TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
LDBAS: Location-aware Data Block Allocation Strategy for HDFS-based Applications in the Cloud |
| 영문제목(English Title) |
LDBAS: Location-aware Data Block Allocation Strategy for HDFS-based Applications in the Cloud |
| 저자(Author) |
Hua Xu
Weiqing Liu
Guansheng Shu
Jing Li
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| 원문수록처(Citation) |
VOL 12 NO. 01 PP. 0204 ~ 0226 (2018. 01) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Big data processing applications have been migrated into cloud gradually, due to the advantages of cloud computing. Hadoop Distributed File System (HDFS) is one of the fundamental support systems for big data processing on MapReduce-like frameworks, such as Hadoop and Spark. Since HDFS is not aware of the co-location of virtual machines in the cloud, the default scheme of block allocation in HDFS does not fit well in the cloud environments behaving in two aspects: data reliability loss and performance degradation. In this paper, we present a novel location-aware data block allocation strategy (LDBAS). LDBAS jointly optimizes data reliability and performance for upper-layer applications by allocating data blocks according to the locations and different processing capacities of virtual nodes in the cloud. We apply LDBAS to two stages of data allocation of HDFS in the cloud (the initial data allocation and data recovery), and design the corresponding algorithms. Finally, we implement LDBAS into an actual Hadoop cluster and evaluate the performance with the benchmark suite BigDataBench. The experimental results show that LDBAS can guarantee the designed data reliability while reducing the job execution time of the I/O-intensive applications in Hadoop by 8.9% on average and up to 11.2% compared with the original Hadoop in the cloud.
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| 키워드(Keyword) |
Hadoop
HDFS
big data processing
data block allocation
cloud
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| 파일첨부 |
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