Hello,
I just started testing Flink 1.14.0 and noticed some weird behavior. This is
for a Flink cluster with zookeeper for HA and two job managers (one leader, one
backup). The UI on the leader works fine. The UI on the other job manager does
not load any job-specific data. Same applies to the REST interface. If I
requests job data from /v1/jobs/{jobId}, I get the expected response on the
leader but on the other job manager, I only get an exception stack trace:
{"errors":["Internal server error.","<Exception on server
side:\njava.util.concurrent.CancellationException\n\tat
java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2276)\n\tat
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInternal(DefaultExecutionGraphCache.java:98)\n\tat
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInfo(DefaultExecutionGraphCache.java:67)\n\tat
org.apache.flink.runtime.rest.handler.job.AbstractExecutionGraphHandler.handleRequest(AbstractExecutionGraphHandler.java:81)\n\tat
org.apache.flink.runtime.rest.handler.AbstractRestHandler.respondToRequest(AbstractRestHandler.java:83)\n\tat
org.apache.flink.runtime.rest.handler.AbstractHandler.respondAsLeader(AbstractHandler.java:195)\n\tat
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.lambda$channelRead0$0(LeaderRetrievalHandler.java:83)\n\tat
java.util.Optional.ifPresent(Optional.java:159)\n\tat
org.apache.flink.util.OptionalConsumer.ifPresent(OptionalConsumer.java:45)\n\tat
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:80)\n\tat
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:49)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.runtime.rest.handler.router.RouterHandler.routed(RouterHandler.java:115)\n\tat
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:94)\n\tat
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:55)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:238)\n\tat
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:71)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1368)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1234)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1280)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:507)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:446)\n\tat
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)\n\tat
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)\n\tat
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)\n\tat
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)\n\tat
java.lang.Thread.run(Thread.java:748)\n\nEnd of exception on server side>"]}
Peter Westermann
Team Lead – Realtime Analytics
[cidimage001.jpg@01D78D4C.C00AC080]
peter.westerm...@genesys.com<mailto:peter.westerm...@genesys.com>
[cidimage001.jpg@01D78D4C.C00AC080]
[cidimage002.jpg@01D78D4C.C00AC080]<http://www.genesys.com/>
