[jira] [Created] (IGNITE-8592) Network partitions lead to two independent clusters

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

Mo created IGNITE-8592:
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             Summary: Network partitions lead to two independent clusters
                 Key: IGNITE-8592
                 URL: https://issues.apache.org/jira/browse/IGNITE-8592
             Project: Ignite
          Issue Type: Bug
    Affects Versions: 2.4
            Reporter: Mo


Creating a network partition in a replicated Ignite cluster leads to creating two independent clusters, each of which would operate independently from the other, even after the network partition is healed.

 

Setup: 3 servers (s1,s2,s3) two clients (c1,c2).

A partition created \{(s1,s2,c1),(s3,c2)}.

--> At this point two independent clusters form; one containing s1 and s2, while the other containing s3. The two never rejoin even after the partition is healed. 

 

This creates different kinds of problems for the different data structure ignite provides, such as the cache (stale reads, and data unavailability), atomic types (atomicref and long ) ... etc. 

 

These are the settings used for the replicated cache:

 
cfg.setCacheMode(CacheMode.REPLICATED);
cfg.setAtomicityMode(CacheAtomicityMode.ATOMIC);
cfg.setWriteSynchronizationMode(CacheWriteSynchronizationMode.FULL_SYNC);
cfg.setReadFromBackup(false);
cfg.setPartitionLossPolicy(PartitionLossPolicy.READ_ONLY_SAFE);



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