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From "ZhaoYang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-10755) PreparedStatement is the same id for different Japanese katakana characters but same length
Date Mon, 23 Nov 2015 03:31:11 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-10755?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

ZhaoYang updated CASSANDRA-10755:
---------------------------------
    Description: 
String q1 = "UPDATE table SET value='タニャア' WHERE key=? AND key2=?";
String q2 = "UPDATE table SET value='ャアタニ' WHERE key=? AND key2=?";

when using  session.prepare().

q1 and q2 will return the prepared-statement with the same prepared ID, but the query in prepared-statement
is correct.

So if I update using q1 first, all later q2 will not be able to update.( It's means , it still
updates q1)

Please note that the Japanese katakana is the same length in q1 and q2.

Is it related to how Cassandra cache prepared statement?

  was:
String q1 = "UPDATE table SET value='タニャア' WHERE key=? AND key2=?";
String q2 = "UPDATE table SET value='ャアタニ' WHERE key=? AND key2=?";

when using  session.prepare().

q1 and q2 will return the prepared-statement with the same prepared ID.

So if I update using q1 first, all later q2 will not be able to update.

Please note that the Japanese katakana is the same length in q1 and q2.

Is it related to how Cassandra cache prepared statement?


> PreparedStatement is the same id for different Japanese katakana characters but same
length
> -------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-10755
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10755
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: cassandra-2.1.8, java driver 2.1.5, ubuntu 14.04
>            Reporter: ZhaoYang
>
> String q1 = "UPDATE table SET value='タニャア' WHERE key=? AND key2=?";
> String q2 = "UPDATE table SET value='ャアタニ' WHERE key=? AND key2=?";
> when using  session.prepare().
> q1 and q2 will return the prepared-statement with the same prepared ID, but the query
in prepared-statement is correct.
> So if I update using q1 first, all later q2 will not be able to update.( It's means ,
it still updates q1)
> Please note that the Japanese katakana is the same length in q1 and q2.
> Is it related to how Cassandra cache prepared statement?



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