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From "Shane (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-4711) Counter column has duplicate column names
Date Mon, 24 Sep 2012 18:21:08 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-4711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Shane updated CASSANDRA-4711:
-----------------------------

    Attachment: DuplicateColumnName.java

Rough example of how counter column is being used.
                
> Counter column has duplicate column names
> -----------------------------------------
>
>                 Key: CASSANDRA-4711
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4711
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.1.5
>         Environment: CentOS 5.8 x86_64
> Cassandra 1.1.5
> Hector 1.1-2
>            Reporter: Shane
>         Attachments: DuplicateColumnName.java
>
>
> I have a column family whose comparator is DynamicCompositeType and validation is CounterColumnType.
 During automated testing, there have been occasions where a counter column is created twice,
throwing off the query results for the column.
> Doing a 'get' via the cli, I see the following output for the row:
> => (counter=s@language:b@00000001:s@pt_BR, value=198)
> => (counter=s@language:s@possible, value=200)
> => (counter=s@language:b@00000001:s@pt_BR, value=0)
> If I print out the byte value of the column names along with their MD5 sum I see:
> Name: [language, java.nio.HeapByteBuffer[pos=0 lim=4 cap=4], pt_BR]
> Byte array: ffffff8073086c616e67756167650ffffff80620400010ffffff80730570745f42520
> MD5: 2db353a9a72a0d7cb6cb277ac5125653
> Name: [language, possible]
> Byte array: ffffff8073086c616e67756167650ffffff807308706f737369626c650
> MD5: 82cad9b6a65c794e97cf1d4613e2e367
> Name: [language, java.nio.HeapByteBuffer[pos=0 lim=4 cap=4], pt_BR]
> Byte array: ffffff8073086c616e67756167650ffffff80620400010ffffff80730570745f42520
> MD5: 2db353a9a72a0d7cb6cb277ac5125653
> Unfortunately, I have been unable to duplicate this manually or via a generic test script
and our QA department can only duplicate ~25% of the time.

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