[
https://issues.apache.org/jira/browse/FLINK-7756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16384703#comment-16384703
]
tarun razdan commented on FLINK-7756:
-------------------------------------
Hi [~aljoscha] , Hope you are having a good weekend. Now it's working but
still, we are testing and will confirm once we finish the testing with some GB
of state.
Some of the findings:
1. Downloaded flink from [http://flink.apache.org/downloads.html]. Tried
running your application
[https://github.com/aljoscha/Flink_CEP_Example/blob/master/build.sbt] and my
example application
[https://github.com/tarunrazdan/Flink_CEP_Example|http://example.com/] and it
ran successfully. But the same code didn't run on the flink build with HDP by
source using the command
{code:java}
mvn clean install -DskipTests -Dmaven.javadoc.skip=true -Dcheckstyle.skip=true
-Dscala.version=2.11.7 -Pvendor-repos -Dhadoop.version=2.7.3.2.6.2.0-205
{code}
2. Then we tried our Original Application on downloaded flink and it didn't
work. For running it on the above setup, we have tried some changes in the
build.sbt file and it started working. We have removed "provided" so all libs
will be included in Uber jar. We had to include two assembly options to make it
successfully built.
Original build.sbt
{code:java}
resolvers in ThisBuild ++= Seq(Resolver.mavenLocal)
name := "app_name"
version := "0.2"
organization := "dm.sdm.package"
scalaVersion in ThisBuild := "2.11.7"
val flinkVersion = "1.4.1"
val flinkDependencies = Seq(
"org.slf4j" % "slf4j-log4j12" % "1.7.21",
"org.apache.flink" %% "flink-scala" % flinkVersion % "provided",
"org.apache.flink" %% "flink-streaming-scala" % flinkVersion % "provided",
//"org.apache.flink" %% "flink-table" % flinkVersion,
"org.apache.flink" %% "flink-cep-scala" % flinkVersion % "compile",
"org.apache.flink" %% "flink-connector-kafka-0.10" % flinkVersion,
"org.apache.flink" %% "flink-connector-filesystem" % flinkVersion,
"org.apache.flink" %% "flink-statebackend-rocksdb" % flinkVersion %
"provided",
"org.apache.flink" %% "flink-connector-cassandra" % flinkVersion,
"org.apache.flink" % "flink-shaded-hadoop2" % flinkVersion % "provided",
"org.json4s" %% "json4s-jackson" % "3.5.3",
"com.sanoma.cda" %% "maxmind-geoip2-scala" % "1.5.4",
"org.http4s" %% "http4s-dsl" % "0.15.13",
"org.http4s" %% "http4s-blaze-client" % "0.15.13",
"com.googlecode.libphonenumber" % "libphonenumber" % "8.8.11")
lazy val root = (project in file(".")).
settings(
libraryDependencies ++= flinkDependencies
)
mainClass in assembly := Some("dm.sdm.package.Job")
// make run command include the provided dependencies
run in Compile := Defaults.runTask(fullClasspath in Compile, mainClass in
(Compile, run), runner in (Compile, run))
// exclude Scala library from assembly
assemblyOption in assembly := (assemblyOption in
assembly).value.copy(includeScala = false)
//assemblyMergeStrategy in assembly := {
// case "META-INF/io.netty.versions.properties" => MergeStrategy.first
// case x =>
// val oldStrategy = (assemblyMergeStrategy in assembly).value
// oldStrategy(x)
//}
{code}
Changed build.sbt
{code:java}
resolvers in ThisBuild ++= Seq(Resolver.mavenLocal)
name := "app_name"
version := "0.2"
organization := "dm.sdm.package"
scalaVersion in ThisBuild := "2.11.7"
val flinkVersion = "1.4.1"
val flinkDependencies = Seq(
"org.slf4j" % "slf4j-log4j12" % "1.7.21",
"org.apache.flink" %% "flink-scala" % flinkVersion,
"org.apache.flink" %% "flink-streaming-scala" % flinkVersion,
//"org.apache.flink" %% "flink-table" % flinkVersion,
"org.apache.flink" %% "flink-cep-scala" % flinkVersion,
"org.apache.flink" %% "flink-connector-kafka-0.10" % flinkVersion,
"org.apache.flink" %% "flink-connector-filesystem" % flinkVersion,
"org.apache.flink" %% "flink-statebackend-rocksdb" % flinkVersion,
"org.apache.flink" %% "flink-connector-cassandra" % flinkVersion,
"org.apache.flink" % "flink-shaded-hadoop2" % flinkVersion,
"org.json4s" %% "json4s-jackson" % "3.5.3",
"com.sanoma.cda" %% "maxmind-geoip2-scala" % "1.5.4",
"org.http4s" %% "http4s-dsl" % "0.15.13",
"org.http4s" %% "http4s-blaze-client" % "0.15.13",
"com.googlecode.libphonenumber" % "libphonenumber" % "8.8.11")
lazy val root = (project in file(".")).
settings(
libraryDependencies ++= flinkDependencies
)
mainClass in assembly := Some("dm.sdm.package.Job")
// make run command include the provided dependencies
run in Compile := Defaults.runTask(fullClasspath in Compile, mainClass in
(Compile, run), runner in (Compile, run))
// exclude Scala library from assembly
assemblyOption in assembly := (assemblyOption in
assembly).value.copy(includeScala = false)
assemblyMergeStrategy in assembly := {
case "META-INF/io.netty.versions.properties" => MergeStrategy.first
case "log4j.properties" => MergeStrategy.last
case x =>
val oldStrategy = (assemblyMergeStrategy in assembly).value
oldStrategy(x)
}
{code}
3. Just a quick question, what is the difference between "Without bundled
Hadoop" or "with Hadoop"? Do we have to use without hadoop distribution as we
are already passing hadoop configuration in flink_conf file ?
Thanks Again for support !!
> RocksDB state backend Checkpointing (Async and Incremental) is not working
> with CEP.
> -------------------------------------------------------------------------------------
>
> Key: FLINK-7756
> URL: https://issues.apache.org/jira/browse/FLINK-7756
> Project: Flink
> Issue Type: Sub-task
> Components: CEP, State Backends, Checkpointing, Streaming
> Affects Versions: 1.4.0, 1.3.2
> Environment: Flink 1.3.2, Yarn, HDFS, RocksDB backend
> Reporter: Shashank Agarwal
> Assignee: Aljoscha Krettek
> Priority: Blocker
> Fix For: 1.5.0, 1.4.1
>
> Attachments: jobmanager.log, jobmanager_without_cassandra.log,
> taskmanager.log, taskmanager_without_cassandra.log
>
>
> When i try to use RocksDBStateBackend on my staging cluster (which is using
> HDFS as file system) it crashes. But When i use FsStateBackend on staging
> (which is using HDFS as file system) it is working fine.
> On local with local file system it's working fine in both cases.
> Please check attached logs. I have around 20-25 tasks in my app.
> {code:java}
> 2017-09-29 14:21:31,639 INFO
> org.apache.flink.streaming.connectors.fs.bucketing.BucketingSink - No state
> to restore for the BucketingSink (taskIdx=0).
> 2017-09-29 14:21:31,640 INFO
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend -
> Initializing RocksDB keyed state backend from snapshot.
> 2017-09-29 14:21:32,020 INFO
> org.apache.flink.streaming.connectors.fs.bucketing.BucketingSink - No state
> to restore for the BucketingSink (taskIdx=1).
> 2017-09-29 14:21:32,022 INFO
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend -
> Initializing RocksDB keyed state backend from snapshot.
> 2017-09-29 14:21:32,078 INFO com.datastax.driver.core.NettyUtil
> - Found Netty's native epoll transport in the classpath, using
> it
> 2017-09-29 14:21:34,177 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to fail task externally Co-Flat Map (1/2)
> (b879f192c4e8aae6671cdafb3a24c00a).
> 2017-09-29 14:21:34,177 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to fail task externally Map (2/2)
> (1ea5aef6ccc7031edc6b37da2912d90b).
> 2017-09-29 14:21:34,178 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to fail task externally Co-Flat Map (2/2)
> (4bac8e764c67520d418a4c755be23d4d).
> 2017-09-29 14:21:34,178 INFO org.apache.flink.runtime.taskmanager.Task
> - Co-Flat Map (1/2) (b879f192c4e8aae6671cdafb3a24c00a) switched
> from RUNNING to FAILED.
> AsynchronousException{java.lang.Exception: Could not materialize checkpoint 2
> for operator Co-Flat Map (1/2).}
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:970)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.Exception: Could not materialize checkpoint 2 for
> operator Co-Flat Map (1/2).
> ... 6 more
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.IllegalStateException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:43)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> ... 5 more
> Suppressed: java.lang.Exception: Could not properly cancel managed
> keyed state future.
> at
> org.apache.flink.streaming.api.operators.OperatorSnapshotResult.cancel(OperatorSnapshotResult.java:90)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.cleanup(StreamTask.java:1023)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:961)
> ... 5 more
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.IllegalStateException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:43)
> at
> org.apache.flink.runtime.state.StateUtil.discardStateFuture(StateUtil.java:85)
> at
> org.apache.flink.streaming.api.operators.OperatorSnapshotResult.cancel(OperatorSnapshotResult.java:88)
> ... 7 more
> Caused by: java.lang.IllegalStateException
> at
> org.apache.flink.util.Preconditions.checkState(Preconditions.java:179)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeSnapshot(RocksDBKeyedStateBackend.java:878)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:353)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:350)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:40)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> ... 5 more
> [CIRCULAR REFERENCE:java.lang.IllegalStateException]
> 2017-09-29 14:21:34,177 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to fail task externally Map (1/2)
> (a06925261e74b4efdf50a30089e2b778).
> 2017-09-29 14:21:34,177 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to fail task externally Map (1/2)
> (1747902c96e63fefd977ac4d4a01d2fa).
> 2017-09-29 14:21:34,180 INFO org.apache.flink.runtime.taskmanager.Task
> - Map (1/2) (a06925261e74b4efdf50a30089e2b778) switched from
> RUNNING to FAILED.
> AsynchronousException{java.lang.Exception: Could not materialize checkpoint 2
> for operator Map (1/2).}
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:970)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.Exception: Could not materialize checkpoint 2 for
> operator Map (1/2).
> ... 6 more
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.IllegalStateException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:43)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> ... 5 more
> Suppressed: java.lang.Exception: Could not properly cancel managed
> keyed state future.
> at
> org.apache.flink.streaming.api.operators.OperatorSnapshotResult.cancel(OperatorSnapshotResult.java:90)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.cleanup(StreamTask.java:1023)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:961)
> ... 5 more
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.IllegalStateException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:43)
> at
> org.apache.flink.runtime.state.StateUtil.discardStateFuture(StateUtil.java:85)
> at
> org.apache.flink.streaming.api.operators.OperatorSnapshotResult.cancel(OperatorSnapshotResult.java:88)
> ... 7 more
> Caused by: java.lang.IllegalStateException
> at
> org.apache.flink.util.Preconditions.checkState(Preconditions.java:179)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeSnapshot(RocksDBKeyedStateBackend.java:878)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:353)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:350)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:40)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> ... 5 more
> [CIRCULAR REFERENCE:java.lang.IllegalStateException]
> {code}
> That same printed for around 12-13 tasks. Than following logs printed :
> {code:java}
> 2017-09-29 14:21:35,039 INFO org.apache.flink.runtime.taskmanager.Task
> - Ensuring all FileSystem streams are closed for task Source:
> Custom Source (2/2) (77c896e2a2063e98f399244cae21c260) [CANCELED]
> 2017-09-29 14:21:35,041 WARN org.apache.hadoop.ipc.Client
> - interrupted waiting to send rpc request to server
> java.lang.InterruptedException
> at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:404)
> at java.util.concurrent.FutureTask.get(FutureTask.java:191)
> at
> org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:1059)
> at org.apache.hadoop.ipc.Client.call(Client.java:1454)
> at org.apache.hadoop.ipc.Client.call(Client.java:1412)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
> at com.sun.proxy.$Proxy12.delete(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.delete(ClientNamenodeProtocolTranslatorPB.java:540)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
> at com.sun.proxy.$Proxy13.delete(Unknown Source)
> at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:2044)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:707)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:703)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:714)
> at
> org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.delete(HadoopFileSystem.java:435)
> at
> org.apache.flink.core.fs.SafetyNetWrapperFileSystem.delete(SafetyNetWrapperFileSystem.java:106)
> at
> org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory$FsCheckpointStateOutputStream.closeAndGetHandle(FsCheckpointStreamFactory.java:324)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeMetaData(RocksDBKeyedStateBackend.java:826)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeSnapshot(RocksDBKeyedStateBackend.java:875)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:353)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:350)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:40)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> 2017-09-29 14:21:35,042 WARN
> org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory - Could
> not delete the checkpoint stream file
> hdfs://static.175.87.9.5.clients.your-server.de:8020/flink/flink-checkpoints/rocksDB/events/e10dbe09aa2ecccb22737ddce8b4dc9f/chk-2/a28796de-978a-4f1a-8ff5-5f5c654b0ffc.
> java.io.IOException: java.lang.InterruptedException
> at org.apache.hadoop.ipc.Client.call(Client.java:1460)
> at org.apache.hadoop.ipc.Client.call(Client.java:1412)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
> at com.sun.proxy.$Proxy12.delete(Unknown Source)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.delete(ClientNamenodeProtocolTranslatorPB.java:540)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
> at
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
> at com.sun.proxy.$Proxy13.delete(Unknown Source)
> at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:2044)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:707)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$14.doCall(DistributedFileSystem.java:703)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:714)
> at
> org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.delete(HadoopFileSystem.java:435)
> at
> org.apache.flink.core.fs.SafetyNetWrapperFileSystem.delete(SafetyNetWrapperFileSystem.java:106)
> at
> org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory$FsCheckpointStateOutputStream.closeAndGetHandle(FsCheckpointStreamFactory.java:324)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeMetaData(RocksDBKeyedStateBackend.java:826)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBIncrementalSnapshotOperation.materializeSnapshot(RocksDBKeyedStateBackend.java:875)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:353)
> at
> org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.call(RocksDBKeyedStateBackend.java:350)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:40)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:897)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.InterruptedException
> at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:404)
> at java.util.concurrent.FutureTask.get(FutureTask.java:191)
> at
> org.apache.hadoop.ipc.Client$Connection.sendRpcRequest(Client.java:1059)
> at org.apache.hadoop.ipc.Client.call(Client.java:1454)
> ... 31 more
> 2017-09-29 14:21:35,054 INFO org.apache.flink.runtime.taskmanager.Task
> - Attempting to cancel task KeyedCEPPatternOperator -> Flat Map
> -> (Flat Map, Flat Map) (1/2) (8c6eff62d47c4a624a7554065bac36ee).
> 2017-09-29 14:21:35,055 INFO org.apache.flink.runtime.taskmanager.Task
> - KeyedCEPPatternOperator -> Flat Map -> (Flat Map, Flat Map)
> (1/2) (8c6eff62d47c4a624a7554065bac36ee) switched from RUNNING to CANCELING.
> {code}
> Than same printed for 12-13 tasks.
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