DESCRIPTION

 'dimensoft:user', //namespace:tableName

    {

        NAME => 'info', //列族

        DATA_BLOCK_ENCODING => 'NONE', //数据块编码方式设置

        //参见：http://hbase.apache.org/book.html#data.block.encoding.enable

        BLOOMFILT => 'ROW', //参见：http://hbase.apache.org/book.html#bloom.filters.when

        REPLICATION_SCOPE => '', //配置HBase集群replication时需要将该参数设置为1.

        //参见：http://blog.cloudera.com/blog/2012/08/hbase-replication-operational-overview/?utm_source=tuicool

        'REPLICATION_SCOPE is a column-family level attribute

user has to alter each column family with the alter command as

shown above, for all the column families he wants to replicate.'

        VERSIONS => '', //设置保存的版本数

        COMPRESSION => 'NONE', //设置压缩算法

        MIN_VERSIONS => '', //最小存储版本数

        TTL => 'FOREVER', //参见：http://hbase.apache.org/book.html#ttl

        'ColumnFamilies can set a TTL length in seconds, and HBase

reached. This applies to all versions of a row - even the current one.

The TTL time encoded in the HBase for the row is specified in

UTC.'

        KEEP_DELETED_CELLS => 'false', //参见：http://hbase.apache.org/book.html#cf.keep.deleted

        BLOCKSIZE => '', //设置HFile数据块大小（默认64kb）

        IN_MEMORY => 'false',//设置激进缓存，优先考虑将该列族放入块缓存中，

                             //针对随机读操作相对较多的列族可以设置该属性为true

        BLOCKCACHE => 'true' //数据块缓存属性

    }