hbase 的regioninfo，
无意间看了下接了个图：这个一个scores表的结构，这个表有两个faminly:course,grade
下面再来看regrioninfo的信息吧：
2147483647
BLOCKCACHE
2147483647
BLOCKCACHE
REGION => {NAME => 'scores,,1353524491099.c5c11a33d955ef1469708e17946c121b.', STARTKEY => '', ENDKEY => '', ENCODED => c5c11a33d955ef1469708e17946c121b,
TABLE => {{NAME => 'scores', FAMILIES => [{NAME => 'course', BLOOMFILTER => 'NONE', REPLICATION_SCOPE => '0', VERSIONS => '3', COMPRESSION => 'NONE', TTL => '2147483647', BLOCKSIZE => '65536', IN_MEMORY =>
'false', BLOCKCACHE => 'true'}, {NAME => 'grade',
BLOOMFILTER => 'NONE', REPLICATION_SCOPE => '0', VERSIONS => '3', COMPRESSION => 'NONE', TTL => '2147483647', BLOCKSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'}]}}
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