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https://issues.apache.org/jira/browse/IGNITE-16096?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17525709#comment-17525709
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Alexander Lapin edited comment on IGNITE-16096 at 4/21/22 1:20 PM:
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Will be implemented within separate tickets:
 * [MV-Storage API|https://issues.apache.org/jira/browse/IGNITE-16697]
 * [MV-Storage implementation based on RockDB 
storage|https://issues.apache.org/jira/browse/IGNITE-16611]
 * MV-Srorage integration into tx protocol


was (Author: alapin):
Will be implemented within separate tickets:
 * MV-Storage API
 * MV-Storage implementation based on RockDB storage
 * [MV-Srorage integration into tx 
protocol|https://issues.apache.org/jira/browse/IGNITE-16881]

> Implement MVCC support to avoid excessive locking
> -------------------------------------------------
>
>                 Key: IGNITE-16096
>                 URL: https://issues.apache.org/jira/browse/IGNITE-16096
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Alexey Scherbakov
>            Priority: Major
>              Labels: iep-61, ignite-3
>
> We need to implement MVCC support to avoid locking and resulting conflicts, 
> causing aborted transactions.
> Generally, the idea is to use monotonic timestamps to globally order the 
> transactions and write multiple versions for lockless reads.
> See [0][1][2] for decentralized timestamp generation techniques,  [3]for MVCC 
> analysis, [4] for MVCC essentials.
> Also, this technique can be used for atomic metadata updates, as described in 
> the 4.2.3 Schema-Change Transactions of [5] 
> [0] [https://dl.acm.org/doi/pdf/10.1145/3299869.3314049]
> [1] 
> [http://users.ece.utexas.edu/~garg/pdslab/david/hybrid-time-tech-report-01.pdf]
> [2] [https://www.usenix.org/system/files/nsdi21-wei.pdf]
> [3] [http://www.vldb.org/pvldb/vol10/p781-Wu.pdf]
> [4] 
> [https://www.researchgate.net/publication/200030091_Concurrency_Control_in_Distributed_Database_Systems]
> [5] 
> [https://static.googleusercontent.com/media/research.google.com/en//archive/spanner-osdi2012.pdf]



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