Hi Matthias, Do you have any suggestions to handle timeout issues when fetching data from a Kafka topic? I am thinking of adding a retry logic into flink job, not sure if this is the right direction.
Thanks again Best regards Rainie On Wed, Mar 3, 2021 at 12:24 AM Matthias Pohl <matth...@ververica.com> wrote: > Hi Rainie, > in general buffer pools being destroyed usually mean that some other > exception occurred that caused the task to fail and in the process of > failure handling the operator-related network buffer is destroyed. That > causes the "java.lang.RuntimeException: Buffer pool is destroyed." in your > case. It looks like you had some timeout problem while fetching data from a > Kafka topic. > > Matthias > > On Tue, Mar 2, 2021 at 10:39 AM Rainie Li <raini...@pinterest.com> wrote: > >> Thanks for checking, Matthias. >> >> I have another flink job which failed last weekend with the same buffer >> pool destroyed error. This job is also running version 1.9. >> Here is the error I found from the task manager log. Any suggestion what >> is the root cause and how to fix it? >> >> 2021-02-28 00:54:45,943 WARN >> org.apache.flink.streaming.runtime.tasks.StreamTask - Error >> while canceling task. >> java.lang.RuntimeException: Buffer pool is destroyed. >> at >> org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:110) >> at >> org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89) >> at >> org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45) >> at >> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:727) >> at >> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:705) >> at >> org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104) >> at >> org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collectWithTimestamp(StreamSourceContexts.java:111) >> at >> org.apache.flink.streaming.connectors.kafka.internals.AbstractFetcher.emitRecordWithTimestamp(AbstractFetcher.java:398) >> at >> com.pinterest.xenon.unified.api191.SynchronousKafkaConsumer191$1.emitRecordWithTimestamp(SynchronousKafkaConsumer191.java:107) >> at >> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.emitRecord(KafkaFetcher.java:185) >> at >> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.runFetchLoop(KafkaFetcher.java:150) >> at >> org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:715) >> -- >> at >> org.apache.flink.runtime.io.network.netty.CreditBasedPartitionRequestClientHandler.channelRead(CreditBasedPartitionRequestClientHandler.java:175) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) >> at >> org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) >> at >> org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:297) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:656) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:591) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:508) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:470) >> at >> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:909) >> at java.lang.Thread.run(Thread.java:748) >> Caused by: >> org.apache.flink.runtime.io.network.partition.ProducerFailedException: >> org.apache.kafka.common.errors.TimeoutException: Timeout expired while >> fetching topic metadata >> at >> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.writeAndFlushNextMessageIfPossible(PartitionRequestQueue.java:221) >> at >> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.enqueueAvailableReader(PartitionRequestQueue.java:107) >> at >> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.userEventTriggered(PartitionRequestQueue.java:170) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:307) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.userEventTriggered(ChannelInboundHandlerAdapter.java:108) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:307) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.ChannelInboundHandlerAdapter.userEventTriggered(ChannelInboundHandlerAdapter.java:108) >> at >> org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.userEventTriggered(ByteToMessageDecoder.java:366) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireUserEventTriggered(AbstractChannelHandlerContext.java:307) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.userEventTriggered(DefaultChannelPipeline.java:1452) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:329) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeUserEventTriggered(AbstractChannelHandlerContext.java:315) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireUserEventTriggered(DefaultChannelPipeline.java:959) >> at >> org.apache.flink.runtime.io.network.netty.PartitionRequestQueue.lambda$notifyReaderNonEmpty$0(PartitionRequestQueue.java:86) >> at >> org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) >> at >> org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) >> at >> org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:474) >> ... 2 more >> Caused by: org.apache.kafka.common.errors.TimeoutException: Timeout >> expired while fetching topic metadata >> >> >> Thanks again! >> Best regards >> Rainie >> >> On Mon, Mar 1, 2021 at 4:38 AM Matthias Pohl <matth...@ververica.com> >> wrote: >> >>> Another question is: The timeout of 48 hours sounds strange. There >>> should have been some other system noticing the connection problem earlier >>> assuming that you have a reasonably low heartbeat interval configured. >>> >>> Matthias >>> >>> On Mon, Mar 1, 2021 at 1:22 PM Matthias Pohl <matth...@ververica.com> >>> wrote: >>> >>>> Thanks for providing this information, Rainie. Are other issues >>>> documented in the logs besides the TimeoutException in the JM logs which >>>> you already shared? For now, it looks like that there was a connection >>>> problem between the TaskManager and the JobManager that caused the shutdown >>>> of the operator resulting in the NetworkBufferPool to be destroyed. For >>>> this scenario I would expect other failures to occur besides the ones you >>>> shared. >>>> >>>> Best, >>>> Matthias >>>> >>>> On Fri, Feb 26, 2021 at 8:28 PM Rainie Li <raini...@pinterest.com> >>>> wrote: >>>> >>>>> Thank you Mattias. >>>>> It’s version1.9. >>>>> >>>>> Best regards >>>>> Rainie >>>>> >>>>> On Fri, Feb 26, 2021 at 6:33 AM Matthias Pohl <matth...@ververica.com> >>>>> wrote: >>>>> >>>>>> Hi Rainie, >>>>>> the network buffer pool was destroyed for some reason. This happens >>>>>> when the NettyShuffleEnvironment gets closed which is triggered when an >>>>>> operator is cleaned up, for instance. Maybe, the timeout in the metric >>>>>> system caused this. But I'm not sure how this is connected. I'm gonna add >>>>>> Chesnay to this conversation hoping that he can give more insights. >>>>>> >>>>>> If I may ask: What Flink version are you using? >>>>>> >>>>>> Thanks, >>>>>> Matthias >>>>>> >>>>>> >>>>>> On Fri, Feb 26, 2021 at 8:39 AM Rainie Li <raini...@pinterest.com> >>>>>> wrote: >>>>>> >>>>>>> Hi All, >>>>>>> >>>>>>> Our flink application kept restarting and it did lots of RPC calls >>>>>>> to a dependency service. >>>>>>> >>>>>>> *We saw this exception from failed task manager log: * >>>>>>> org.apache.flink.streaming.runtime.tasks.ExceptionInChainedOperatorException: >>>>>>> Could not forward element to next operator >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:654) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:612) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:592) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:727) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:705) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:51) >>>>>>> at >>>>>>> com.pinterest.analytics.streaming.logics.ExtractPartnerEventsLogic$$anon$10.flatMap(ExtractPartnerEventsLogic.scala:179) >>>>>>> at >>>>>>> com.pinterest.analytics.streaming.logics.ExtractPartnerEventsLogic$$anon$10.flatMap(ExtractPartnerEventsLogic.scala:173) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.StreamFlatMap.processElement(StreamFlatMap.java:50) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:637) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:612) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:592) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:727) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:705) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.StreamSourceContexts$ManualWatermarkContext.processAndCollectWithTimestamp(StreamSourceContexts.java:310) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.StreamSourceContexts$WatermarkContext.collectWithTimestamp(StreamSourceContexts.java:409) >>>>>>> at >>>>>>> org.apache.flink.streaming.connectors.kafka.internals.AbstractFetcher.emitRecordWithTimestampAndPeriodicWatermark(AbstractFetcher.java:436) >>>>>>> at >>>>>>> org.apache.flink.streaming.connectors.kafka.internals.AbstractFetcher.emitRecordWithTimestamp(AbstractFetcher.java:402) >>>>>>> at >>>>>>> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.emitRecord(KafkaFetcher.java:185) >>>>>>> at >>>>>>> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.runFetchLoop(KafkaFetcher.java:150) >>>>>>> at >>>>>>> org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:715) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:208) >>>>>>> Caused by: java.lang.RuntimeException: Buffer pool is destroyed. >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:110) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:727) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:705) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.TimestampedCollector.collect(TimestampedCollector.java:51) >>>>>>> at >>>>>>> com.pinterest.analytics.streaming.logics.PISLogic$BatchEventsFunction.processElement(PISLogic.scala:203) >>>>>>> at >>>>>>> com.pinterest.analytics.streaming.logics.PISLogic$BatchEventsFunction.processElement(PISLogic.scala:189) >>>>>>> at >>>>>>> org.apache.flink.streaming.api.operators.ProcessOperator.processElement(ProcessOperator.java:66) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:637) >>>>>>> ... 23 more >>>>>>> Caused by: java.lang.IllegalStateException: Buffer pool is destroyed. >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegment(LocalBufferPool.java:239) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBuilderBlocking(LocalBufferPool.java:213) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.partition.ResultPartition.getBufferBuilder(ResultPartition.java:181) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.api.writer.RecordWriter.requestNewBufferBuilder(RecordWriter.java:256) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.api.writer.RecordWriter.getBufferBuilder(RecordWriter.java:249) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.api.writer.RecordWriter.copyFromSerializerToTargetChannel(RecordWriter.java:169) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:154) >>>>>>> at >>>>>>> org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:120) >>>>>>> at >>>>>>> org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:107) >>>>>>> ... 32 more >>>>>>> >>>>>>> *We also saw this exception from Job manager log:* >>>>>>> 2021-02-25 21:32:42,874 ERROR akka.remote.Remoting >>>>>>> - Association to >>>>>>> [akka.tcp://flink-metrics@host:38593] >>>>>>> with UID [-1261564990] irrecoverably failed. Quarantining address. >>>>>>> java.util.concurrent.TimeoutException: Remote system has been silent >>>>>>> for too long. (more than 48.0 hours) >>>>>>> at >>>>>>> akka.remote.ReliableDeliverySupervisor$$anonfun$idle$1.applyOrElse(Endpoint.scala:386) >>>>>>> at akka.actor.Actor$class.aroundReceive(Actor.scala:517) >>>>>>> at >>>>>>> akka.remote.ReliableDeliverySupervisor.aroundReceive(Endpoint.scala:207) >>>>>>> at akka.actor.ActorCell.receiveMessage(ActorCell.scala:592) >>>>>>> at akka.actor.ActorCell.invoke(ActorCell.scala:561) >>>>>>> at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:258) >>>>>>> at akka.dispatch.Mailbox.run(Mailbox.scala:225) >>>>>>> at akka.dispatch.Mailbox.exec(Mailbox.scala:235) >>>>>>> at akka.dispatch.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) >>>>>>> at >>>>>>> akka.dispatch.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) >>>>>>> at >>>>>>> akka.dispatch.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) >>>>>>> at >>>>>>> akka.dispatch.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) >>>>>>> >>>>>>> This app has been running fine for a month. >>>>>>> Any suggestion what could cause the issue? Any suggestions on how to >>>>>>> debug it? >>>>>>> Appreciated all advice. >>>>>>> >>>>>>> Thanks >>>>>>> Best regards >>>>>>> Rainie >>>>>>> >>>>>>
