HBase（Easy）：如何在hbase shell中执行范围前缀扫描 [英] HBase (Easy): How to Perform Range Prefix Scan in hbase shell

问题描述

我正在设计一个应用程序以在hbase上运行，并且想要交互式地探索我的群集的内容。我在hbase shell中，并且想要执行从字符abc开始的所有密钥的扫描。这样的密钥可能包括abc4，abc92，abc20014等等......我试过一次扫描

  hbase（main ）：003：0>扫描'mytable'，{STARTROW => 'abc'，ENDROW => 'abc'} 
  

但是这似乎没有返回任何东西，因为在技术上没有rowkeyabc只有以abc开头的rowkeys

我想要的是类似于

  HBase的（主）：003：0>扫描'mytable'，{STARTSROWPREFIX => 'abc'，ENDROWPREFIX => 'abc'} 
  

我听说HBase能够快速完成这项任务，并且是其主要卖点之一。如何在hbase shell中执行此操作？

在此先感谢。

解决方案

  scan'mytable'，{STARTROW => 'abc'，ENDROW => 'abd'} 
  

I am designing an app to run on hbase and want to interactively explore the contents of my cluster. I am in the hbase shell and I want to perform a scan of all keys starting with the chars "abc". Such keys might inlcude "abc4", "abc92", "abc20014" etc... I tried a scan

hbase(main):003:0> scan 'mytable', {STARTROW => 'abc', ENDROW => 'abc'}

But this does not seem to return anything since there is technically no rowkey "abc" only rowkeys starting with "abc"

What I want is something like

hbase(main):003:0> scan 'mytable', {STARTSROWPREFIX => 'abc', ENDROWPREFIX => 'abc'}

I hear HBase can do this quickly and is one of its main selling points. How do I do this in the hbase shell?

Thanks in advance.

解决方案

So it turns out to be very easy. The scan ranges are not inclusive, the logic is start <= key < end. So the answer is

scan 'mytable', {STARTROW => 'abc', ENDROW => 'abd'}

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