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From "Ivan Pavlukhin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-12069) Create cache shared preloader
Date Wed, 14 Aug 2019 12:38:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-12069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16907230#comment-16907230
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Ivan Pavlukhin commented on IGNITE-12069:
-----------------------------------------

[~xtern], thank you for a clarification.

> Create cache shared preloader
> -----------------------------
>
>                 Key: IGNITE-12069
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12069
>             Project: Ignite
>          Issue Type: Sub-task
>            Reporter: Maxim Muzafarov
>            Assignee: Pavel Pereslegin
>            Priority: Major
>              Labels: iep-28
>
> {{CacheSharedPreloader}} must do the following:
>  # build the map of partitions and corresponding supplier nodes from which partitions
will be loaded [1];
>  # switch cache data storage to {{no-op}} and back to original (HWM must be fixed here
for the needs of historical rebalance) under the checkpoint and keep the partition update
counter for each partition [1];
>  # run async the eviction indexes for the list of collected partitions (API must be provided
by IGNITE-11075) [2];
>  # send a request message to each node one by one with the list of partitions to load
[2];
>  # wait for files received (listening for the transmission handler) [2];
>  # run rebuild indexes async over the receiving partitions (API must be provided by IGNITE-11075)
[2];
>  # run historical rebalance from LWM to HWM collected above (LWM can be read from the
received file meta page) [1];
> The points marked with the label {{[1]}} must be done prior to {{[2]}}.
>  
> NOTE. The following things need to be checked:
>  # Rebalancing of MVCC cache groups;
>  # How LWM and HWM will be set for the historical rebalance;



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