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From "Pavel Pereslegin (Jira)" <j...@apache.org>
Subject [jira] [Reopened] (IGNITE-5302) Empty LOST partition may be used as OWNING after resetting lost partitions
Date Tue, 24 Sep 2019 13:02:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-5302?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Pavel Pereslegin reopened IGNITE-5302:

> 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
>            Priority: Blocker
>              Labels: MakeTeamcityGreenAgain, Muted_test, test-fail
>             Fix For: 2.8
> 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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