[IGNITE-8134] Services can't be deployed on servers outside of baseline topology

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4
• Fix Version/s: 2.7
• Component/s: managed services, persistence
• Assignee: Denis Mekhanikov
• Reporter: Stanislav Lukyanov
• Created: 04/Apr/18 13:36
• Updated: 26/Jun/18 17:50
• Resolved: 20/Apr/18 15:41

Description

If a node is not a part of the baseline topology, the services will never be deployed on it. In particular, if that node calls a synchronous deploy* method, the method will hang.
After the node is added to the baseline, all previously initiated deployments succeed (and deploy* methods return).

It seems that the issue is with the continuous query started by the GridServiceProcessor on the ignite-sys-cache.

Example:
=====================

public class BltServicesBug {
    public static void main(String[] args) {
        // start one node
        IgniteConfiguration cfg1 = new IgniteConfiguration()
            .setIgniteInstanceName("node1")
            .setDataStorageConfiguration(
                new DataStorageConfiguration()
                    .setDefaultDataRegionConfiguration(
                        new DataRegionConfiguration()
                            .setPersistenceEnabled(true)
                    )
            );
        try (Ignite ignite1 = Ignition.start(cfg1)) {
            // activate and set baseline topology
            ignite1.cluster().active(true);

            // start another node
            IgniteConfiguration cfg2 = new IgniteConfiguration(cfg1)
                .setIgniteInstanceName("node2");
            try (Ignite ignite2 = Ignition.start(cfg2)) { 
                // try to deploy a service; 
                // this call hangs until the second node is added to the BLT (e.g. externally via control.sh) 
                ignite2.services().deployNodeSingleton("myService", new MyServiceImpl()); System.out.println(">>>>> Deployed"); }

            }

        }

        private static class MyServiceImpl implements Service {
            @Override public void cancel(ServiceContext ctx) { }
            @Override public void init(ServiceContext ctx) { }
            @Override public void execute(ServiceContext ctx) { }
        }
    }
}

=====================

Issue Links

• links to: GitHub Pull Request #3863