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https://issues.apache.org/jira/browse/CASSANDRA-18337?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Capwell updated CASSANDRA-18337:
--------------------------------------
     Bug Category: Parent values: Correctness(12982)Level 1 values: Recoverable 
Corruption / Loss(12986)
       Complexity: Low Hanging Fruit
    Discovered By: Fuzz Test
    Fix Version/s: 5.x
         Severity: Critical
         Assignee: David Capwell
           Status: Open  (was: Triage Needed)

> Operations.migrateReadRequiredOperations fails due to concurrent access when 
> TransactionStatement is prepared
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-18337
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-18337
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Accord
>            Reporter: David Capwell
>            Assignee: David Capwell
>            Priority: Normal
>             Fix For: 5.x
>
>
> {code}
> java.util.NoSuchElementException
>       at java.base/java.util.ArrayList$Itr.next(ArrayList.java:1000)
>       at 
> org.apache.cassandra.cql3.Operations.migrateReadRequiredOperations(Operations.java:71)
>       at 
> org.apache.cassandra.cql3.Operations.migrateReadRequiredOperations(Operations.java:63)
>       at 
> org.apache.cassandra.cql3.statements.ModificationStatement.getTxnWriteFragment(ModificationStatement.java:828)
>       at 
> org.apache.cassandra.cql3.statements.TransactionStatement.createWriteFragments(TransactionStatement.java:290)
>       at 
> org.apache.cassandra.cql3.statements.TransactionStatement.createUpdate(TransactionStatement.java:309)
>       at 
> org.apache.cassandra.cql3.statements.TransactionStatement.createTxn(TransactionStatement.java:334)
>       at 
> org.apache.cassandra.cql3.statements.TransactionStatement.execute(TransactionStatement.java:375)
> {code}



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