Data node fencing in a distributed file system
US9753954B2 · kind B2 · utility
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56References
9Claims
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Key dates
| Filing date | Sep 11, 2013 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Mar 3, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0836
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for data node fencing in a distributed file system to prevent data inconsistencies and corruptions are disclosed. An embodiment includes implementing a protocol whereby data nodes detect a failover and determine an active name node based on transaction identifiers associated with transaction requests. The data nodes also provide to the active name node block location information and an acknowledgment. The embodiment further includes a protocol whereby a name node refrains from issuing invalidation requests to the data nodes until the name node receives acknowledgments from all data nodes that are functional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.