Wrong message size assertion in Pulsar's batch message

java.lang.RuntimeException: One or more fetchers have encountered exception
at nextMessageIdorg.apache.flink.connector.base.source.reader.fetcher.SplitFetcherManager.checkErrors(SplitFetcherManager.java:225)
at org.apache.flink.connector.base.source.reader.SourceReaderBase.getNextFetch(SourceReaderBase.java:169)
at org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:130)
at org.apache.flink.connector.pulsar.source.reader.source.PulsarOrderedSourceReader.pollNext(PulsarOrderedSourceReader.java:109)
at org.apache.flink.streaming.api.operators.SourceOperator.emitNext(SourceOperator.java:385)
at org.apache.flink.streaming.runtime.io.StreamTaskSourceInput.emitNext(StreamTaskSourceInput.java:68)
at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:65)
at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:519)
at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:203)
at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:804)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:753)
at org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:948)
at org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:927)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:741)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563)
at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.RuntimeException: SplitFetcher thread 1 received unexpected exception while polling the records
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:150)
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.run(SplitFetcher.java:105)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
... 1 more
Suppressed: java.lang.RuntimeException: SplitFetcher thread 0 received unexpected exception while polling the records
... 7 more
Caused by: java.lang.IllegalArgumentException: We only support normal message id currently.
at org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:138)
at org.apache.flink.connector.pulsar.source.enumerator.cursor.MessageIdUtils.unwrapMessageId(MessageIdUtils.java:61)
at org.apache.flink.connector.pulsar.source.enumerator.cursor.MessageIdUtils.nextMessageId(MessageIdUtils.java:43)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarOrderedPartitionSplitReader.beforeCreatingConsumer(PulsarOrderedPartitionSplitReader.java:94)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarPartitionSplitReaderBase.handleSplitsChanges(PulsarPartitionSplitReaderBase.java:160)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarOrderedPartitionSplitReader.handleSplitsChanges(PulsarOrderedPartitionSplitReader.java:52)
at org.apache.flink.connector.base.source.reader.fetcher.AddSplitsTask.run(AddSplitsTask.java:51)
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:142)
... 6 more
Caused by: java.lang.IllegalArgumentException: We only support normal message id currently.
at org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:138)
at org.apache.flink.connector.pulsar.source.enumerator.cursor.MessageIdUtils.unwrapMessageId(MessageIdUtils.java:61)
at org.apache.flink.connector.pulsar.source.enumerator.cursor.MessageIdUtils.nextMessageId(MessageIdUtils.java:43)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarOrderedPartitionSplitReader.beforeCreatingConsumer(PulsarOrderedPartitionSplitReader.java:94)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarPartitionSplitReaderBase.handleSplitsChanges(PulsarPartitionSplitReaderBase.java:160)
at org.apache.flink.connector.pulsar.source.reader.split.PulsarOrderedPartitionSplitReader.handleSplitsChanges(PulsarOrderedPartitionSplitReader.java:52)
at org.apache.flink.connector.base.source.reader.fetcher.AddSplitsTask.run(AddSplitsTask.java:51)
at org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:142)
... 6 more