java.util.ConcurrentModificationException: null
at java.util.HashMap.computeIfAbsent(HashMap.java:1221) ~[?:?]
at cz.o2.proxima.direct.server.metrics.Metrics.sizeForAttribute(Metrics.java:108) ~[proxima-ingest-server-grpc-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.server.ReplicationController$ReplicationLogObserver.onNext(ReplicationController.java:119) ~[proxima-ingest-server-grpc-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.server.ReplicationController$ReplicationLogObserver.onNext(ReplicationController.java:97) ~[proxima-ingest-server-grpc-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.core.commitlog.RetryableLogObserver.onNext(RetryableLogObserver.java:68) ~[proxima-direct-core-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.core.commitlog.RetryableLogObserver.onNext(RetryableLogObserver.java:30) ~[proxima-direct-core-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.io.kafka.ElementConsumers$OnlineConsumer.consumeWithConfirm(ElementConsumers.java:128) ~[proxima-direct-io-kafka-0.14-SNAPSHOT.jar:?]
at cz.o2.proxima.direct.io.kafka.KafkaLogReader.lambda$submitConsumerWithObserver$6(KafkaLogReader.java:476) ~[proxima-direct-io-kafka-0.14-SNAPSHOT.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) ~[?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.lang.Thread.run(Thread.java:840) ~[?:?]