Ksenia Rybakova created IGNITE-5590:
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Summary: Physical and logical caches wtih the same amount of data
have different storage size
Key: IGNITE-5590
URL: https://issues.apache.org/jira/browse/IGNITE-5590
Project: Ignite
Issue Type: Bug
Affects Versions: 2.1
Reporter: Ksenia Rybakova
Priority: Minor
The following experiment was done to compare logical vs physical caches witn
PDS:
- CacheRandomOperation benchmark was used to load data into caches
- Number of loaded entries 10M per cache
- All caches are atomic: 10 logical caches in 1 group vs 10 physical caches
- walHistorySize =2
- One default memory policy, memory config is default as well
Configs are attached.
||10 logical caches in 1 group|| 10 physical caches ||Comments||
||Total size of work/db/127_0_0_1*| |Among all hosts|
|23.6G|28.6G|Mainly because total size of partitions files (part-xxxx.bin) in
"physical" case is bigger. In "phisical" case index.bin is one per cache while
in "logical" case is one per group, but it's size is 16Kb so it doesn't make
any difference.|
||Total size of work/db/wal/archive| |Among all hosts|
|86.7G|63.6G|In "physical" case archive has more files.|
||Total size of work/db/wal/127_0_0_1*| |Among all hosts|
|7.6G|7.6G| |
The size difference should be investigated, currently reason is unclear.
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