Zac

Refactor query optimization using materialized view

5

Regarding the materialized view rewrite code logic, there are a few aspects can be improved as follows: * As long as the optimization feature is on, `MaterializedViewCandidateExtractor` would always fetch...

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Log eviction when regions age out

6

When TTL control ages out old cache entries and evict out the entire regions from a ssd file, it doesn't update log eviction log. So when server recover from checkpoint...

Use mutex lock to protect cache shutdown

9

Currently, SSD cache use atomics to handle shutdown and writeInProgress counter which are used a lock to prevent concurrent writes to a SSD file. It is better to use mutex...

Use Velox filesystem for SSD cache data file

5

Summary: SSD cache currently uses native functions for file operations. This needs to be switched to Velox filesystem, so more advanced testing can be built by leveraging features like fault...