CHEATSHEET January 20, 2022

hbase

Words count 393 Reading time 1 mins. Read count 0

create ‘UserActiveDate’, {NAME=>’lastActive’, VERSIONS=>3, MIN_VERSIONS => 1, TTL=>15552000, COMPRESSION => ‘SNAPPY’}, {NUMREGIONS => 20, SPLITALGO => ‘DecimalStringSplit’}
– 保留最新一个状态. TTL设置后即使有MIN_VERSIONS,spark查询仍然为空 ==> 数据少是没落盘文件导致 未flush

hbase org.apache.hadoop.hbase.mapreduce.RowCounter

0%