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Posted to user@flink.apache.org by 潘功森 <pa...@hotmail.com> on 2018/10/10 03:02:21 UTC

答复: No data issued by flink window after a few hours

Hi,
"ram to cache the distinct data about sliding window" means I used computer momery not the third part db to cache the data need used in window.
“the data need used in window” means ：such as the sliding window is 1 hour, and I need to count the distinct users, I need to cache the user id about one hour.
Cause there’re no related errors.
Yours,
September

________________________________
发件人: vino yang <ya...@gmail.com>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

? ?? <pa...@hotmail.com>> 于2018年10月10日周三 上午10:37写道：
Hi all,
    I used flink window, and when the job begins, we could get the results of windiow.But there’re no results issued after a few hours.
    I found the job is still running and no errors, and the data not used window all can be issued.
    By the way, I used Flink 1.3.2 and ram to cache the distinct data about sliding window.

Yours,
    September

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi vino,
I found when job run a period of time, the currentLowWatermark will be like a time far from now like 1539618594000 (2018/10/15 23:49:54), but now is 2018/10/15 14:29:00 .
I checked event time from data, there’re no event time far from now.

Yours,
September

________________________________
发件人: 潘 功森 <pa...@hotmail.com>
发送时间: Friday, October 12, 2018 2:05:33 PM
收件人: vino yang
抄送: user; dwysakowicz@apache.org
主题: 答复: No data issued by flink window after a few hours

Hi,
It stopped to update now.
[cid:image001.png@01D46234.74D7ACE0]

Yours,
September

________________________________
发件人: 潘 功森 <pa...@hotmail.com>
发送时间: Friday, October 12, 2018 1:49:58 PM
收件人: vino yang
抄送: user; dwysakowicz@apache.org
主题: 答复: No data issued by flink window after a few hours

Hi,
I chose the ten seconds and fifteen minutes windows, and it looks fine when running few minutes as below pictures.

[cid:image004.png@01D46232.632BF8E0]
[cid:image005.png@01D46232.632BF8E0]

But I found there‘re no changes between 13:34 and 13:36, but it also could be issued , and I can tolerate it.
[cid:image010.png@01D46232.632BF8E0]

If no results issued after windows ends, I will take pictures again for you.

Yours,
September

发件人: vino yang<ma...@gmail.com>
发送时间: 2018年10月12日 13:04
主题: Re: No data issued by flink window after a few hours

Hi gongsen,

Since you are running well locally, it should not be a configuration issue.
You can refer to the Flink UI to see if your checkpoint is delayed.
I hope that you can follow the instructions in the documentation[1] and provide some screenshots that will help the community help locate the problem.

Thanks, vino.

[1]: https://ci.apache.org/projects/flink/flink-docs-release-1.6/monitoring/debugging_event_time.html#monitoring-current-event-time

潘 功森 <pa...@hotmail.com>> 于2018年10月12日周五 上午11:10写道：
Please look at the mail below, the others were out of data cause the bad network.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Friday, October 12, 2018 11:05:49 AM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi,
I found the pictures maybe too big and the net here not so good, so the mail I wrote is not sent sucsessfully last night.
Yes, I used event time.
I found watermarks fired normally when the job started, but it stopped and no changed after running hours.
And I changed as fs state backend, I configured at flink-conf.yaml below:
State.backend: filesystem
State.backend.fs.checkpointdir: file:///xxx/checkpoints

I found there are many checkpoints saved in the file.
But the watermarks also will be stoppped.

And there’re two enviroments.
The local running well, and the problem occurred on site.
There’re two differences:

1. Data amount very small in local and very huge on site.

2. On site configurations:

Akka.ask.timeout: 2min

Akka.lookup.timeout: 2min

Akka.client.timeout: 3min

Akka.log.lifecycle.events: on

Akka.tcp.timeout: 60s

But not configured at local.

So there’re any influences?

Please help me…

Yours,
September

发件人: vino yang<ma...@gmail.com>
发送时间: 2018年10月11日 14:56
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user<ma...@flink.apache.org>
主题: Re: No data issued by flink window after a few hours

Hi gongsen,

Have you used event time as time semantics? If so, then the possible problem is related to watermark.
Since I don't know the details of your program, it's hard to make a conclusion. You can check if your watermark is firing normally.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月11日周四 下午12:12写道：
Hi，
I changed as below configurations，and it looks fine when job started.
But there’re no results issued when window ends after running about six hours, and no errors and exceptions.
How can I position the question?

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 11:45:31 AM
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 11:33:48 AM
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Did you mean "computer momery" referring to Memory Statebackend?
The Flink window mechanism is internally based on State, and this is done for fault tolerance.
If you introduce external storage, it will break its design and bring other problems.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:02写道：
Hi,
"ram to cache the distinct data about sliding window" means I used computer momery not the third part db to cache the data need used in window.
“the data need used in window” means ：such as the sliding window is 1 hour, and I need to count the distinct users, I need to cache the user id about one hour.
Cause there’re no related errors.
Yours,
September

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

? ?? <pa...@hotmail.com>> 于2018年10月10日周三 上午10:37写道：
Hi all,
I used flink window, and when the job begins, we could get the results of windiow.But there’re no results issued after a few hours.
I found the job is still running and no errors, and the data not used window all can be issued.
By the way, I used Flink 1.3.2 and ram to cache the distinct data about sliding window.

Yours,
September

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi,
It stopped to update now.
[cid:image001.png@01D46234.74D7ACE0]

Yours,
September

Hi,
I chose the ten seconds and fifteen minutes windows, and it looks fine when running few minutes as below pictures.

[cid:image004.png@01D46232.632BF8E0]
[cid:image005.png@01D46232.632BF8E0]

But I found there‘re no changes between 13:34 and 13:36, but it also could be issued , and I can tolerate it.
[cid:image010.png@01D46232.632BF8E0]

If no results issued after windows ends, I will take pictures again for you.

Yours,
September

发件人: vino yang<ma...@gmail.com>
发送时间: 2018年10月12日 13:04
主题: Re: No data issued by flink window after a few hours

Hi gongsen,

Thanks, vino.

[1]: https://ci.apache.org/projects/flink/flink-docs-release-1.6/monitoring/debugging_event_time.html#monitoring-current-event-time

潘 功森 <pa...@hotmail.com>> 于2018年10月12日周五 上午11:10写道：
Please look at the mail below, the others were out of data cause the bad network.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Friday, October 12, 2018 11:05:49 AM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

I found there are many checkpoints saved in the file.
But the watermarks also will be stoppped.

And there’re two enviroments.
The local running well, and the problem occurred on site.
There’re two differences:

1. Data amount very small in local and very huge on site.

2. On site configurations:

Akka.ask.timeout: 2min

Akka.lookup.timeout: 2min

Akka.client.timeout: 3min

Akka.log.lifecycle.events: on

Akka.tcp.timeout: 60s

But not configured at local.

So there’re any influences?

Please help me…

Yours,
September

Hi gongsen,

Thanks, vino.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi,
I chose the ten seconds and fifteen minutes windows, and it looks fine when running few minutes as below pictures.

[cid:image004.png@01D46232.632BF8E0]
[cid:image005.png@01D46232.632BF8E0]

But I found there‘re no changes between 13:34 and 13:36, but it also could be issued , and I can tolerate it.
[cid:image010.png@01D46232.632BF8E0]

If no results issued after windows ends, I will take pictures again for you.

Yours,
September

发件人: vino yang<ma...@gmail.com>
发送时间: 2018年10月12日 13:04
主题: Re: No data issued by flink window after a few hours

Hi gongsen,

Thanks, vino.

[1]: https://ci.apache.org/projects/flink/flink-docs-release-1.6/monitoring/debugging_event_time.html#monitoring-current-event-time

潘 功森 <pa...@hotmail.com>> 于2018年10月12日周五 上午11:10写道：
Please look at the mail below, the others were out of data cause the bad network.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Friday, October 12, 2018 11:05:49 AM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

I found there are many checkpoints saved in the file.
But the watermarks also will be stoppped.

And there’re two enviroments.
The local running well, and the problem occurred on site.
There’re two differences:

1. Data amount very small in local and very huge on site.

2. On site configurations:

Akka.ask.timeout: 2min

Akka.lookup.timeout: 2min

Akka.client.timeout: 3min

Akka.log.lifecycle.events: on

Akka.tcp.timeout: 60s

But not configured at local.

So there’re any influences?

Please help me…

Yours,
September

Hi gongsen,

Thanks, vino.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

Re: No data issued by flink window after a few hours

Posted by vino yang <ya...@gmail.com>.

Hi gongsen,

Since you are running well locally, it should not be a configuration issue.
You can refer to the Flink UI to see if your checkpoint is delayed.
I hope that you can follow the instructions in the documentation[1] and
provide some screenshots that will help the community help locate the
problem.

Thanks, vino.

[1]:
https://ci.apache.org/projects/flink/flink-docs-release-1.6/monitoring/debugging_event_time.html#monitoring-current-event-time

潘 功森 <pa...@hotmail.com> 于2018年10月12日周五 上午11:10写道：

> Please look at the mail below,  the others were out of data cause the bad
> network.
>
>
>
> Yours,
>
> September
>
>
> ------------------------------
> *发件人:* 潘 功森 <pa...@hotmail.com>
> *发送时间:* Friday, October 12, 2018 11:05:49 AM
> *收件人:* vino yang
> *抄送:* user
> *主题:* 答复: No data issued by flink window after a few hours
>
>
> Hi,
>
> I found the pictures maybe too big and the net here not so good, so the
> mail I wrote is not sent sucsessfully last night.
>
> Yes, I used event time.
>
> I found watermarks fired normally when the job started, but it stopped and
> no changed after running hours.
>
> And I changed as fs state backend, I configured at flink-conf.yaml below:
>
> State.backend: filesystem
>
> State.backend.fs.checkpointdir: file:///xxx/checkpoints
>
>
>
> I found there are many checkpoints saved in the file.
>
> But the watermarks also will be stoppped.
>
>
>
> And there’re two enviroments.
>
> The local running well, and the problem occurred on site.
>
> There’re two differences:
>
> 1.     Data amount very small in local and very huge on site.
>
> 2.     On site configurations:
>
> Akka.ask.timeout: 2min
>
> Akka.lookup.timeout: 2min
>
> Akka.client.timeout: 3min
>
> Akka.log.lifecycle.events: on
>
> Akka.tcp.timeout: 60s
>
>
>
> But not configured at local.
>
> So there’re any influences?
>
> Please help me…
>
>
>
>
>
> Yours,
>
> September
>
>
>
> *发件人: *vino yang <ya...@gmail.com>
> *发送时间: *2018年10月11日 14:56
> *收件人: *pangongsen@hotmail.com
> *抄送: *user <us...@flink.apache.org>
> *主题: *Re: No data issued by flink window after a few hours
>
>
>
> Hi gongsen,
>
>
>
> Have you used event time as time semantics? If so, then the possible
> problem is related to watermark.
>
> Since I don't know the details of your program, it's hard to make a
> conclusion. You can check if your watermark is firing normally.
>
>
>
> Thanks, vino.
>
>
>
> 潘 功森 <pa...@hotmail.com> 于2018年10月11日周四 下午12:12写道：
>
> Hi，
>
> I changed as below configurations，and it looks fine when job started.
>
> But there’re no results issued when window ends after running about six
> hours, and no errors and exceptions.
>
> How can I position the question?
>
>
>
> Yours,
>
> September
>
>
>
> *发件人**:* 潘 功森 <pa...@hotmail.com>
> *发送时间**:* Wednesday, October 10, 2018 2:44:48 PM
> *收件人**:* vino yang
> *抄送**:* user
> *主题**:* 答复: No data issued by flink window after a few hours
>
>
>
> Hi，
>
>
>
> Cause default state size in one hour is too small，and the max window size
> is 24 hours, so I used 500M.
>
>
>
> MemoryStateBackend stateBackend = new MemoryStateBackend(*MAX_STATE_SIZE*);//500M
> env.setStateBackend(stateBackend);
>
>
>
> And I found Irrespective of the configured maximal state size, the state
> cannot be larger than the akka frame size.
>
> So I add a config in flink-comf.yaml:
>
> akka.framesize: 524288000b
>
>
>
> What else do I have to pay attention to?
>
>
>
> Yours,
>
> September
>
>
>
> *发件人**:* vino yang <ya...@gmail.com>
> *发送时间**:* Wednesday, October 10, 2018 11:45:31 AM
> *收件人**:* pangongsen@hotmail.com
> *抄送**:* user
> *主题**:* Re: No data issued by flink window after a few hours
>
>
>
> Hi,
>
>
>
> I saw the exception image you provided. Based on the exception message, it
> seems you used the default max state size (5MB).
>
>
>
> You can specify the max state size to override the default value. Try :
>
>
>
> *MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);*
>
>
>
> Please note that you need to reserve enough memory for Flink.
>
>
>
> Thanks, vino.
>
>
>
> 潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:36写道：
>
> Please have a look about my last mail.
>
>
>
> When the cached window data is too large, how?
>
>
>
> Yours,
>
> September
>
>
>
> *发件人**:* vino yang <ya...@gmail.com>
> *发送时间**:* Wednesday, October 10, 2018 11:33:48 AM
> *收件人**:* pangongsen@hotmail.com
> *抄送**:* user
> *主题**:* Re: No data issued by flink window after a few hours
>
>
>
> Hi,
>
>
>
> Did you mean "computer momery" referring to Memory Statebackend?
>
> The Flink window mechanism is internally based on State, and this is done
> for fault tolerance.
>
> If you introduce external storage, it will break its design and bring
> other problems.
>
>
>
> Thanks, vino.
>
>
>
> 潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:02写道：
>
> Hi,
>
> "ram to cache the distinct data about sliding window" means I used
> computer momery not the third part db to cache the data need used in window.
>
> “the data need used in window” means ：such as the sliding window is 1
> hour, and I need to count the distinct users, I need to cache the user id
> about one hour.
>
> Cause there’re no related errors.
>
> Yours,
>
> September
>
>
>
> *发件人**:* vino yang <ya...@gmail.com>
> *发送时间**:* Wednesday, October 10, 2018 10:49:43 AM
> *抄送**:* user
> *主题**:* Re: No data issued by flink window after a few hours
>
>
>
> Hi,
>
>
>
> Can you explain what "ram to cache the distinct data about sliding window"
> mean?
>
> The information you provide is too small and will not help others to help
> you analyze the problem and provide advice.
>
>
>
> In addition, regarding the usage of Flink related issues, please only send
> mail to the user mailing list.
>
> The dev mailing list is mainly used to discuss development related issues.
>
>
>
> Thanks vino.
>
>
>
> ? ?? <pa...@hotmail.com> 于2018年10月10日周三 上午10:37写道：
>
> Hi all,
>     I used flink window, and when the job begins, we could get the results
> of windiow.But there’re no results issued after a few hours.
>     I found the job is still running and no errors, and the data not used
> window all can be issued.
>     By the way, I used Flink 1.3.2 and ram to cache the distinct data
> about sliding window.
>
> Yours,
>     September
>
>
>

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Please look at the mail below, the others were out of data cause the bad network.

Yours,
September

________________________________
发件人: 潘 功森 <pa...@hotmail.com>
发送时间: Friday, October 12, 2018 11:05:49 AM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

I found there are many checkpoints saved in the file.
But the watermarks also will be stoppped.

And there’re two enviroments.
The local running well, and the problem occurred on site.
There’re two differences:

1. Data amount very small in local and very huge on site.

2. On site configurations:

Akka.ask.timeout: 2min

Akka.lookup.timeout: 2min

Akka.client.timeout: 3min

Akka.log.lifecycle.events: on

Akka.tcp.timeout: 60s

But not configured at local.

So there’re any influences?

Please help me…

Yours,
September

Hi gongsen,

Thanks, vino.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

I found there are many checkpoints saved in the file.
But the watermarks also will be stoppped.

And there’re two enviroments.
The local running well, and the problem occurred on site.
There’re two differences:

1. Data amount very small in local and very huge on site.

2. On site configurations:

Akka.ask.timeout: 2min

Akka.lookup.timeout: 2min

Akka.client.timeout: 3min

Akka.log.lifecycle.events: on

Akka.tcp.timeout: 60s

But not configured at local.

So there’re any influences?

Please help me…

Yours,
September

Hi gongsen,

Thanks, vino.

Yours,
September

发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi，
Yes, I used event time.
I found watermarks fired normally when the job started, but it stopped and no changed after running hours.

Step1. As I used memory state backend and make max_state_sie and akka frame size bigger,and It also will stop after a few hours.
I found the error below:
[cid:image004.png@01D461B5.565D7FD0]
And the job restarted:
[cid:image007.png@01D461B5.565D7FD0]

Step 2.Then I configured fs state below:
[cid:image001.png@01D461B2.9B8C6790]

But the file is null, I think the configuration is wrong?
[cid:image002.png@01D461B2.CA63AD30]

Could you give me your advice?

Yours,
September

________________________________
发件人: vino yang <ya...@gmail.com>
发送时间: Thursday, October 11, 2018 2:56:40 PM
收件人: pangongsen@hotmail.com
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi gongsen,

Thanks, vino.

Yours,
September

________________________________
发件人: 潘 功森 <pa...@hotmail.com>>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

________________________________
发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 11:45:31 AM
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

________________________________
发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 11:33:48 AM
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Thanks, vino.

________________________________
发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

Re: No data issued by flink window after a few hours

Posted by vino yang <ya...@gmail.com>.

Hi gongsen,

Have you used event time as time semantics? If so, then the possible
problem is related to watermark.
Since I don't know the details of your program, it's hard to make a
conclusion. You can check if your watermark is firing normally.

Thanks, vino.


潘 功森 <pa...@hotmail.com> 于2018年10月11日周四 下午12:12写道：

> Hi，
>
> I changed as below configurations，and it looks fine when job started.
>
> But there’re no results issued when window ends after running about six
> hours, and no errors and exceptions.
>
> How can I position the question?
>
>
>
> Yours,
>
> September
>
>
> ------------------------------
> *发件人:* 潘 功森 <pa...@hotmail.com>
> *发送时间:* Wednesday, October 10, 2018 2:44:48 PM
> *收件人:* vino yang
> *抄送:* user
> *主题:* 答复: No data issued by flink window after a few hours
>
>
> Hi，
>
>
>
> Cause default state size in one hour is too small，and the max window size
> is 24 hours, so I used 500M.
>
>
>
> MemoryStateBackend stateBackend = new MemoryStateBackend(*MAX_STATE_SIZE*);//500M
> env.setStateBackend(stateBackend);
>
>
>
> And I found Irrespective of the configured maximal state size, the state
> cannot be larger than the akka frame size.
>
> So I add a config in flink-comf.yaml:
>
> akka.framesize: 524288000b
>
>
>
> What else do I have to pay attention to?
>
>
>
> Yours,
>
> September
>
>
> ------------------------------
> *发件人:* vino yang <ya...@gmail.com>
> *发送时间:* Wednesday, October 10, 2018 11:45:31 AM
> *收件人:* pangongsen@hotmail.com
> *抄送:* user
> *主题:* Re: No data issued by flink window after a few hours
>
> Hi,
>
> I saw the exception image you provided. Based on the exception message, it
> seems you used the default max state size (5MB).
>
> You can specify the max state size to override the default value. Try :
>
> *MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);*
>
> Please note that you need to reserve enough memory for Flink.
>
> Thanks, vino.
>
> 潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:36写道：
>
>> Please have a look about my last mail.
>>
>>
>>
>> When the cached window data is too large, how?
>>
>>
>>
>> Yours,
>>
>> September
>>
>>
>> ------------------------------
>> *发件人:* vino yang <ya...@gmail.com>
>> *发送时间:* Wednesday, October 10, 2018 11:33:48 AM
>> *收件人:* pangongsen@hotmail.com
>> *抄送:* user
>> *主题:* Re: No data issued by flink window after a few hours
>>
>> Hi,
>>
>> Did you mean "computer momery" referring to Memory Statebackend?
>> The Flink window mechanism is internally based on State, and this is done
>> for fault tolerance.
>> If you introduce external storage, it will break its design and bring
>> other problems.
>>
>> Thanks, vino.
>>
>> 潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:02写道：
>>
>>> Hi,
>>>
>>> "ram to cache the distinct data about sliding window" means I used
>>> computer momery not the third part db to cache the data need used in window.
>>>
>>> “the data need used in window” means ：such as the sliding window is 1
>>> hour, and I need to count the distinct users, I need to cache the user id
>>> about one hour.
>>>
>>> Cause there’re no related errors.
>>>
>>> Yours,
>>>
>>> September
>>>
>>>
>>> ------------------------------
>>> *发件人:* vino yang <ya...@gmail.com>
>>> *发送时间:* Wednesday, October 10, 2018 10:49:43 AM
>>> *抄送:* user
>>> *主题:* Re: No data issued by flink window after a few hours
>>>
>>> Hi,
>>>
>>> Can you explain what "ram to cache the distinct data about sliding
>>> window" mean?
>>> The information you provide is too small and will not help others to
>>> help you analyze the problem and provide advice.
>>>
>>> In addition, regarding the usage of Flink related issues, please only
>>> send mail to the user mailing list.
>>> The dev mailing list is mainly used to discuss development related
>>> issues.
>>>
>>> Thanks vino.
>>>
>>> ? ?? <pa...@hotmail.com> 于2018年10月10日周三 上午10:37写道：
>>>
>>>> Hi all,
>>>>     I used flink window, and when the job begins, we could get the
>>>> results of windiow.But there’re no results issued after a few hours.
>>>>     I found the job is still running and no errors, and the data not
>>>> used window all can be issued.
>>>>     By the way, I used Flink 1.3.2 and ram to cache the distinct data
>>>> about sliding window.
>>>>
>>>> Yours,
>>>>     September
>>>>
>>>

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi，
I changed as below configurations，and it looks fine when job started.
But there’re no results issued when window ends after running about six hours, and no errors and exceptions.
How can I position the question?

Yours,
September

________________________________
发件人: 潘 功森 <pa...@hotmail.com>
发送时间: Wednesday, October 10, 2018 2:44:48 PM
收件人: vino yang
抄送: user
主题: 答复: No data issued by flink window after a few hours

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

________________________________
发件人: vino yang <ya...@gmail.com>
发送时间: Wednesday, October 10, 2018 11:45:31 AM
收件人: pangongsen@hotmail.com
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

答复: 答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

The second question looks fine.
[cid:image004.png@01D461B6.93D6FF70]

Yours,
September

发件人: Dawid Wysakowicz<ma...@apache.org>
发送时间: 2018年10月11日 15:13
收件人: 潘 功森<ma...@hotmail.com>; vino yang<ma...@gmail.com>
抄送: user<ma...@flink.apache.org>
主题: Re: 答复: No data issued by flink window after a few hours

Hi,

I agree with Vino, that you should check if the watermark is progressing for all subtasks, if you are using event time semantics. If this is not the problem it would help if you could share the code of your job. By the way have you tried reproducing the problem with collection source?

Best,

Dawid

On 10/10/18 08:44, 潘 功森 wrote:
Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M

env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

发件人: vino yang <ya...@gmail.com>
发送时间: Wednesday, October 10, 2018 11:45:31 AM
收件人: pangongsen@hotmail.com<ma...@hotmail.com>
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

发件人: vino yang <ya...@gmail.com>>
发送时间: Wednesday, October 10, 2018 10:49:43 AM
抄送: user
主题: Re: No data issued by flink window after a few hours

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

Re: 答复: No data issued by flink window after a few hours

Posted by Dawid Wysakowicz <dw...@apache.org>.

Hi,

I agree with Vino, that you should check if the watermark is progressing
for all subtasks, if you are using event time semantics. If this is not
the problem it would help if you could share the code of your job. By
the way have you tried reproducing the problem with collection source?

Best,

Dawid

On 10/10/18 08:44, 潘 功森 wrote:

> Hi，
>
>  
>
> Cause default state size in one hour is too small，and the max window
> size is 24 hours, so I used 500M.
>
>  
>
> MemoryStateBackend stateBackend = new MemoryStateBackend(/MAX_STATE_SIZE/);//500M env.setStateBackend(stateBackend);
>
>  
>
> And I found Irrespective of the configured maximal state size, the
> state cannot be larger than the akka frame size.
>
> So I add a config in flink-comf.yaml:
>
> akka.framesize: 524288000b
>
>  
>
> What else do I have to pay attention to?
>
>  
>
> Yours,
>
> September
>
>  
>
> ------------------------------------------------------------------------
> *发件人:* vino yang <ya...@gmail.com>
> *发送时间:* Wednesday, October 10, 2018 11:45:31 AM
> *收件人:* pangongsen@hotmail.com
> *抄送:* user
> *主题:* Re: No data issued by flink window after a few hours
>  
> Hi,
>
> I saw the exception image you provided. Based on the exception
> message, it seems you used the default max state size (5MB).
>
> You can specify the max state size to override the default value. Try :
>
> /MemoryStateBackend stateBackend = new
> MemoryStateBackend(*theSizeOfBytes*);/
> /
> /
> Please note that you need to reserve enough memory for Flink.
>
> Thanks, vino.
>
> 潘 功森 <pangongsen@hotmail.com <ma...@hotmail.com>>
> 于2018年10月10日周三 上午11:36写道：
>
>     Please have a look about my last mail.
>
>      
>
>     When the cached window data is too large, how?
>
>      
>
>     Yours,
>
>     September
>
>      
>
>     ------------------------------------------------------------------------
>     *发件人:* vino yang <yanghua1127@gmail.com
>     <ma...@gmail.com>>
>     *发送时间:* Wednesday, October 10, 2018 11:33:48 AM
>     *收件人:* pangongsen@hotmail.com <ma...@hotmail.com>
>     *抄送:* user
>     *主题:* Re: No data issued by flink window after a few hours
>      
>     Hi,
>
>     Did you mean "computer momery" referring to Memory Statebackend? 
>     The Flink window mechanism is internally based on State, and this
>     is done for fault tolerance. 
>     If you introduce external storage, it will break its design and
>     bring other problems.
>
>     Thanks, vino.
>
>     潘 功森 <pangongsen@hotmail.com <ma...@hotmail.com>>
>     于2018年10月10日周三 上午11:02写道：
>
>         Hi,
>
>         "ram to cache the distinct data about sliding window" means I
>         used computer momery not the third part db to cache the data
>         need used in window.
>
>         “the data need used in window” means ：such as the sliding
>         window is 1 hour, and I need to count the distinct users, I
>         need to cache the user id about one hour.
>
>         Cause there’re no related errors.
>
>         Yours,
>
>         September
>
>          
>
>         ------------------------------------------------------------------------
>         *发件人:* vino yang <yanghua1127@gmail.com
>         <ma...@gmail.com>>
>         *发送时间:* Wednesday, October 10, 2018 10:49:43 AM
>         *抄送:* user
>         *主题:* Re: No data issued by flink window after a few hours
>          
>         Hi,
>
>         Can you explain what "ram to cache the distinct data about
>         sliding window" mean? 
>         The information you provide is too small and will not help
>         others to help you analyze the problem and provide advice.
>
>         In addition, regarding the usage of Flink related issues,
>         please only send mail to the user mailing list. 
>         The dev mailing list is mainly used to discuss development
>         related issues.
>
>         Thanks vino.
>
>         ? ?? <pangongsen@hotmail.com <ma...@hotmail.com>>
>         于2018年10月10日周三 上午10:37写道：
>
>             Hi all,
>                 I used flink window, and when the job begins, we could
>             get the results of windiow.But there’re no results issued
>             after a few hours.
>                 I found the job is still running and no errors, and
>             the data not used window all can be issued.
>                 By the way, I used Flink 1.3.2 and ram to cache the
>             distinct data about sliding window.
>
>             Yours,
>                 September
>

答复: No data issued by flink window after a few hours

Posted by 潘功森 <pa...@hotmail.com>.

Hi，

Cause default state size in one hour is too small，and the max window size is 24 hours, so I used 500M.

MemoryStateBackend stateBackend = new MemoryStateBackend(MAX_STATE_SIZE);//500M
env.setStateBackend(stateBackend);

And I found Irrespective of the configured maximal state size, the state cannot be larger than the akka frame size.
So I add a config in flink-comf.yaml:
akka.framesize: 524288000b

What else do I have to pay attention to?

Yours,
September

Hi,

I saw the exception image you provided. Based on the exception message, it seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com>> 于2018年10月10日周三 上午11:36写道：
Please have a look about my last mail.

When the cached window data is too large, how?

Yours,
September

Hi,

Thanks, vino.

Hi,

Can you explain what "ram to cache the distinct data about sliding window" mean?
The information you provide is too small and will not help others to help you analyze the problem and provide advice.

In addition, regarding the usage of Flink related issues, please only send mail to the user mailing list.
The dev mailing list is mainly used to discuss development related issues.

Thanks vino.

Yours,
September

Re: No data issued by flink window after a few hours

Posted by vino yang <ya...@gmail.com>.

Hi,

I saw the exception image you provided. Based on the exception message, it
seems you used the default max state size (5MB).

You can specify the max state size to override the default value. Try :

*MemoryStateBackend stateBackend = new MemoryStateBackend(theSizeOfBytes);*

Please note that you need to reserve enough memory for Flink.

Thanks, vino.

潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:36写道：

> Please have a look about my last mail.
>
>
>
> When the cached window data is too large, how?
>
>
>
> Yours,
>
> September
>
>
> ------------------------------
> *发件人:* vino yang <ya...@gmail.com>
> *发送时间:* Wednesday, October 10, 2018 11:33:48 AM
> *收件人:* pangongsen@hotmail.com
> *抄送:* user
> *主题:* Re: No data issued by flink window after a few hours
>
> Hi,
>
> Did you mean "computer momery" referring to Memory Statebackend?
> The Flink window mechanism is internally based on State, and this is done
> for fault tolerance.
> If you introduce external storage, it will break its design and bring
> other problems.
>
> Thanks, vino.
>
> 潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:02写道：
>
>> Hi,
>>
>> "ram to cache the distinct data about sliding window" means I used
>> computer momery not the third part db to cache the data need used in window.
>>
>> “the data need used in window” means ：such as the sliding window is 1
>> hour, and I need to count the distinct users, I need to cache the user id
>> about one hour.
>>
>> Cause there’re no related errors.
>>
>> Yours,
>>
>> September
>>
>>
>> ------------------------------
>> *发件人:* vino yang <ya...@gmail.com>
>> *发送时间:* Wednesday, October 10, 2018 10:49:43 AM
>> *抄送:* user
>> *主题:* Re: No data issued by flink window after a few hours
>>
>> Hi,
>>
>> Can you explain what "ram to cache the distinct data about sliding
>> window" mean?
>> The information you provide is too small and will not help others to help
>> you analyze the problem and provide advice.
>>
>> In addition, regarding the usage of Flink related issues, please only
>> send mail to the user mailing list.
>> The dev mailing list is mainly used to discuss development related issues.
>>
>> Thanks vino.
>>
>> ? ?? <pa...@hotmail.com> 于2018年10月10日周三 上午10:37写道：
>>
>>> Hi all,
>>>     I used flink window, and when the job begins, we could get the
>>> results of windiow.But there’re no results issued after a few hours.
>>>     I found the job is still running and no errors, and the data not
>>> used window all can be issued.
>>>     By the way, I used Flink 1.3.2 and ram to cache the distinct data
>>> about sliding window.
>>>
>>> Yours,
>>>     September
>>>
>>

Re: No data issued by flink window after a few hours

Posted by vino yang <ya...@gmail.com>.

Hi,

Did you mean "computer momery" referring to Memory Statebackend?
The Flink window mechanism is internally based on State, and this is done
for fault tolerance.
If you introduce external storage, it will break its design and bring other
problems.

Thanks, vino.

潘 功森 <pa...@hotmail.com> 于2018年10月10日周三 上午11:02写道：

> Hi,
>
> "ram to cache the distinct data about sliding window" means I used
> computer momery not the third part db to cache the data need used in window.
>
> “the data need used in window” means ：such as the sliding window is 1
> hour, and I need to count the distinct users, I need to cache the user id
> about one hour.
>
> Cause there’re no related errors.
>
> Yours,
>
> September
>
>
> ------------------------------
> *发件人:* vino yang <ya...@gmail.com>
> *发送时间:* Wednesday, October 10, 2018 10:49:43 AM
> *抄送:* user
> *主题:* Re: No data issued by flink window after a few hours
>
> Hi,
>
> Can you explain what "ram to cache the distinct data about sliding window"
> mean?
> The information you provide is too small and will not help others to help
> you analyze the problem and provide advice.
>
> In addition, regarding the usage of Flink related issues, please only send
> mail to the user mailing list.
> The dev mailing list is mainly used to discuss development related issues.
>
> Thanks vino.
>
> ? ?? <pa...@hotmail.com> 于2018年10月10日周三 上午10:37写道：
>
>> Hi all,
>>     I used flink window, and when the job begins, we could get the
>> results of windiow.But there’re no results issued after a few hours.
>>     I found the job is still running and no errors, and the data not used
>> window all can be issued.
>>     By the way, I used Flink 1.3.2 and ram to cache the distinct data
>> about sliding window.
>>
>> Yours,
>>     September
>>
>