nikhilkumawat03 opened a new pull request, #4258: URL: https://github.com/apache/cassandra/pull/4258
## Issue Description: Fuzz testing revealed a RuntimeException in LeveledManifest.maxBytesForLevel during repair operations when compaction parameters cause the calculated maximum bytes for a level to exceed Long.MAX_VALUE (9,223,372,036,854,775,807). The error occurs with inputs like fanout_size=90, sstable_size_in_mb=1088, and level=8, resulting in Math.pow(90, 8) * 1141899264 ≈ 4.9155 × 10²⁴, which exceeds Long.MAX_VALUE. The issue arises because LeveledCompactionStrategy does not validate these parameters during table creation, allowing invalid configurations to persist until repair. ### The original error (from LeveledManifest.java): `java.lang.RuntimeException: At most 9223372036854775807 bytes may be in a compaction level; your maxSSTableSize must be absurdly high to compute 4.915501902751334E24` This PR adds proactive validation in LeveledCompactionStrategy.validateOptions to ensure fanout_size and sstable_size_in_mb do not cause an overflow, throwing a ConfigurationException during CREATE TABLE or ALTER TABLE instead of failing later during repair. ### Example which created issue during fuzz testing ([CASSANDRA-20570](https://issues.apache.org/jira/browse/CASSANDRA-20570)) ```CREATE KEYSPACE test WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1}; CREATE TABLE test.table1 (k int PRIMARY KEY, v int) WITH compaction = { 'class': 'LeveledCompactionStrategy', 'fanout_size': '90', 'sstable_size_in_mb': '1088' };``` Patch by: Nikhil Kumawat; Reviewed by: TBD JIRA: [CASSANDRA-20570](https://issues.apache.org/jira/browse/CASSANDRA-20570) -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
