HBase的TTL介绍
1. 定义 TTL(Time to Live) 用于限定数据的超时时间。 2.原理 以Column Family的TTL为例介绍, hbase(main):001:0> desc 'wxy:test' Table wxy:test is ENABLED wxy:test COLUMN FAMILIES DESCRIPTION {NAME => 'cf', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', VERSIONS = > '2', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL => 'FOREVER', KEEP_DELETED_CELLS => 'FALSE', BLOC KSIZE => '65536', IN_MEMORY => 'false', BLOCKCACHE => 'true'} {NAME => 'f1', DATA_BLOCK_ENCODING => 'NONE', BLOOMFILTER => 'ROW', REPLICATION_SCOPE => '0', COMPRESSIO N => 'NONE', VERSIONS => '5', TTL => 'FOREVER', MIN