Maksim Timonin created IGNITE-20822:
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             Summary: Refactoring WALIterator filter by higher bound
                 Key: IGNITE-20822
                 URL: https://issues.apache.org/jira/browse/IGNITE-20822
             Project: Ignite
          Issue Type: Improvement
            Reporter: Maksim Timonin
            Assignee: Maksim Timonin


Currently filter by higher bound has different implementation in WAL iterator 
implementations:
 # Standalone filters by self. It has a little bug - one excess iteration over 
underlying iterator to check bounds.
 # RecordsIterator filters only by index of higherBound. It might be dangerous 
in concurrent scenario. It's better to filter by fixed position (as it 
guarantees that this part of segment is completed). 



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