HWM: a hybrid workload migration mechanism of metadata server cluster in data center

doi:10.1007/s11704-016-6036-y

	HWM: a hybrid workload migration mechanism of metadata server cluster in data center
	Liu, Jian 1,2; Dong, Huanqing 1; Zhang, Junwei 1; Liu, Zhenjun 1; Xu, Lu 1
	2017-02-01
发表期刊	FRONTIERS OF COMPUTER SCIENCE
ISSN	2095-2228
卷号	11 期号:1 页码:75-87
摘要	In data center, applications of big data analytics pose a big challenge to massive storage systems. It is significant to achieve high availability, high performance and high scalability for PB-scale or EB-scale storage systems. Metadata server (MDS) cluster architecture is one of the most effective solutions to meet the requirements of applications in data center. Workload migration can achieve load balance and energy saving of cluster systems. In this paper, a hybrid workload migration mechanism of MDS cluster is proposed and named as HWM. In HWM, workload of MDS is classified into two categories: metadata service and state service, and they can be migrated rapidly from a source MDS to a target MDS in different ways. Firstly, in metadata service migration, all the dirty metadata of one sub file system is flushed to a shared storage pool by the source MDS, and then is loaded by the target MDS. Secondly, in state service migration, all the states of that sub file system are migrated from source MDS to target MDS through network at file granularity, and then all of the related structures of these states are reconstructed in targetMDS. Thirdly, in the process of workload migration, instead of blocking client requests, the source MDS can decide which MDS will respond to each request according to the operation type and the migration stage. The proposed mechanismis implemented in the BlueWhaleMDS cluster. The performance measurements show that the HWM mechanism is efficient to migrate the workload of a MDS cluster system and provides low-latency access to metadata and states.
关键词	data center metadata server cluster hybrid workload migration metadata service state service low-latency access
DOI	10.1007/s11704-016-6036-y
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences[XDA06010401] ; Tianjin Science and Technology Program[15ZXDSGX00020]
WOS研究方向	Computer Science
WOS类目	Computer Science, Information Systems ; Computer Science, Software Engineering ; Computer Science, Theory & Methods
WOS记录号	WOS:000393581400008
出版者	HIGHER EDUCATION PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/7586
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Xu, Lu
作者单位	1.Chinese Acad Sci, Inst Comp Technol, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jian,Dong, Huanqing,Zhang, Junwei,et al. HWM: a hybrid workload migration mechanism of metadata server cluster in data center[J]. FRONTIERS OF COMPUTER SCIENCE,2017,11(1):75-87.
APA	Liu, Jian,Dong, Huanqing,Zhang, Junwei,Liu, Zhenjun,&Xu, Lu.(2017).HWM: a hybrid workload migration mechanism of metadata server cluster in data center.FRONTIERS OF COMPUTER SCIENCE,11(1),75-87.
MLA	Liu, Jian,et al."HWM: a hybrid workload migration mechanism of metadata server cluster in data center".FRONTIERS OF COMPUTER SCIENCE 11.1(2017):75-87.