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Posted to issues@ignite.apache.org by "Mo (JIRA)" <ji...@apache.org> on 2018/06/26 22:03:00 UTC

[jira] [Updated] (IGNITE-8881) Semaphore hangs on network partitioning

     [ https://issues.apache.org/jira/browse/IGNITE-8881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mo updated IGNITE-8881:
-----------------------
    Description: 
Scenario: Three servers (s1,s2,s3) two clients (c1,c2).

A semaphore with one permit is created. 

Config: 

{{1. Release acquired permits if the node that owned them left topology: set to false}}

2.  TCP discovery mode: on

steps: 
 # c2 acquires the permit.
 # Network failure happens, isolating c2 from the rest of nodes for a period of time.
 # Network heals.
 # c2 tries to release the permit but hangs. 

 

  was:
Scenario: Three servers (s1,s2,s3) two clients (c1,c2).

A semaphore with one permit is created. 

Config: 

{{1. Release acquired permits if the node that owned them left topology: set to false}}

2.  TCP discovery mode: on

 1.c2 takes a lock
2. Network partitioning \{(s1,s2,,s3,c1),(c2)}, then heal it
4. c3 tries to release the lock, but hangs

steps: 
 # c2 acquires the permit.
 # Network failure happens, isolating c2 from the rest of nodes for a period of time.
 # Network heals.
 # c2 tries to release the permit but hangs. 

 


> Semaphore hangs on network partitioning
> ---------------------------------------
>
>                 Key: IGNITE-8881
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8881
>             Project: Ignite
>          Issue Type: Bug
>          Components: data structures
>    Affects Versions: 2.4
>            Reporter: Mo
>            Priority: Major
>
> Scenario: Three servers (s1,s2,s3) two clients (c1,c2).
> A semaphore with one permit is created. 
> Config: 
> {{1. Release acquired permits if the node that owned them left topology: set to false}}
> 2.  TCP discovery mode: on
> steps: 
>  # c2 acquires the permit.
>  # Network failure happens, isolating c2 from the rest of nodes for a period of time.
>  # Network heals.
>  # c2 tries to release the permit but hangs. 
>  



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