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https://issues.apache.org/jira/browse/CASSANDRA-4711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13485103#comment-13485103
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Jonathan Ellis commented on CASSANDRA-4711:
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+1 on the fix.
The next release will be 1.1.7, probably in a couple weeks. If you want a
hotfix sooner than that, then rolling your own patched 1.1.6 is your best
option.
> Duplicate column names with DynamicCompositeType
> ------------------------------------------------
>
> 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
> Assignee: Sylvain Lebresne
> Fix For: 1.1.7
>
> Attachments: 4711.txt, 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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