platania reported a situation in SB-02 (OOM deployments) which causes policy controllers to stop processing events.  ONSETs events were received but none processed by the PDP-D.     Going thorugh the logs and inspecting the source code, it seems that the culprit is in the feature-pooling added new in Beijing.   It seems that the feature-pooling calls the controller.stop() when there’s some issue with the channel.   This in turn leaves the amsterdam controller stopped and never goes back to life, which explains the situation that Marco was seeing.    ONSETs were going to drools-pdp-0, were discarded, and the other drools-pdp-1 did not take over.   Actually, his lab was stuck for many hours until policy was restarted.   The implementation has to be reviewed to avoid these drastic side effects.    This seems to be it will be a not uncommon situation in a k8s environment.

Code that stops the controller :

 

    @Override

    public CountDownLatch internalTopicFailed() {

        logger.error("communication failed for topic {}", topic);

 

        ..

        new Thread(() -> {

            controller.stop();

            latch.countDown();

        }).start();

       ..

    }

 

+State of amsterdam controller in drools-pdp-0 (note that the controller is false):
+
HTTP/1.1 200 OK

Content-Length: 2247

Content-Type: application/json

Date: Thu, 31 May 2018 20:22:51 GMT

Server: Jetty(9.3.20.v20170531)

 

{

    "alive": false,

    "drools": {

        "alive": false,

        "artifactId": "policy-amsterdam-rules",

        "brained": true,

        "groupId": "org.onap.policy-engine.drools.amsterdam",

        "locked": false,

        "modelClassLoaderHash": 651347276,

        "recentSinkEvents": [],

        "recentSourceEvents": [],

        "sessionCoordinates": [

            "org.onap.policy-engine.drools.amsterdam:policy-amsterdam-rules:0.4.0:closedloop-amsterdam"

        ],

        "sessions": [

            "closedloop-amsterdam"

        ],

        "version": "0.4.0"

    },

    "locked": false,

    "name": "amsterdam",

    "topicSinks": [

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "locked": false,

            "partitionKey": "ad654ed3-78f1-4fc1-bb41-5a554cbda1a8",

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "APPC-CL",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        },

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "locked": false,

            "partitionKey": "375fe28b-d575-40ba-9812-e1e8591a6079",

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "APPC-LCM-READ",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        },

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "locked": false,

            "partitionKey": "be167d60-09e1-40d3-a8e1-894955e293fa",

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "POLICY-CL-MGT",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        }

    ],

    "topicSources": [

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "consumerGroup": "dcae.policy.shared",

            "consumerInstance": "dev-drools-1",

            "fetchLimit": 100,

            "fetchTimeout": 15000,

            "locked": false,

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "unauthenticated.DCAE_CL_OUTPUT",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        },

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "consumerGroup": "c602f0c9-f6dd-48e0-8524-2d560dae8998",

            "consumerInstance": "dev-drools-1",

            "fetchLimit": 100,

            "fetchTimeout": 15000,

            "locked": false,

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "APPC-CL",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        },

        {

            "alive": false,

            "allowSelfSignedCerts": false,

            "apiKey": "",

            "apiSecret": "",

            "consumerGroup": "acadf51f-1519-49cc-b923-551548bc8619",

            "consumerInstance": "dev-drools-1",

            "fetchLimit": 100,

            "fetchTimeout": 15000,

            "locked": false,

            "recentEvents": [],

            "servers": [

                "message-router"

            ],

            "topic": "APPC-LCM-WRITE",

            "topicCommInfrastructure": "UEB",

            "useHttps": false

        }

    ]

}

 

Logs (see debug.2018-05-30.0.log at 10.12.5.123:

 

9991 [2018-05-30T16:17:18.523+00:00|INFO|CambriaConsumerImpl|UEB-source-POOLING] UEB GET /events/POOLING/a94d13ce-8e1f-4056-a7d2-b0c49195abfd/dev-drools-0?timeout=15000&limit=100&filter=%7B%22class%22%3A%22Or%22%2C%22filters%22%3A%5B%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22channel%22%2C%22value%22%3A%22_admin%22%7D%2C%7B%22class%22%3A%22And%22%2C%22filters%22%3A%5B%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22channel%22%2C%22value%22%3A%220d67cebb-0b80-41bf-b378-b7f4466c997e%22%7D%2C%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22timestampMs%22%2C%22value%22%3A%221527696929094%22%7D%5D%7D%5D%7D

  

   9992 [2018-05-30T16:17:18.523+00:00|INFO|HttpClient|UEB-source-POOLING] GET http://message-router:3904/events/POOLING/a94d13ce-8e1f-4056-a7d2-b0c49195abfd/dev-drools-0?timeout=15000&limit=100&filter=%7B%22class%22%3A%22Or%22%2C%22filters%22%3A%5B%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22channel%22%2C%22value%22%3A%22_admin%22%7D%2C%7B%22class%22%3A%22And%22%2C%22filters%22%3A%5B%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22channel%22%2C%22value%22%3A%220d67cebb-0b80-41bf-b378-b7f4466c997e%22%7D%2C%7B%22class%22%3A%22Equals%22%2C%22field%22%3A%22timestampMs%22%2C%22value%22%3A%221527696929094%22%7D%5D%7D%5D%7D (anonymous) ...

  

   10216 [2018-05-30T16:17:33.290+00:00|ERROR|PoolingManagerImpl|pool-9-thread-1] communication failed for topic POOLING

  

  10217 [2018-05-30T16:17:33.290+00:00|INFO|AggregatedPolicyController|Thread-51] AggregatedPolicyController [name=amsterdam, alive=true, locked=false, droolsController=NullDroolsController []]: stop

 

  10218 [2018-05-30T16:17:33.291+00:00|INFO|BusConsumer$CambriaConsumerWrapper|pool-9-thread-1] CambriaConsumerWrapper [fetchTimeout=15000]: setting DMAAP server-side filter: {"class":"Or","filters":[\{"class":"Equals","field":"channel","value":"_admin"},\{"class":"Equals","field":"channel","value":"0d67cebb-0b80-41bf-b378-b7f4466c997e"}]}

  10219 [2018-05-30T16:17:33.293+00:00|INFO|State|pool-9-thread-1] entered InactiveState for topic POOLING

 

  10220 [2018-05-30T16:17:33.293+00:00|INFO|BusConsumer$CambriaConsumerWrapper|Thread-51] CambriaConsumerWrapper [fetchTimeout=15000]: setting DMAAP server-side filter: {"class":"Or","filters":[\{"class":"Equals","field":"channel","value":"_admin"},\{"class":"Equals","field":"channel","value":"0d67cebb-0b80-41bf-b378-b7f4466c997e"}]}

 

  10221 [2018-05-30T16:17:33.296+00:00|INFO|State|Thread-51] entered IdleState for topic POOLING

 

  10222 [2018-05-30T16:17:33.296+00:00|INFO|DmaapManager|Thread-51] stop consuming from topic POOLING

 

  10223 [2018-05-30T16:17:33.296+00:00|INFO|TopicBase|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=a94d13ce-8e1f-4056-a7d2-b0c49195abfd, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-POOLING,5,main], topicListeners=1, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=POOLING, #recentEvents=10, locked=false, #topicListeners=1]]]: unregistering org.onap.policy.drools.pooling.PoolingManagerImpl@43599640

 

  10224 [2018-05-30T16:17:33.296+00:00|INFO|InlineBusTopicSink|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=a94d13ce-8e1f-4056-a7d2-b0c49195abfd, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-POOLING,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=POOLING, #recentEvents=10, locked=false, #topicListeners=0]]]: stopping

 

  10225 [2018-05-30T16:17:33.296+00:00|INFO|PoolingManagerImpl|Thread-51] publish Offline to _admin on topic POOLING

 

    10225 [2018-05-30T16:17:33.296+00:00|INFO|PoolingManagerImpl|Thread-51] publish Offline to _admin on topic POOLING

  10226 [2018-05-30T16:17:33.297+00:00|INFO|TopicBase|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=dcae.policy.shared, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-unauthenticated.DCAE_CL_OUTPUT,5,main], topicListeners=1, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=unauthenticated.DCAE_CL_OUTPUT, #recentEvents=0, locked=false, #topicListeners=1]]]: unregistering AggregatedPolicyController [name=amsterdam, alive=false, locked=false, droolsController=NullDroolsController []]

  10227 [2018-05-30T16:17:33.297+00:00|INFO|InlineBusTopicSink|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=dcae.policy.shared, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-unauthenticated.DCAE_CL_OUTPUT,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=unauthenticated.DCAE_CL_OUTPUT, #recentEvents=0, locked=false, #topicListeners=0]]]: stopping

  10228 [2018-05-30T16:17:33.297+00:00|INFO|TopicBase|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=ce3c4088-f788-45e3-80d9-fa251f064341, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-APPC-CL,5,main], topicListeners=1, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-CL, #recentEvents=0, locked=false, #topicListeners=1]]]: unregistering AggregatedPolicyController [name=amsterdam, alive=false, locked=false, droolsController=NullDroolsController []]

  10229 [2018-05-30T16:17:33.297+00:00|INFO|InlineBusTopicSink|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=ce3c4088-f788-45e3-80d9-fa251f064341, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-APPC-CL,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-CL, #recentEvents=0, locked=false, #topicListeners=0]]]: stopping

  10230 [2018-05-30T16:17:33.297+00:00|INFO|TopicBase|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=94d49b6c-6461-49e0-b479-4dd0483b124e, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-APPC-LCM-WRITE,5,main], topicListeners=1, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-LCM-WRITE, #recentEvents=0, locked=false, #topicListeners=1]]]: unregistering AggregatedPolicyController [name=amsterdam, alive=false, locked=false, droolsController=NullDroolsController []]

  10231 [2018-05-30T16:17:33.297+00:00|INFO|InlineBusTopicSink|Thread-51] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=94d49b6c-6461-49e0-b479-4dd0483b124e, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=CambriaConsumerWrapper [fetchTimeout=15000], alive=true, locked=false, uebThread=Thread[UEB-source-APPC-LCM-WRITE,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-LCM-WRITE, #recentEvents=0, locked=false, #topicListeners=0]]]: stopping

 

    10232 [2018-05-30T16:17:33.672+00:00|INFO|HttpClient|UEB-source-POOLING]      --> HTTP/1.1 200 OK

  10233 [2018-05-30T16:17:33.672+00:00|INFO|InlineBusTopicSink|UEB-source-POOLING] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=a94d13ce-8e1f-4056-a7d2-b0c49195abfd, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=null, alive=false, locked=false, uebThread=Thread[UEB-source-POOLING,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=POOLING, #recentEvents=10, locked=false, #topicListeners=0]]]: exiting thread

 

    10235 [2018-05-30T16:17:34.309+00:00|WARN|HostSelector|pool-4-thread-1] All hosts were blacklisted; reverting to full set of hosts.

  10236 [2018-05-30T16:17:34.309+00:00|INFO|HttpClient|pool-4-thread-1] POST http://message-router:3904/events/POOLING (anonymous) ...

  10237 [2018-05-30T16:17:36.298+00:00|INFO|DmaapManager|Thread-51] stop publishing to topic POOLING

  10238 [2018-05-30T16:17:37.960+00:00|INFO|InlineBusTopicSink|UEB-source-unauthenticated.DCAE_CL_OUTPUT] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=dcae.policy.shared, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=null, alive=false, locked=false, uebThread=Thread[UEB-source-unauthenticated.DCAE_CL_OUTPUT,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=unauthenticated.DCAE_CL_OUTPUT, #recentEvents=0, locked=false, #topicListeners=0]]]: exiting thread

  10239 [2018-05-30T16:17:38.020+00:00|INFO|InlineBusTopicSink|UEB-source-APPC-CL] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=ce3c4088-f788-45e3-80d9-fa251f064341, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=null, alive=false, locked=false, uebThread=Thread[UEB-source-APPC-CL,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-CL, #recentEvents=0, locked=false, #topicListeners=0]]]: exiting thread

  10240 [2018-05-30T16:17:38.028+00:00|INFO|InlineBusTopicSink|UEB-source-APPC-LCM-WRITE] SingleThreadedUebTopicSource [getTopicCommInfrastructure()=UEB, toString()=SingleThreadedBusTopicSource [consumerGroup=94d49b6c-6461-49e0-b479-4dd0483b124e, consumerInstance=dev-drools-0, fetchTimeout=15000, fetchLimit=100, consumer=null, alive=false, locked=false, uebThread=Thread[UEB-source-APPC-LCM-WRITE,5,main], topicListeners=0, toString()=BusTopicBase [apiKey=, apiSecret=, useHttps=false, allowSelfSignedCerts=false, toString()=TopicBase servers=[message-router], topic=APPC-LCM-WRITE, #recentEvents=0, locked=false, #topicListeners=0]]]: exiting thread

  10241 [2018-05-30T16:17:43.820+00:00|INFO|HttpClient|UEB-source-PDPD-CONFIGURATION]   --> HTTP/1.1 200 OK

  10242 [2018-05-30T16:17:43.820+00:00|INFO|CambriaConsumerImpl|UEB-source-PDPD-CONFIGURATION] UEB GET /events/PDPD-CONFIGURATION/52035527-511e-4385-9ba6-dacf63d6b335/dev-drools-0?timeout=15000&limit=100

  10243 [2018-05-30T16:17:43.820+00:00|INFO|HttpClient|UEB-source-PDPD-CONFIGURATION] GET http://message-router:3904/events/PDPD-CONFIGURATION/52035527-511e-4385-9ba6-dacf63d6b335/dev-drools-0?timeout=15000&limit=100 (anonymous) ...

 

 

…