Improvising Data Locality and Availability in Hbase Ecosystem
Journal Title: IOSR Journals (IOSR Journal of Computer Engineering) - Year 2014, Vol 16, Issue 2
Abstract
Abstract: In this paper, we try to represent the importance of data locality with the HBase architecture. HBase has a dynamic master slave architecture but the emphasis on data locality, i.e. getting the logic or processing near to the data is the major phenomenon followed for better and efficient performance. Data Locality is valid as every region server has the information of every data blocks located in respective regions but what if the region server crashes or the region server is restarted or the regions are randomly re-distributed with all the region servers due to load balancing, then data locality is completely lost during that time. Performance is majorly affected if there is misconfiguration of data locality in the cluster. The HMaster uses [4] .META table to get information about the region server that has its specified regions containing rows. Keeping an eye on this disadvantages and challenges, we propose to improvise data locality by allocating maximum regions to that region server which had the maximum data blocks of that region in it. An algorithm is proposed based on HRegion locality index for deciding the criteria of allocating the regions to region servers for maintaining data locality.
Authors and Affiliations
Shalini Sharma , Satyajit Padhy
Keywords
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