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Posted to issues@ignite.apache.org by "Ivan Bessonov (Jira)" <ji...@apache.org> on 2020/12/01 09:04:00 UTC

[jira] [Created] (IGNITE-13786) PDS defragmentation can inflate index size

Ivan Bessonov created IGNITE-13786:
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             Summary: PDS defragmentation can inflate index size
                 Key: IGNITE-13786
                 URL: https://issues.apache.org/jira/browse/IGNITE-13786
             Project: Ignite
          Issue Type: Bug
            Reporter: Ivan Bessonov
            Assignee: Ivan Bessonov


For huge caches it is possible that defragmentation will lead to bigger indexes size.

The reason is that we only append new data to index trees and never insert into the middle, this leads to under-utilization of B+Tree pages space.



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