b-slim opened a new pull request #944: [Hive-22760] Adding Clock based eviction strategy. URL: https://github.com/apache/hive/pull/944 This Pr adds a new Eviction strategy based on simple clock algorithm. Main goal is to bring down the memory overhead of the cache accounting and make it lock free. To reduce the memory overhead i have removed the unwanted fields used by lrfu strategy. To Avoid locking i have added one bit as part of the buffer state that is modified as cas operation.
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