MissingFormatArgumentException thrown by PreferConsistencyStrategy

Exception thrown due to line 197 in PreferConsistencyStrategy.java

2015-08-03 10:30:38,873 ERROR Unable to format msg: After merge, cache %s has recovered and is entering available mode java.util.MissingFormatArgumentException: Format specifier '%s'
at java.util.Formatter.format(Formatter.java:2519)
at java.util.Formatter.format(Formatter.java:2455)
at java.lang.String.format(String.java:2928)
at org.apache.logging.log4j.message.StringFormattedMessage.formatMessage(StringFormattedMessage.java:88)
at org.apache.logging.log4j.message.StringFormattedMessage.getFormattedMessage(StringFormattedMessage.java:60)
at org.apache.logging.log4j.core.pattern.MessagePatternConverter.format(MessagePatternConverter.java:68)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:36)
at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:196)
at org.apache.logging.log4j.core.layout.PatternLayout.toSerializable(PatternLayout.java:55)
at org.apache.logging.log4j.core.layout.AbstractStringLayout.toByteArray(AbstractStringLayout.java:71)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:108)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:99)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:430)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:409)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:412)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:367)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:112)
at org.jboss.logging.Log4j2Logger.doLogf(Log4j2Logger.java:66)
at org.jboss.logging.Logger.logf(Logger.java:2445)
at org.jboss.logging.DelegatingBasicLogger.debugf(DelegatingBasicLogger.java:344)
at org.infinispan.partitionhandling.impl.PreferConsistencyStrategy.onPartitionMerge(PreferConsistencyStrategy.java:198)
at org.infinispan.topology.ClusterCacheStatus.doMergePartitions(ClusterCacheStatus.java:509)
at org.infinispan.topology.ClusterTopologyManagerImpl$2.call(ClusterTopologyManagerImpl.java:383)
at org.infinispan.topology.ClusterTopologyManagerImpl$2.call(ClusterTopologyManagerImpl.java:380)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.infinispan.executors.SemaphoreCompletionService$QueueingTask.runInternal(SemaphoreCompletionService.java:173)
at org.infinispan.executors.SemaphoreCompletionService$QueueingTask.run(SemaphoreCompletionService.java:151)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)