Alexander Belyak updated IGNITE-8288:
    Priority: Major  (was: Minor)

> ScanQuery ignore readFromBackups
> --------------------------------
>                 Key: IGNITE-8288
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8288
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Alexander Belyak
>            Priority: Major
> 1) Create partitioned cache with backups and readFromBackup(false) on 2+ 
> nodes cluster
> 2) Select some partition N, local node should not be primary of partition N
> 3) execute: cache.query(new ScanQuery<>().setLocal(true).setPartition(N))
> Expected result:
> empty result (probaply with logging smth like "Trying to execute local query 
> <query> by primarypartitions with non pridmary local partition N") or even 
> throw exception
> Actual result:
> executing (with ScanQueryFallbackClosableIterator) query on local node 
> ignoring readFromBackups flag.
> Problem is that we execute query on backup partitions even if readFromBackups 
> explicitly set to false.
> Same behaviour can be achieved if we get empty node list from 
> GridCacheQueryAdapter.node() by any reasons, for example - if we run "local" 
> query from non data node from given cache (see 
> GridDiscoveryNamager.cacheAffinityNode(ClusterNode node, String cacheName) in 
> GridcacheQueryAdapter.executeScanQuery()
> GridCacheQueryAdapter

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