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https://issues.apache.org/jira/browse/CASSANDRA-14098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vasily Vasilkov updated CASSANDRA-14098:
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Attachment: 14098-3.0.txt
Status: Patch Available (was: Open)
> Potential Integer Overflow
> --------------------------
>
> Key: CASSANDRA-14098
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14098
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Reporter: songwanging
> Priority: Trivial
> Labels: lhf
> Attachments: 14098-3.0.txt
>
>
> Our tool DeepTect has detected a potential integer overflow:
> Path: cassandra/src/java/org/apache/cassandra/service/StorageService.java
> {code:java}
> ...
> long totalRowCountEstimate = cfs.estimatedKeysForRange(range);
> ...
> int splitCount = Math.max(1, Math.min(maxSplitCount,
> (int)(totalRowCountEstimate / keysPerSplit)));
> {code}
> In the above code snippet, "totalRowCountEstimate" is a long variable,
> "keysPerSplit" is an integer variable. If "totalRowCountEstimate" is super
> large, directly casting "(totalRowCountEstimate / keysPerSplit" into integer
> will definitely lead to a potential integer overflow.
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