Parquet Querier: Add TTL to Parquet Queryable Shard Cache #6991
Description
Is your feature request related to a problem? Please describe.
Today, Parquet queryable shard cache caches Parquet file shard inmemory. It is a simple LRU cache where eviction is based on a configured cache size on number of cached items only.
As an inmemory cache, it doesn't support TTL so cached parquet shard is never cleaned up and stays in memory forever if never getting evicted.
Describe the solution you'd like
Add TTL for each parquet cache shard and record last access time. Remove the cached shard if idle more than TTL time.