects and recovers froma wide range of fail-silent behaviors caused by random bit flips, targeted corruptions, and real software bugs. In particular, HARDFS handles 90% of the fail-silentfaults that result from random memory corruption and correctly detects and recovers from 100% of 78 targeted corruptions and 5 real-world bugs. Moreover, it recovers orders of magnitude faster than full reboot by using micro-recovery. The extra protection in HARDFS incurs minimal performance and space overheads.
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