Ivan Rakov created IGNITE-5490:
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Summary: Implement replacement for obsolete
CacheMetrics#getOffHeapAllocatedSize
Key: IGNITE-5490
URL: https://issues.apache.org/jira/browse/IGNITE-5490
Project: Ignite
Issue Type: Improvement
Components: cache
Affects Versions: 2.0
Reporter: Ivan Rakov
With 2.0 new architecture, many caches can share one memory policy. Memory
metrics allows to measure memory usage (loaded pages) for the whole policy.
However, there's also a need to measure how much memory (or pages) is used by
each cache.
Before 2.0 such information was accessible with
CacheMetrics#getOffHeapAllocatedSize, but current implemetation returns 0.
We should either implement it or provide alternative metrics (e. g. approximate
number of loaded pages per cache). Please note that precise number of loaded
pages per cache is not defined - one page can contain entries of differet
caches.
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