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From "Dmitriy Pavlov (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-5874) Store TTL expire times in B+ tree on per-partition basis
Date Tue, 26 Jun 2018 17:51:20 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-5874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmitriy Pavlov updated IGNITE-5874:
-----------------------------------
    Fix Version/s:     (was: 2.6)
                   2.7

> Store TTL expire times in B+ tree on per-partition basis
> --------------------------------------------------------
>
>                 Key: IGNITE-5874
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5874
>             Project: Ignite
>          Issue Type: Improvement
>          Components: cache, persistence
>    Affects Versions: 2.1
>            Reporter: Ivan Rakov
>            Assignee: Andrew Mashenkov
>            Priority: Major
>              Labels: MakeTeamcityGreenAgain
>             Fix For: 2.7
>
>         Attachments: IgnitePdsWithTtlTest.java
>
>
> TTL expire times for entries are stored in PendingEntriesTree, which is singleton for
cache. When expiration occurs, all system threads iterate through the tree in order to remove
expired entries. Iterating through single tree causes contention and perfomance loss. 
> Related performance issue: https://issues.apache.org/jira/browse/IGNITE-5793
> We should keep instance of PendingEntriesTree for each partition, like we do for CacheDataTree.



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