Bulk Operation

HBASE-27743 Put the cached time at the beginning of the block; run cache validation in the background when retrieving the persistent cache

HBASE-27743 Persistent cache map can get corrupt if crash happens midway through the write

HBASE-27743 Interrupt BucketCachePersister thread when BucketCache is shutdown

HBASE-27743 Define RPC API for cache cleaning

HBASE-27743 Tooling for parsing/reading the prefetch files list file

HBASE-27743 Update the list of prefetched files upon region movement

HBASE-27743 Update the list of prefetched hfiles upon simple block eviction