[CASSANDRA-4711] Duplicate column names with DynamicCompositeType

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 1.1.7

Environment

CentOS 5.8 x86_64
Cassandra 1.1.5
Hector 1.1-2

• Severity: Normal
• Assignee: Sylvain Lebresne
• Reporter: Shane

Authors

Sylvain Lebresne

Reviewers

Jonathan Ellis

• Created: 24/Sep/12 16:35
• Updated: 16/Apr/19 09:32
• Resolved: 29/Oct/12 10:14

Description

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.