when i read source code of RangServer.cc, I found in Construction there are
two cache defined.
Global::block_cache = new FileBlockCache(block_cache_min, block_cache_max,
cfg.get_bool("BlockCache.Compressed"));
m_query_cache = new QueryCache(query_cache_memory);
I want to know what effect do the cache mentioned above do?
BTW, I also found in AccessGroup.h, the class CellStoreMaintenanceData has
member called CellStore::IndexMemoryStats index_stats;
when purge_cellstore_indexes, the memory used be computed as follows:
memory_used = csmd[i]->index_stats.block_index_memory +
csmd[i]->index_stats.bloom_filter_memory;
I want to know the two x_x_memory at this place be used as what?
Do the x_x_memory and the x_cache have relationship? and what relationship
between them?
Any advice be appreciated.
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