Re: flink-savepoint问题
对于 keyed state，需要保证同一个 key 在 同一个 keygroup 中，如果是某个 key 有热点，可以在 keyby 之前进行一次
map（在 key 后面拼接一些 后缀），然后 keyby，最后处理完成之后，将这些进行聚合
Best,
Congxian
guomuhua <663021...@qq.com> 于2021年3月4日周四 下午12:49写道：
> 我也遇到类似情况，为了打散数据，keyby加了随机数。请问怎么正确打散数据呢？
> nobleyd wrote
> > 是不是使用了随机key。
>
> > guaishushu1103@
>
> >
>
> > guaishushu1103@
>
> > 于2021年3月3日周三 下午6:53写道：> checkpoint 可以成功保存，但是savepoint出现错误：>
> > java.lang.Exception: Could not materialize checkpoint 2404 for operator>
> > KeyedProcess (21/48).> at>
> >
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:1100)>
>
> > at>
> >
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1042)>
>
> > at>
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)>
>
> > at>
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)>
>
> > at java.lang.Thread.run(Thread.java:745)> Caused by:
> > java.util.concurrent.ExecutionException:>
> > java.lang.IllegalArgumentException: Key group 0 is not in>
> > KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.> at
> > java.util.concurrent.FutureTask.report(FutureTask.java:122)> at
> > java.util.concurrent.FutureTask.get(FutureTask.java:192)> at>
> >
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:450)>
>
> > at> org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.
>
> > (OperatorSnapshotFinalizer.java:47)> at>
> >
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1011)>
>
> > ... 3 more> Caused by: java.lang.IllegalArgumentException: Key group 0 is
> > not in> KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.> at>
> >
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.computeKeyGroupIndex(KeyGroupRangeOffsets.java:142)>
>
> > at>
> >
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.setKeyGroupOffset(KeyGroupRangeOffsets.java:104)>
>
> > at>
> >
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeKVStateData(RocksFullSnapshotStrategy.java:314)>
>
> > at>
> >
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeSnapshotToOutputStream(RocksFullSnapshotStrategy.java:256)>
>
> > at>
> >
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:221)>
>
> > at>
> >
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:174)>
>
> > at>
> >
> org.apache.flink.runtime.state.AsyncSnapshotCallable.call(AsyncSnapshotCallable.java:75)>
>
> > at java.util.concurrent.FutureTask.run(FutureTask.java:266)> at>
> >
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:447)>
>
> > ... 5 more>>>
>
> > guaishushu1103@
>
> >>
>
>
>
>
>
> --
> Sent from: http://apache-flink.147419.n8.nabble.com/
Re: flink-savepoint问题
我也遇到类似情况，为了打散数据，keyby加了随机数。请问怎么正确打散数据呢？
nobleyd wrote
> 是不是使用了随机key。
> guaishushu1103@
>
> guaishushu1103@
> 于2021年3月3日周三 下午6:53写道：> checkpoint 可以成功保存，但是savepoint出现错误：>
> java.lang.Exception: Could not materialize checkpoint 2404 for operator>
> KeyedProcess (21/48).> at>
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:1100)>
>
> at>
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1042)>
>
> at>
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)>
>
> at>
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)>
>
> at java.lang.Thread.run(Thread.java:745)> Caused by:
> java.util.concurrent.ExecutionException:>
> java.lang.IllegalArgumentException: Key group 0 is not in>
> KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.> at
> java.util.concurrent.FutureTask.report(FutureTask.java:122)> at
> java.util.concurrent.FutureTask.get(FutureTask.java:192)> at>
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:450)>
>
> at> org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.
> (OperatorSnapshotFinalizer.java:47)> at>
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1011)>
>
> ... 3 more> Caused by: java.lang.IllegalArgumentException: Key group 0 is
> not in> KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.> at>
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.computeKeyGroupIndex(KeyGroupRangeOffsets.java:142)>
>
> at>
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.setKeyGroupOffset(KeyGroupRangeOffsets.java:104)>
>
> at>
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeKVStateData(RocksFullSnapshotStrategy.java:314)>
>
> at>
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeSnapshotToOutputStream(RocksFullSnapshotStrategy.java:256)>
>
> at>
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:221)>
>
> at>
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:174)>
>
> at>
> org.apache.flink.runtime.state.AsyncSnapshotCallable.call(AsyncSnapshotCallable.java:75)>
>
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)> at>
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:447)>
>
> ... 5 more>>>
> guaishushu1103@
>>
--
Sent from: http://apache-flink.147419.n8.nabble.com/
Re: flink-savepoint问题
我也遇到同样问题，为了打散数据，在keyby时加了随机数作为后缀，去掉随机数，可以正常savepoint，加上随机数就savepoint失败。所以如果确有要打散数据的需求，应该怎么处理呢？ -- Sent from: http://apache-flink.147419.n8.nabble.com/
Re: flink-savepoint问题
是不是使用了随机key。
guaishushu1...@163.com 于2021年3月3日周三 下午6:53写道：
> checkpoint 可以成功保存，但是savepoint出现错误：
> java.lang.Exception: Could not materialize checkpoint 2404 for operator
> KeyedProcess (21/48).
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:1100)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1042)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.IllegalArgumentException: Key group 0 is not in
> KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:450)
> at
> org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.(OperatorSnapshotFinalizer.java:47)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1011)
> ... 3 more
> Caused by: java.lang.IllegalArgumentException: Key group 0 is not in
> KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.
> at
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.computeKeyGroupIndex(KeyGroupRangeOffsets.java:142)
> at
> org.apache.flink.runtime.state.KeyGroupRangeOffsets.setKeyGroupOffset(KeyGroupRangeOffsets.java:104)
> at
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeKVStateData(RocksFullSnapshotStrategy.java:314)
> at
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeSnapshotToOutputStream(RocksFullSnapshotStrategy.java:256)
> at
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:221)
> at
> org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:174)
> at
> org.apache.flink.runtime.state.AsyncSnapshotCallable.call(AsyncSnapshotCallable.java:75)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:447)
> ... 5 more
>
>
> guaishushu1...@163.com
>
flink-savepoint问题
checkpoint 可以成功保存，但是savepoint出现错误：
java.lang.Exception: Could not materialize checkpoint 2404 for operator
KeyedProcess (21/48).
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.handleExecutionException(StreamTask.java:1100)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1042)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException:
java.lang.IllegalArgumentException: Key group 0 is not in
KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at
org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:450)
at
org.apache.flink.streaming.api.operators.OperatorSnapshotFinalizer.(OperatorSnapshotFinalizer.java:47)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:1011)
... 3 more
Caused by: java.lang.IllegalArgumentException: Key group 0 is not in
KeyGroupRange{startKeyGroup=54, endKeyGroup=55}.
at
org.apache.flink.runtime.state.KeyGroupRangeOffsets.computeKeyGroupIndex(KeyGroupRangeOffsets.java:142)
at
org.apache.flink.runtime.state.KeyGroupRangeOffsets.setKeyGroupOffset(KeyGroupRangeOffsets.java:104)
at
org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeKVStateData(RocksFullSnapshotStrategy.java:314)
at
org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.writeSnapshotToOutputStream(RocksFullSnapshotStrategy.java:256)
at
org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:221)
at
org.apache.flink.contrib.streaming.state.snapshot.RocksFullSnapshotStrategy$SnapshotAsynchronousPartCallable.callInternal(RocksFullSnapshotStrategy.java:174)
at
org.apache.flink.runtime.state.AsyncSnapshotCallable.call(AsyncSnapshotCallable.java:75)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
org.apache.flink.runtime.concurrent.FutureUtils.runIfNotDoneAndGet(FutureUtils.java:447)
... 5 more
guaishushu1...@163.com
Re: Re:Re: flink savepoint问题
Hi 首先，如果这个问题很容易复现的话，我们需要定位到是什么导致了OOMkilled。 1. 打开block-cache usage [1] 观察metrics中block cache的使用量。 2. 麻烦回答一下几个问题，有助于进一步定位 * 单个TM有几个slot * 单个TM的managed memory配置了多少 * 一共声明了多少个keyed state，（如果使用了window，也相当于会使用一个state），其中有多少个map state，是否经常遍历那个map state * 被kill的container内一共有几个rocksDB 实例，可以通过搜索日志 "Obtained shared RocksDB cache of size" 计数 * 是否对RocksDB单独配置了options factory或者相关options state.backend.rocksdb.memory.managed 这个参数的语义是RocksDB使用的内存从Flink来，一个slot内的若干RocksDB实例会共享一块share cache。如果将这个参数设置为false，那么就回退到1.9以前的场景，rocksDB的内存将完全不由Flink管理，在某种程度上来说，更容易被conatiner kill。 如果想要快速缓解这个问题，一种办法是增大 taskmanager.memory.task.off-heap.size [2]，使得提供多一部分内存以供RocksDB超用。其他的缓解办法需要根据您对上面问题的回答来实施 [1] https://ci.apache.org/projects/flink/flink-docs-release-1.10/ops/config.html#state-backend-rocksdb-metrics-block-cache-usage [2] https://ci.apache.org/projects/flink/flink-docs-stable/ops/config.html#taskmanager-memory-task-off-heap-size Best 唐云 From: xyq Sent: Monday, March 30, 2020 10:41 To: user-zh@flink.apache.org Subject: Re:Re: flink savepoint问题 Hi，您好： 我这边有个小流 left join大流的需求，小流的数据夜间基本没有 可能会4-5个小时没数据，目前的情况是一到晚上container老是被kill掉，报的是内存溢出。我想问下，我想把托管内存这设置成false，会有什么弊端吗？或者该问题怎么解决？困扰了好久了，请您指点一谢谢。 state.backend.rocksdb.memory.managed : false 在 2020-03-28 11:04:09，"Congxian Qiu" 写道： >Hi > >对于问题 1 在反压的情况下，可能导致 Savepoint 做不成功从而超时，这个暂时没法解决，现在有一个 issue[1] 在做 Unalign >Checkpoint 可以解决反压情况下的 checkpoint >对于问题 3，checkpoint 超时了，超时的定义：在设置的时间内（比如你这里 5 分钟），有 task 没有完成 >snapshot。调长超时时间能够一定的缓解这个问题，不过你最好找到超时的原因，然后针对性的优化。 >[1] https://issues.apache.org/jira/browse/FLINK-14551 >Best, >Congxian > > >大数据开发面试_夏永权 于2020年3月27日周五 下午4:19写道： > >> Hi，您好，在使用flink的过程中遇到如下问题，个人未能解决，所以请求您指导一下，谢谢！ >> >> 1. flink cancel -s $SAVEPOINT_DIR $job_id -yid $application_id >> 在程序有背压的时候停不掉 >> >> >> The program finished with the following exception: >> org.apache.flink.util.FlinkException: Could not cancel job >> 1f768e4ca9ad5792a4844a5d12163b73. >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:523) >> at >> org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843) >> at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:515) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:904) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) >> Caused by: java.util.concurrent.TimeoutException >> at >> java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) >> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:521) >> ... 9 more >> stop flink job failed!!! >> >> >> >> >> 2.再用flink >> sql的ddl时候增加一个字段后，程序启动失败，需要删除savepoint才能启动(ddl后双流join的逻辑，其中一个流加了一个字段) >> >> >> The program finished with the following exception: >> org.apache.flink.client.program.ProgramInvocationException: The main >> method caused an error: >> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not >> complete the operation. Number of retries has been exhausted. >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335) >> at >> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205) >> at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138) >> at >> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664) >> at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContex
Re:Re: flink savepoint问题
Hi，您好： 我这边有个小流 left join大流的需求，小流的数据夜间基本没有 可能会4-5个小时没数据，目前的情况是一到晚上container老是被kill掉，报的是内存溢出。我想问下，我想把托管内存这设置成false，会有什么弊端吗？或者该问题怎么解决？困扰了好久了，请您指点一谢谢。 state.backend.rocksdb.memory.managed : false 在 2020-03-28 11:04:09，"Congxian Qiu" 写道： >Hi > >对于问题 1 在反压的情况下，可能导致 Savepoint 做不成功从而超时，这个暂时没法解决，现在有一个 issue[1] 在做 Unalign >Checkpoint 可以解决反压情况下的 checkpoint >对于问题 3，checkpoint 超时了，超时的定义：在设置的时间内（比如你这里 5 分钟），有 task 没有完成 >snapshot。调长超时时间能够一定的缓解这个问题，不过你最好找到超时的原因，然后针对性的优化。 >[1] https://issues.apache.org/jira/browse/FLINK-14551 >Best, >Congxian > > >大数据开发面试_夏永权 于2020年3月27日周五 下午4:19写道： > >> Hi，您好，在使用flink的过程中遇到如下问题，个人未能解决，所以请求您指导一下，谢谢！ >> >> 1. flink cancel -s $SAVEPOINT_DIR $job_id -yid $application_id >> 在程序有背压的时候停不掉 >> >> >> The program finished with the following exception: >> org.apache.flink.util.FlinkException: Could not cancel job >> 1f768e4ca9ad5792a4844a5d12163b73. >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:523) >> at >> org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843) >> at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:515) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:904) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) >> Caused by: java.util.concurrent.TimeoutException >> at >> java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) >> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:521) >> ... 9 more >> stop flink job failed!!! >> >> >> >> >> 2.再用flink >> sql的ddl时候增加一个字段后，程序启动失败，需要删除savepoint才能启动(ddl后双流join的逻辑，其中一个流加了一个字段) >> >> >> The program finished with the following exception: >> org.apache.flink.client.program.ProgramInvocationException: The main >> method caused an error: >> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not >> complete the operation. Number of retries has been exhausted. >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335) >> at >> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205) >> at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138) >> at >> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664) >> at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) >> Caused by: java.util.concurrent.ExecutionException: >> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not >> complete the operation. Number of retries has been exhausted. >> at >> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) >> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) >> at >> org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:83) >> at >> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1620) >> at >> com.etl.DwdBaseCarlifeTIotBindGeoManage.main(DwdBaseCarlifeTIotBindGeoManage.java:265) >> 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:498) >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321) >> ... 11 more >> Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: >> Could not complete the operation. Number of retries has been exhausted. >> at >> org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:284) >> at >> java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) >> at >>
Re:Re: flink savepoint问题
非常感谢 在 2020-03-28 11:04:09，"Congxian Qiu" 写道： >Hi > >对于问题 1 在反压的情况下，可能导致 Savepoint 做不成功从而超时，这个暂时没法解决，现在有一个 issue[1] 在做 Unalign >Checkpoint 可以解决反压情况下的 checkpoint >对于问题 3，checkpoint 超时了，超时的定义：在设置的时间内（比如你这里 5 分钟），有 task 没有完成 >snapshot。调长超时时间能够一定的缓解这个问题，不过你最好找到超时的原因，然后针对性的优化。 >[1] https://issues.apache.org/jira/browse/FLINK-14551 >Best, >Congxian > > >大数据开发面试_夏永权 于2020年3月27日周五 下午4:19写道： > >> Hi，您好，在使用flink的过程中遇到如下问题，个人未能解决，所以请求您指导一下，谢谢！ >> >> 1. flink cancel -s $SAVEPOINT_DIR $job_id -yid $application_id >> 在程序有背压的时候停不掉 >> >> >> The program finished with the following exception: >> org.apache.flink.util.FlinkException: Could not cancel job >> 1f768e4ca9ad5792a4844a5d12163b73. >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:523) >> at >> org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843) >> at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:515) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:904) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) >> Caused by: java.util.concurrent.TimeoutException >> at >> java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) >> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:521) >> ... 9 more >> stop flink job failed!!! >> >> >> >> >> 2.再用flink >> sql的ddl时候增加一个字段后，程序启动失败，需要删除savepoint才能启动(ddl后双流join的逻辑，其中一个流加了一个字段) >> >> >> The program finished with the following exception: >> org.apache.flink.client.program.ProgramInvocationException: The main >> method caused an error: >> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not >> complete the operation. Number of retries has been exhausted. >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335) >> at >> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205) >> at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138) >> at >> org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664) >> at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213) >> at >> org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895) >> at >> org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) >> at java.security.AccessController.doPrivileged(Native Method) >> at javax.security.auth.Subject.doAs(Subject.java:422) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) >> at >> org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) >> Caused by: java.util.concurrent.ExecutionException: >> org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not >> complete the operation. Number of retries has been exhausted. >> at >> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) >> at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) >> at >> org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:83) >> at >> org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1620) >> at >> com.etl.DwdBaseCarlifeTIotBindGeoManage.main(DwdBaseCarlifeTIotBindGeoManage.java:265) >> 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:498) >> at >> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321) >> ... 11 more >> Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: >> Could not complete the operation. Number of retries has been exhausted. >> at >> org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:284) >> at >> java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) >> at >> java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) >> at >> java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) >> at >>
Re: flink savepoint问题
Hi 对于问题 1 在反压的情况下，可能导致 Savepoint 做不成功从而超时，这个暂时没法解决，现在有一个 issue[1] 在做 Unalign Checkpoint 可以解决反压情况下的 checkpoint 对于问题 3，checkpoint 超时了，超时的定义：在设置的时间内（比如你这里 5 分钟），有 task 没有完成 snapshot。调长超时时间能够一定的缓解这个问题，不过你最好找到超时的原因，然后针对性的优化。 [1] https://issues.apache.org/jira/browse/FLINK-14551 Best, Congxian 大数据开发面试_夏永权 于2020年3月27日周五 下午4:19写道： > Hi，您好，在使用flink的过程中遇到如下问题，个人未能解决，所以请求您指导一下，谢谢！ > > 1. flink cancel -s $SAVEPOINT_DIR $job_id -yid $application_id > 在程序有背压的时候停不掉 > > > The program finished with the following exception: > org.apache.flink.util.FlinkException: Could not cancel job > 1f768e4ca9ad5792a4844a5d12163b73. > at > org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:523) > at > org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843) > at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:515) > at > org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:904) > at > org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) > at > org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) > at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) > Caused by: java.util.concurrent.TimeoutException > at > java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) > at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) > at > org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:521) > ... 9 more > stop flink job failed!!! > > > > > 2.再用flink > sql的ddl时候增加一个字段后，程序启动失败，需要删除savepoint才能启动(ddl后双流join的逻辑，其中一个流加了一个字段) > > > The program finished with the following exception: > org.apache.flink.client.program.ProgramInvocationException: The main > method caused an error: > org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not > complete the operation. Number of retries has been exhausted. > at > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335) > at > org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205) > at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138) > at > org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664) > at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213) > at > org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895) > at > org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) > at > org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) > at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) > Caused by: java.util.concurrent.ExecutionException: > org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not > complete the operation. Number of retries has been exhausted. > at > java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) > at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) > at > org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:83) > at > org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1620) > at > com.etl.DwdBaseCarlifeTIotBindGeoManage.main(DwdBaseCarlifeTIotBindGeoManage.java:265) > 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:498) > at > org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321) > ... 11 more > Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: > Could not complete the operation. Number of retries has been exhausted. > at > org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:284) > at > java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) > at > java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) > at > java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) > at > java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977) > at > org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:342) > at >
flink savepoint问题
Hi，您好，在使用flink的过程中遇到如下问题，个人未能解决，所以请求您指导一下，谢谢！ 1. flink cancel -s $SAVEPOINT_DIR $job_id -yid $application_id 在程序有背压的时候停不掉 The program finished with the following exception: org.apache.flink.util.FlinkException: Could not cancel job 1f768e4ca9ad5792a4844a5d12163b73. at org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:523) at org.apache.flink.client.cli.CliFrontend.runClusterAction(CliFrontend.java:843) at org.apache.flink.client.cli.CliFrontend.cancel(CliFrontend.java:515) at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:904) at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) Caused by: java.util.concurrent.TimeoutException at java.util.concurrent.CompletableFuture.timedGet(CompletableFuture.java:1771) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1915) at org.apache.flink.client.cli.CliFrontend.lambda$cancel$6(CliFrontend.java:521) ... 9 more stop flink job failed!!! 2.再用flink sql的ddl时候增加一个字段后，程序启动失败，需要删除savepoint才能启动(ddl后双流join的逻辑，其中一个流加了一个字段) The program finished with the following exception: org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not complete the operation. Number of retries has been exhausted. at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:335) at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:205) at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:138) at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:664) at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:213) at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:895) at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:968) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692) at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:968) Caused by: java.util.concurrent.ExecutionException: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not complete the operation. Number of retries has been exhausted. at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895) at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:83) at org.apache.flink.streaming.api.environment.StreamExecutionEnvironment.execute(StreamExecutionEnvironment.java:1620) at com.etl.DwdBaseCarlifeTIotBindGeoManage.main(DwdBaseCarlifeTIotBindGeoManage.java:265) 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:498) at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:321) ... 11 more Caused by: org.apache.flink.runtime.concurrent.FutureUtils$RetryException: Could not complete the operation. Number of retries has been exhausted. at org.apache.flink.runtime.concurrent.FutureUtils.lambda$retryOperationWithDelay$8(FutureUtils.java:284) at java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:760) at java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:736) at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:474) at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1977) at org.apache.flink.runtime.rest.RestClient.lambda$submitRequest$1(RestClient.java:342) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:500) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:493) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:472) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:413) at
