[jira] [Commented] (IGNITE-5302) Empty LOST partition may be used as OWNING after resetting lost partitions

["Vladimir Ozerov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-5302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16185836#comment-16185836 ] 

Vladimir Ozerov commented on IGNITE-5302:
-----------------------------------------

[~sergey-chugunov], [~cyberdemon], 
Folks, I doubt we are gonna make it to 2.3 release. Please correct me if I am wrong. Does it make sense to move the ticket to 2.4?

> Empty LOST partition may be used as OWNING after resetting lost partitions
> --------------------------------------------------------------------------
>
>                 Key: IGNITE-5302
>                 URL: https://issues.apache.org/jira/browse/IGNITE-5302
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Sergey Chugunov
>            Assignee: Dmitriy Sorokin
>            Priority: Blocker
>              Labels: MakeTeamcityGreenAgain, Muted_test, test-fail
>             Fix For: 2.3
>
>
> h2. Notes
> Test *testPartitionLossAndRecover* reproducing the issue can be found in ignite-5267 branch with PDS functionality.
> h2. Steps to reproduce
> # Four nodes are started, some key is added to partitioned cache
> # Primary and backup nodes for the key are stopped, key's partition is declared LOST on remaining nodes
> # Primary and backup nodes are started again, cache's lost partitions are reset
> # Key is requested from cache
> h2. Expected behavior
> Correct value is returned from primary for this partition
> h2. Actual behavior
> Request for value is sent to node where partition is empty (not to primary node), null is returned
> h2. Latest findings
> # The main problem with the scenario is that request for key gets mapped not only to P/B nodes with real value but also to the node where that partition existed only in LOST state after P/B shutdown on step #2
> # It was found that on step #3 after primary and backup are joined partition counter is increased for empty partition in LOST state which looks wrong



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