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https://issues.apache.org/jira/browse/IGNITE-2310?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Taras Ledkov reassigned IGNITE-2310:
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Assignee: Taras Ledkov (was: Andrey Gura)
> Lock cache partition for affinityRun/affinityCall execution
> -----------------------------------------------------------
>
> Key: IGNITE-2310
> URL: https://issues.apache.org/jira/browse/IGNITE-2310
> Project: Ignite
> Issue Type: New Feature
> Components: cache
> Reporter: Valentin Kulichenko
> Assignee: Taras Ledkov
> Priority: Critical
> Labels: community
> Fix For: 1.7
>
>
> Partition of a key passed to {{affinityRun}} must be located on the affinity
> node when a compute job is being sent to the node. The partition has to be
> locked on the cache until the compute job is being executed. This will let to
> execute queries safely (Scan or local SQL) over the data that is located
> locally in the locked partition.
> In addition Ignite Compute API has to be extended by adding {{affinityCall}}
> and {{affinityRun}} methods that accept list of caches which partitions have
> to be locked at the time a compute task is being executed.
> Test cases to validate the functionality:
> 1) local SQL query over data located in a concrete partition in multple
> caches.
> - create cache Organisation cache and create Persons cache.
> - collocate Persons by 'organisationID';
> - send {{affinityRun}} using 'organisationID' as an affinity key and passing
> Organisation and Persons caches' names to the method to be sure that the
> partition will be locked on caches;
> - execute local SQL query "SELECT * FROM Persons as p, Organisation as o
> WHERE p.orgId=o.id' on a changing topology. The result set must be complete,
> the partition over which the query will be executed mustn't be moved to the
> other node. Due to affinity collocation the partition number will be the same
> for all Persons that belong to particular 'organisationID'
> 2) Scan Query over particular partition that is locked when {{affinityCall}}
> is executed.
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