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https://issues.apache.org/jira/browse/HIVE-2722?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13187398#comment-13187398
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caofangkun commented on HIVE-2722:
----------------------------------

hive -e "SELECT instr('ab中国c字d', '国') from dual limit 1"
Result : 4

hive -e "select  instr('ab中国c字d', '字') from dual limit 1"
Result: 6
                
> GenericUDFUtils.findText use CharBuffer other than ByteBuffer will be better
> ----------------------------------------------------------------------------
>
>                 Key: HIVE-2722
>                 URL: https://issues.apache.org/jira/browse/HIVE-2722
>             Project: Hive
>          Issue Type: Improvement
>          Components: UDF
>    Affects Versions: 0.8.0
>         Environment: Linux zongren-VirtualBox 3.0.0-14-generic #23-Ubuntu SMP 
> Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
> java version "1.6.0_25"
> hadoop-0.20.2-cdh3u0
> hive-0.7.0-cdh3u0
>            Reporter: caofangkun
>            Priority: Minor
>              Labels: udf
>             Fix For: 0.9.0
>
>         Attachments: HIVE-2722.patch, udf_instr_1.q
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> select instr("中文字符测试-第一行","-") from testTable limit 1;
> result:19 (one Chinese Character was considered as  3 Unicode bits)
> select substr("中文字符测试-第一行",1,2) from testTable limit 1;
> result: "中文" (one Chinese Character was considered as 1 Unicode Unit )
> instr should considered one chinese character as one Unicode Unit too.

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