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From James Teng <tenglinx...@outlook.com>
Subject Why hbase can quickly position columns for certain key?
Date Thu, 02 Jul 2015 10:22:21 GMT
Hi all,i am wondering whether someone could explain this to me, although i have read some materials
for hbase, but still have some puzzles on this.
Hbase store files are stored on hdfs, which lacks random access & writes, although hbase
has some mechanisms to filter data on store files level, but still has to search wanted column
data based on the left store files. when get to this granularity, how can it quick position
the columns, indexing through the files which means having to read the whole data block on
hdfs, and leverage the refined keyvalue format to indexing data? isn't it on low performance
to read the whole store file?
thanks!james. 		 	   		  
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