Alexey Goncharuk created IGNITE-7698:
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Summary: Page read during replacement should be outside of segment
write lock
Key: IGNITE-7698
URL: https://issues.apache.org/jira/browse/IGNITE-7698
Project: Ignite
Issue Type: Improvement
Components: persistence
Affects Versions: 2.1
Reporter: Alexey Goncharuk
Fix For: 2.5
When a page is acquired, if it needs to be read from disk, we read it inside
the segment write lock which blocks other threads from acquiring pages that are
already in memory.
This can be easily avoided: once we initialized the page's being loaded RW
lock, we can immediately acquire the write lock - no deadlocks can happen here.
Afterwards, we can release the segment write lock and read the page.
The change seems to be very local.
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