ConnectException for ManagedConnectionOperations

org.infinispan.commons.CacheException: Unable to start cache loaders
org.infinispan.persistence.spi.PersistenceException: ISPN000527: Maximum startup attempts exceeded for store org.infinispan.persistence.jdbc.stringbased.JdbcStringBasedStore
org.infinispan.persistence.spi.PersistenceException: This might be related to https://jira.jboss.org/browse/ISPN-604
org.h2.jdbc.JdbcSQLNonTransientConnectionException: Connection is broken: "java.net.ConnectException: Connection refused (Connection refused): 127.0.0.1:20000" [90067-199]
java.net.ConnectException: Connection refused (Connection refused)
	at org.infinispan.client.hotrod.impl.protocol.Codec20.checkForErrorsInResponseStatus(Codec20.java:337)
	at org.infinispan.client.hotrod.impl.protocol.Codec20.readHeader(Codec20.java:176)
	at org.infinispan.client.hotrod.impl.transport.netty.HeaderDecoder.decode(HeaderDecoder.java:139)