"core connection adder" #748 daemon prio=5 os_prio=0 tid=0x00007f501001a000 nid=0x72ae waiting for monitor entry [0x00007f4fe44b6000] java.lang.Thread.State: BLOCKED (on object monitor) at java.util.Hashtable.size(Hashtable.java:235) - waiting to lock <0x0000000081a3e9e8> (a java.util.Properties) at java.util.Hashtable.equals(Hashtable.java:801) - locked <0x000000008fdaf9c8> (a java.util.Properties) at java.util.Objects.equals(Objects.java:59) at org.mariadb.jdbc.util.Options.equals(Options.java:449) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin$KeyCache.equals(AwsIamCredentialPlugin.java:141) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:940) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:92) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:50) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:516) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:498) at org.mariadb.jdbc.internal.protocol.AuroraProtocol.loop(AuroraProtocol.java:170) at org.mariadb.jdbc.internal.failover.impl.AuroraListener.reconnectFailedConnection(AuroraListener.java:213) at org.mariadb.jdbc.internal.failover.impl.MastersReplicasListener.initializeConnection(MastersReplicasListener.java:176) at org.mariadb.jdbc.internal.failover.FailoverProxy.(FailoverProxy.java:120) at org.mariadb.jdbc.internal.util.Utils.retrieveProxy(Utils.java:608) at org.mariadb.jdbc.MariaDbConnection.newConnection(MariaDbConnection.java:150) at org.mariadb.jdbc.Driver.connect(Driver.java:89) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476) at com.zaxxer.hikari.pool.HikariPool.access$100(HikariPool.java:71) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:726) at com.zaxxer.hikari.pool.HikariPool$PoolEntryCreator.call(HikariPool.java:712) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) "MariaDb-failover-1" #20 daemon prio=5 os_prio=0 tid=0x00007f4ff6c19000 nid=0x1167 waiting for monitor entry [0x00007f4ff1350000] java.lang.Thread.State: BLOCKED (on object monitor) at java.util.Hashtable.size(Hashtable.java:235) - waiting to lock <0x0000000081a3e9e8> (a java.util.Properties) at java.util.Hashtable.equals(Hashtable.java:801) - locked <0x0000000081ef42b0> (a java.util.Properties) at java.util.Objects.equals(Objects.java:59) at org.mariadb.jdbc.util.Options.equals(Options.java:449) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin$KeyCache.equals(AwsIamCredentialPlugin.java:141) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:940) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:92) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:50) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:516) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:498) at org.mariadb.jdbc.internal.protocol.AuroraProtocol.loop(AuroraProtocol.java:170) at org.mariadb.jdbc.internal.failover.impl.AuroraListener.reconnectFailedConnection(AuroraListener.java:213) at org.mariadb.jdbc.internal.failover.thread.FailoverLoop.doRun(FailoverLoop.java:85) at org.mariadb.jdbc.internal.failover.thread.TerminableRunnable.run(TerminableRunnable.java:83) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) "MariaDb-failover-2" #76 daemon prio=5 os_prio=0 tid=0x00007f5005a00000 nid=0x1239 waiting for monitor entry [0x00007f5030a9e000] java.lang.Thread.State: BLOCKED (on object monitor) at java.util.Hashtable.size(Hashtable.java:235) - waiting to lock <0x0000000081a3e9e8> (a java.util.Properties) at java.util.Hashtable.equals(Hashtable.java:801) - locked <0x0000000081e9a328> (a java.util.Properties) at java.util.Objects.equals(Objects.java:59) at org.mariadb.jdbc.util.Options.equals(Options.java:449) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin$KeyCache.equals(AwsIamCredentialPlugin.java:141) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:940) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:92) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:50) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:516) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:498) at org.mariadb.jdbc.internal.protocol.AuroraProtocol.loop(AuroraProtocol.java:170) at org.mariadb.jdbc.internal.failover.impl.AuroraListener.reconnectFailedConnection(AuroraListener.java:213) at org.mariadb.jdbc.internal.failover.thread.FailoverLoop.doRun(FailoverLoop.java:85) at org.mariadb.jdbc.internal.failover.thread.TerminableRunnable.run(TerminableRunnable.java:83) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) "MariaDb-failover-3" #77 daemon prio=5 os_prio=0 tid=0x00007f5005a01000 nid=0x123a waiting for monitor entry [0x00007f5030b9f000] java.lang.Thread.State: BLOCKED (on object monitor) at java.util.Hashtable.size(Hashtable.java:235) - waiting to lock <0x0000000081ef42b0> (a java.util.Properties) at java.util.Hashtable.equals(Hashtable.java:801) - locked <0x0000000081a3e9e8> (a java.util.Properties) at java.util.Objects.equals(Objects.java:59) at org.mariadb.jdbc.util.Options.equals(Options.java:449) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin$KeyCache.equals(AwsIamCredentialPlugin.java:141) at java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:940) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:92) at org.mariadb.jdbc.credential.aws.AwsIamCredentialPlugin.get(AwsIamCredentialPlugin.java:50) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.createConnection(AbstractConnectProtocol.java:516) at org.mariadb.jdbc.internal.protocol.AbstractConnectProtocol.connect(AbstractConnectProtocol.java:498) at org.mariadb.jdbc.internal.protocol.AuroraProtocol.loop(AuroraProtocol.java:170) at org.mariadb.jdbc.internal.failover.impl.AuroraListener.reconnectFailedConnection(AuroraListener.java:213) at org.mariadb.jdbc.internal.failover.thread.FailoverLoop.doRun(FailoverLoop.java:85) at org.mariadb.jdbc.internal.failover.thread.TerminableRunnable.run(TerminableRunnable.java:83) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)