RHbase 命令

hb.init("115.28.167.22",9090)

hbase thrift端口是9090

rhbase的相关函数：

hb.compact.table      hb.describe.table     hb.insert             hb.regions.table
hb.defaults           hb.get                hb.insert.data.frame  hb.scan
hb.delete             hb.get.data.frame     hb.list.tables        hb.scan.ex
hb.delete.table       hb.init               hb.new.table          hb.set.table.mode

hbase和rhbase的基本操作对比：

建表
HBASE:     create 'student_shell','info'
RHBASE:    hb.new.table("student_rhbase","info")

列出所有表
HBASE:     list
RHBASE:    hb.list.tables()

显示表结构
HBASE:     describe 'student_shell'
RHBASE:    hb.describe.table("student_rhbase")

插入一条数据
HBASE:     put 'student_shell','mary','info:age','19'
RHBASE:    hb.insert("student_rhbase",list(list("mary","info:age", "24")))

读取数据
HBASE:     get 'student_shell','mary'
RHBASE:    hb.get('student_rhbase','mary')

删除表(HBASE需要两条命令，rhbase仅是一个操作)
HBASE:     disable 'student_shell'
HBASE:     drop 'student_shell'
RHBASE:    hb.delete.table('student_rhbase')

代码部分：

Hbase Shell

> create 'student_shell','info'
> list

    TABLE
    student_shell

> describe 'student_shell'

   DESCRIPTION                                                          ENABLED
   {NAME => 'student_shell', FAMILIES => [{NAME => 'info', DATA_BLOCK_ true
   ENCODING => 'NONE', BLOOMFILTER => 'NONE', REPLICATION_SCOPE => '0'
   , VERSIONS => '3', COMPRESSION => 'NONE', MIN_VERSIONS => '0', TTL
   => '2147483647', KEEP_DELETED_CELLS => 'false', BLOCKSIZE => '65536
   ', IN_MEMORY => 'false', ENCODE_ON_DISK => 'true', BLOCKCACHE => 't
   rue'}]}

>  put 'student_shell','mary','info:age','19'
>  get 'student_shell','mary'

  COLUMN                      CELL
  info:age                   timestamp=1365414964962, value=19

> disable 'student_shell'
> drop 'student_shell'

rhbase script

~ R
> library(rhbase)
> hb.init()

    <pointer: 0x16494a0>
    attr(,"class")
    [1] "hb.client.connection"

 >hb.new.table("student_rhbase","info",opts=list(maxversions=5,x=list(maxversions=1L,compression='GZ',inmemory=TRUE)))

   [1] TRUE

> hb.list.tables()

    $student_rhbase
      maxversions compression inmemory bloomfiltertype bloomfiltervecsize
    info:           5        NONE    FALSE            NONE                  0
          bloomfilternbhashes blockcache timetolive
    info:                   0      FALSE         -1

 > hb.describe.table("student_rhbase")

          maxversions compression inmemory bloomfiltertype bloomfiltervecsize
    info:           5        NONE    FALSE            NONE                  0
          bloomfilternbhashes blockcache timetolive
    info:                   0      FALSE         -1

> hb.insert("student_rhbase",list(list("mary","info:age", "24")))

    [1] TRUE

> hb.get('student_rhbase','mary')

    [[1]]
    [[1]][[1]]
    [1] "mary"

    [[1]][[2]]
    [1] "info:age"

    [[1]][[3]]
    [[1]][[3]][[1]]
    [1] "24"

> hb.delete.table('student_rhbase')

    [1] TRUE