What you are seeing in 1.14.3 is a separate bug, that behaves very
similarly. https://issues.apache.org/jira/browse/FLINK-25732
On 20/01/2022 22:11, John Smith wrote:
As per another recent thread. This is still an issue.
On Wed, 19 Jan 2022 at 06:36, Chesnay Schepler <ches...@apache.org> wrote:
This is a serialization bug in Flink, see
https://issues.apache.org/jira/browse/FLINK-24550.
It will be fixed in the upcoming 1.14.3 release.
On 19/01/2022 09:01, Caizhi Weng wrote:
Hi!
To print out gc logs of job manager you can add this
configuration to flink-conf.yaml
env.java.opts.jobmanager: -Xloggc:/tmp/jobmanager-gc.log
-XX:+PrintGCDetails -XX:+PrintGCDateStamps
This will print gc logs to /tmp/jobmanager-gc.log.
I'm not familiar with the garbage collection metrics page. If the
unit of time is ms then gc does not seem to be heavy. However I
would still recommend to print out gc logs for a double check.
John Smith <java.dev....@gmail.com> 于2022年1月19日周三 06:43写道：
I think I may know what is causing the issue... So I have 3
job managers.
1- I Navigated to a non leader UI and submitted a new job...
2- The UI timed out with grey lines
3- Some Internal Server error messages appeared.
4- Going back to the leader UI checking the running jobs, the
job seems to have been submitted and running.
5- Going back to the job manager UI that failed, now shows ok.
And the logs are as follows... And below are the GC metrics
from the UI.
2022-01-18 22:33:24,574 INFO
org.apache.flink.client.deployment.application.executors.EmbeddedExecutor
[] - Job 2297fdac52fa7191afee9ec4ff11c805 is submitted.
2022-01-18 22:33:24,574 INFO
org.apache.flink.client.deployment.application.executors.EmbeddedExecutor
[] - Submitting Job with JobId=2297fdac52fa7191afee9ec4ff11c805.
2022-01-18 22:34:00,618 ERROR
org.apache.flink.runtime.rest.handler.job.JobDetailsHandler
[] - Unhandled exception.
java.util.concurrent.CancellationException: null
at
java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2276)
~[?:1.8.0_312]
at
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInternal(DefaultExecutionGraphCache.java:98)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInfo(DefaultExecutionGraphCache.java:67)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.job.AbstractExecutionGraphHandler.handleRequest(AbstractExecutionGraphHandler.java:81)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.AbstractRestHandler.respondToRequest(AbstractRestHandler.java:83)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.AbstractHandler.respondAsLeader(AbstractHandler.java:195)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.lambda$channelRead0$0(LeaderRetrievalHandler.java:83)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at java.util.Optional.ifPresent(Optional.java:159) [?:1.8.0_312]
at
org.apache.flink.util.OptionalConsumer.ifPresent(OptionalConsumer.java:45)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:80)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:49)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.routed(RouterHandler.java:115)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:94)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:55)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:238)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:71)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_312]
These are the stats displayed on the UI for the garbage
collector...
Advanced
JVM (Heap/Non-Heap) Memory
Type Committed Used Maximum
Heap 2.87 GB 571 MB 2.87 GB
Non-Heap 136 MB 128 MB 744 MB
Outside JVM Memory
Type Count Used Capacity
Direct 33 642 KB 642 KB
Mapped 0 0 B 0 B
Garbage Collection
Collector Count Time
PS_MarkSweep 3 346
PS_Scavenge 83 2772
On Tue, 18 Jan 2022 at 17:15, John Smith
<java.dev....@gmail.com> wrote:
Sorry, unhandled exception.
On Tue, 18 Jan 2022 at 15:16, John Smith
<java.dev....@gmail.com> wrote:
Also that I handled exception is printed in job managers.
On Tue., Jan. 18, 2022, 10:11 a.m. John Smith,
<java.dev....@gmail.com> wrote:
I actually mean the job manager. I run a total of
three job managers for HA.
For example of I click running jobs, it displays
light grey boxes for a while and then top right
corner throws internal server error. But after if
I refresh it's ok I see the list. It seems to
happen on the non leader job manager UIs. Looking
at the UI metric for the job manager doesn't seem
to indicate anything out of the ordinary.
Is there a java 8 command tool that can hook into
the live PID and display GC stats?
On Mon., Jan. 17, 2022, 12:06 a.m. Caizhi Weng,
<tsreape...@gmail.com> wrote:
Hi!
"When I use the UI and just navigate from one
jobmanager ui to the other", I guess you mean
you're talking about task managers instead of
job managers (there is only one job manager
per web ui).
This long pause usually indicates that the
component (no matter task managers or job
manager) you're jumping to is very busy so
that they can't handle web requests. This is
not a healthy state and you should look into
it. The most probable cause is heavy GC. To
determine this you can print GC details to
log and see if there are long GC pauses.
John Smith <java.dev....@gmail.com>
于2022年1月15日周六 09:53写道：
Hi using 1.14.2, running 3 job nodes.
Everything seems to work ok.
When I use the UI and just navigate from
one jobmanager ui to the other, it
sometimes seems to take long or timeout
and I see an "Internal Server Error"
popup on the top right messages.
Looking at the logs I see this, but not
sure it's related...
2022-01-15 00:04:44,925 ERROR
org.apache.flink.runtime.rest.handler.job.JobExceptionsHandler
[] - Unhandled exception.
java.util.concurrent.CancellationException:
null
at
java.util.concurrent.CompletableFuture.cancel(CompletableFuture.java:2276)
~[?:1.8.0_312]
at
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInternal(DefaultExecutionGraphCache.java:98)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.legacy.DefaultExecutionGraphCache.getExecutionGraphInfo(DefaultExecutionGraphCache.java:67)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.job.AbstractExecutionGraphHandler.handleRequest(AbstractExecutionGraphHandler.java:81)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.AbstractRestHandler.respondToRequest(AbstractRestHandler.java:83)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.AbstractHandler.respondAsLeader(AbstractHandler.java:195)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.lambda$channelRead0$0(LeaderRetrievalHandler.java:83)
~[flink-dist_2.12-1.14.2.jar:1.14.2]
at
java.util.Optional.ifPresent(Optional.java:159)
[?:1.8.0_312]
at
org.apache.flink.util.OptionalConsumer.ifPresent(OptionalConsumer.java:45)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:80)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.LeaderRetrievalHandler.channelRead0(LeaderRetrievalHandler.java:49)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.routed(RouterHandler.java:115)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:94)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.handler.router.RouterHandler.channelRead0(RouterHandler.java:55)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:238)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.runtime.rest.FileUploadHandler.channelRead0(FileUploadHandler.java:71)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at
org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
[flink-dist_2.12-1.14.2.jar:1.14.2]
at java.lang.Thread.run(Thread.java:748)
[?:1.8.0_312]
