Hbase Hbase ValueFilter用于过滤值 package com.fatkun.filter.comparison; import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.HColumnDescriptor; import org.apache.hadoop.hbase.HTableDescriptor; import org.apache.hadoop.hbase.client.Get; import org.apache.hadoop.hbase.client.HBaseAdmin; import org.apache.hadoop.hbase.client.HTable; import org.apache.hadoop.hbase.client.Put; import org.apache.hadoop.hbase.client.Result; import org.apache.hadoop.hbase.client.ResultScanner; import…… Hbase Hbase QualifierFilter用于过滤qualifier，也就是一个列族里面dat…… Hbase FamilyFilter 用于过滤Family package com.fatkun.filter; import java.io.IOException; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.HBaseConfiguration; import org.apache.hadoop.hbase.HColumnDescriptor; import org.apache.hadoop.hbase.HTableDescriptor; import org.apache.hadoop.hbase.client.Get; import org.apache.hadoop.hbase.client.HBaseAdmin; import org.apache.hadoop.hbase.client.HTable; import org.apache.hadoop.hbase.client.Put; import org.apache.hadoop.hbase.client.Result; import org.apache.hadoop.hbase.client.ResultScanner; import org.apache.hadoop.hbase.client.Scan; import org.apache.hadoop.hbase.filter.BinaryComparator; import org.apache.hadoop.hbase.filter.CompareFilter; import…… Hbase RowFilter用于过滤row key Operator Description LESS 小于 LESS_OR_EQUAL 小于等于 EQUAL 等于 NOT_EQUAL 不等于 GREATER_OR_EQUAL 大于等于 GREATER 大于…… 未分类 长短信会分割成多条发送过来，每一条头部会带上总共有多少条，和这是第几条。（具体的细节…… 我的环境WIN7 64bit win7可以使用mklink做软链 Can also create symbolic link if you don't want to copy the files. (requires administrator privileges):…… 网页前端 db_debug – TRUE/FALSE (boolean) – Whether database errors should be displayed. 需要设置db_debug = false Yes, this is the mysql_error() wrapper. $this->db->_error_message(); And the mysql_errno wrapper is: $this->db->_error_number(); via: http://stackoverflow.com/questions/3234564/under-codeigniter-is-it-possible-to-see-mysql-error Hive 准备数据 语句 SELECT a.uid,a.name,b.age FROM logs a JOIN users b ON (a.uid=b.uid); 我们希望的结果是把users表join进来获取age…… Hive 准备数据 SELECT uid, sum(count) FROM logs group by uid; hive> select * from logs; a 苹果 5 a 橙子 3 a 苹果 2 b 烧鸡 1 hive> SELECT uid, sum(count) FROM logs group by uid;…… Hive 准备数据 语句 select count, count(distinct uid) from logs group by count; hive> select * from logs; OK a 苹果 3 a 橙子 3 a 烧鸡 1 b 烧鸡 3 hive> select count, count(distinct uid)……