[jira] [Comment Edited] (IGNITE-15334) Incorrect detection of multiple grid instances

["Sergey Kadaner (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-15334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571330#comment-17571330 ] 

Sergey Kadaner edited comment on IGNITE-15334 at 7/26/22 10:21 AM:
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I was trying to start my service in a development environment without any actual Ignite server. Caching is not required in such a scenario.

Unfortunately, I do not have the stack trace anymore.


was (Author: sergeykad):
I was trying to start my service in a development environment without any actual Ignite server. Caching is not required in such a scenario.

Unfortunately I do not have the stack trace anymore.

> Incorrect detection of multiple grid instances
> ----------------------------------------------
>
>                 Key: IGNITE-15334
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15334
>             Project: Ignite
>          Issue Type: Bug
>    Affects Versions: 2.9.1
>            Reporter: Sergey Kadaner
>            Priority: Major
>
> The IgnitionEx class has a validation that checks if SPI supports multiple grid instances. However, the following code is used to check if it is a single instance:
> {code:java}
> startCtx.single(grids.size() == 1);
> {code}
> In my case the grid size is zero, therefore startCtx.single is false which triggers an error for SPI that does not support multiple instances.
>  
> IMHO the the following code should be used instead:
> {code:java}
> startCtx.single(grids.size() < 2);{code}



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