如何获取所有版本的HBase行

问题描述

我正在尝试在hbase中执行以下命令:

I am trying to do the following command in hbase:

scan 'testLastVersion' {VERSIONS=>8}

并且它仅返回该行的最后一个版本.
您知道如何通过命令外壳和Java代码获取row的所有版本吗?谢谢！

And it return only the last version of the row.
Do you know how can I get all the versions of row through command shell and through java code?Thanks!

推荐答案

我认为您在此处缺少'.'.命令应该是这样的:

I think you are missing the ',' there.. The command should be something like this:

scan 'emp', {VERSIONS=>8}

即使您缺少逗号，HBase也会抛出错误:

Even if you are missing the comma, HBase should throw an error:

SyntaxError: (hbase):16: syntax error, unexpected tLCURLY

我试图模拟您的情况并获得所有结果.请在下面找到它们.

I tried to simulate a your scenario and got all the results. Please find them below.

hbase(main):010:0> put 'emp', '1', 'personal_data:name', 'Ajay'
0 row(s) in 0.0220 seconds
hbase(main):012:0> put 'emp', '1', 'personal_data:name', 'Vijay'
0 row(s) in 0.0140 seconds
hbase(main):014:0> put 'emp', '1', 'personal_data:name', 'Ceema'
0 row(s) in 0.0070 seconds

hbase(main):017:0> scan 'emp', {VERSIONS=>3}
ROW                                        COLUMN+CELL
 1                                         column=personal_data:name, timestamp=1472651320449, value=Ceema
 1                                         column=personal_data:name, timestamp=1472651313396, value=Vijay
 1                                         column=personal_data:name, timestamp=1472651300718, value=Ajay
1 row(s) in 0.0220 seconds

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