Facebook的Realtime Hadoop及其应用

在今年的SIGMOD‘11上,Facebook又发了一篇新paper(点此下载),讲述了它们在提高Hadoop实时性上的工作及其应用。简单来讲,他们的项目需求主要有:

1. Elasticity(伸缩性)
2. High write throughput(高写吞吐量)
3. Efficient and low-latency strong consistency semantics within a data center(单个data center内高性能、低延迟的强一致性)
4. Efficient random reads from disk(disk的高性能随机读)
5. High Availability and Disaster Recovery(高可靠性、灾后恢复能力)
6. Fault Isolation(错误隔离)
7. Atomic read-modify-write primitives(read-modify-write原子操作)
8. Range Scans(范围扫描)

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