queue sometimes creates empty .wal files and fails to initialize when emtpy .was files exist

[sergeydub]

This is the code that I use to init file queue:

		dataFileQ = FileQueue.<Tsv>batched()
				.folder(QUEUE_FOLDER)
				.restoreFromDisk(true)
				.limit(QueueLimit.<Tsv>queueLength()
						.length(getFileQueueLength())
						.handler(new BiConsumer<Tsv, FileQueue<Tsv>>() {
							
							@Override
							public void accept(Tsv t, FileQueue<Tsv> u) {
								// do nothing for now
							}
						})
						.build())
				.wal(WalFilesConfig.builder()
						.maxCount(getFileQueueWalMaxCount())
						.build())
				.batchSize(getFileQueueBatchSize())
				.build();

This is the exception that I am getting:

14 Aug 2024 11:11:45:271 WARN [com.modius.framework.service.GenericService] - error starting service
java.nio.BufferUnderflowException: null
at java.nio.Buffer.nextGetIndex(Buffer.java:721) ~[?:?]
at java.nio.HeapByteBuffer.getInt(HeapByteBuffer.java:498) ~[?:?]
at org.infobip.lib.popout.batched.QueueSerializer.getQueueLength(QueueSerializer.java:78) ~[popout-2.1.1.jar:?]
at org.infobip.lib.popout.batched.BatchedFileQueue.(BatchedFileQueue.java:85) ~[popout-2.1.1.jar:?]
at org.infobip.lib.popout.batched.BatchedFileQueueBuilder.createQueue(BatchedFileQueueBuilder.java:56) ~[popout-2.1.1.jar:?]
at org.infobip.lib.popout.FileQueue$Builder.build(FileQueue.java:298) ~[popout-2.1.1.jar:?]
at com.modius.em.data.Dispatcher.start(Dispatcher.java:178) ~[classes/:?]
at com.modius.em.data.DataProcessorService.doStart(DataProcessorService.java:158) ~[classes/:?]
at com.modius.framework.service.GenericService.start(GenericService.java:66) ~[classes/:?]
at com.modius.framework.service.ServiceManager$ServiceRunner.run(ServiceManager.java:342) ~[classes/:?]
at java.lang.Thread.run(Thread.java:1583) [?:?]