[CASSANDRA-18513] Limit the read size on the row level

• Type: Improvement
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 4.0.11, 4.1.3, 5.0-alpha1, 5.0
• Component/s: Local/SSTable
• Change Category: Quality Assurance
• Complexity: Low Hanging Fruit
• Platform: All

Source Control Link

https://github.com/apache/cassandra/commit/5143bd81e82c35ce686dd40860ec2aebe30aaf22

Test and Documentation Plan

run regression tests

• Assignee: Jacek Lewandowski
• Reporter: Jacek Lewandowski

Authors

Jacek Lewandowski

Reviewers

Berenguer Blasi, Maxwell Guo

• Created: 10/May/23 06:51
• Updated: 12/Sep/23 13:02
• Resolved: 12/Jun/23 09:37

Description

When deserializing a row, we have a limit on amount of data we can read per cell. If an sstable is corrupted in a certain way, it may read many cells with extreme length leading to oom errors. When we read a row, it has a row size in the beginning. The idea is to limit the read size for a cell to the minimum of the max cell length and the remaining row size.