Andrew Mashenkov created IGNITE-7489:
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Summary: Weird FillFactor metric fluctuation.
Key: IGNITE-7489
URL:
https://issues.apache.org/jira/browse/IGNITE-7489 Project: Ignite
Issue Type: Bug
Reporter: Andrew Mashenkov
Attachments: FillFactorTest.java
PFA a repro.
There is 2 node grid with no persistence configure. Topology is stable.
Cache is populated with unique keys (no updates) and observe allocated data pages metric grows constantly as expected.
Used memory is calculated as PhysicalMemoryPages*PageSize*FillFactor and expected it will be constantly grows (or may be with a small error).
But the error look too large, used memory (and FillFactor as well) may 2-10+ time differs.
E.g. allocated pages, fillFactor, usedMem (bytes):
node-0: 13789 0.851563 48096032
node-1: 14447 0.781250 46230400
In next second:
node-0: 13958 0.039063 2233280
node-1: 14624 0.347656 20824576
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