slim bouguerra created HIVE-21686: ------------------------------------- Summary: Brute Force eviction can lead to a random uncontrolled eviction pattern. Key: HIVE-21686 URL: https://issues.apache.org/jira/browse/HIVE-21686 Project: Hive Issue Type: Bug Reporter: slim bouguerra Assignee: slim bouguerra
Current logic used by brute force eviction can lead to a perpetual random eviction pattern. For instance if the cache build a small pocket of free memory where the total size is greater than incoming allocation request, the allocator will randomly evict block that fits a particular size. This can happen over and over therefore all the eviction will be random. In Addition this random eviction will lead a leak in the linked list maintained by the policy since it does not know anymore about what is evicted and what not. -- This message was sent by Atlassian JIRA (v7.6.3#76005)