在HBase中以相反的顺序扫描HBASE行前缀 [英] HBASE row prefix scan in reverse order in hbase

问题描述

我有以下格式的行键:

<name>--<zero-padded timestamp>

使用HBASE shell，我想找到带有前缀.的最后15个条目.

Using HBASE shell I want to find last 15 entries with the prefix .

scan 'mytable', {LIMIT => 15, ROWPREFIXFILTER => 'name' }

给我前15个，但是:

scan 'mytable', {LIMIT => 15, REVERSED => TRUE, ROWPREFIXFILTER => 'name'}

返回零结果...

这种请求的语法是什么?

What is the syntax for such a request?

是否有可能，还是我需要做一些俗气的事情，例如将MAXINT-timestamp用作我的行键来手动反转键的顺序?

Is it possible, or do I have to do something cheesy like use MAXINT-timestamp as my rowkey to manually reverse the key ordering?

推荐答案

我可以在HBase Shell环境中执行您的查询命令，并获得预期的结果.但是无法获得任何结果抛出Java Client.我的HBase版本是0.98.

I can execute your query command in HBase shell environment, and get the expected result. But couldn't get any result throw Java Client. My HBase version is 0.98.

在将HBase客户端扫描与reversed = true一起使用时出现错误，请参见此jira问题

There is a bug when use HBase client scan with reversed = true, see this jira issue hbase-client: scanner with reversed=true and small=true get no result

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