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https://issues.apache.org/jira/browse/CASSANDRA-15470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17017345#comment-17017345
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Jordan West commented on CASSANDRA-15470:
-----------------------------------------
Thanks [~mallika]. Comments below:
- Thank you for adding a test!
- For the {{_mb}} fields the error messages should read 2TiB instead of GiB.
- Instead of having separate if/else if clauses for the min and max, consider
combining conditions (e.g. {{conf.column_index_size_in_kb <= 0 ||
conf.column_index_size_in_kb >= 2 * 1024 * 1024}}) and making the log message
read something like “[field] must be a positive value less than 2GiB, but was”
- Consider making {{2 * 1024 * 1024}} a constant.
> Potential Overflow in DatabaseDescriptor Functions That Convert Between KB/MB
> & Bytes
> -------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15470
> Project: Cassandra
> Issue Type: Bug
> Components: Local/Config
> Reporter: Jordan West
> Assignee: Mallika Kulkarni
> Priority: Normal
> Labels: pull-request-available
> Fix For: 4.0-rc
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {{DatabaseDescriptor}} has several functions that convert between user
> supplied sizes in KB/MB and bytes. These are implemented without much
> consistency and, while unlikely, several have the potential to overflow since
> validation on the input is missing. Meanwhile, some widen the number to a
> long correctly. Options include: widening in all places or simply doing
> better validation on start up — currently only the lower bound of the valid
> range is checked for many of these fields.
> List of Affected {{DatabaseDescriptor}} Methods:
> * {{getColumnIndexSize}}
> * {{getColumnIndexCacheSize}}
> * {{getBatchSizeWarnThreshold}}
> * {{getNativeTransportFrameBlockSize}}
> * {{getRepairSessionSpaceInMegabytes}}
> * {{getNativeTransportMaxFrameSize}}
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