subject:"Understanding Messages in the Debug.log"

Re: Understanding Messages in the Debug.log

2017-09-22 Thread Alex Kotelnikov

I see a lot of that on one of our clusters.

There is pretty much no load on it. Clocks are quite well synchronized.

date +start:%H:%M:%S.%N ; for d in 2 3 4 5 6 8 9; do ssh 10.3.0.17$d  date
+%H:%M:%S.%N & done;date +end:%H:%M:%S.%N

start:01:22:45.478726356
end:01:22:45.480993049
01:22:45.570313246
01:22:45.572781468
01:22:45.584917988
01:22:45.595550249
01:22:45.595120011
01:22:45.598196670
01:22:45.863486947

That is 3.0.9. I see the log message ~2000 times an hour

On another cluster, 3.11 I see it happening ~5 times an hour.

On 22 September 2017 at 01:23, Nate McCall  wrote:

>
>> The message in the debug log is
>>
>> DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 -
>> Ignoring interval time of 2000275419
>>
>>
>>
> Did you truncate the log message? There should be and "for [endpoint]" on
> the end which should help you narrow things down to a set of problem nodes.
> I agree with Jeff in that this is most likely NTP sync issue or network
> flap, though.
>



-- 

Best Regards,


*Alexander Kotelnikov*

*Team Lead*

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Re: Understanding Messages in the Debug.log

2017-09-21 Thread Nate McCall

>
>
> The message in the debug log is
>
> DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 -
> Ignoring interval time of 2000275419
>
>
>
Did you truncate the log message? There should be and "for [endpoint]" on
the end which should help you narrow things down to a set of problem nodes.
I agree with Jeff in that this is most likely NTP sync issue or network
flap, though.

RE: Understanding Messages in the Debug.log

2017-09-21 Thread Jonathan Baynes

Thanks Jeff,

They are on all instances of the cluster, with the same timeframe (give or 
take).

Ill look into your suggestions., thank you for your guidance.

From: Jeff Jirsa [mailto:jji...@gmail.com]
Sent: 21 September 2017 12:48
To: user@cassandra.apache.org
Subject: Re: Understanding Messages in the Debug.log

Could also be a network hiccup, an NTP problem, a disk pause, or anything that 
causes a long gc pause including misconfigured heap. Are they all on the same 
machine? Or all instances in the cluster?

If there are so many you need to root cause it, you probably want to look for 
correlation with other entries in the debug log, or start inspecting the 
heap/thread pools with some combination of tpstats and dumping the heap and 
looking at the running threads may give you an indication of what’s going on.

--
Jeff Jirsa

On Sep 21, 2017, at 4:37 AM, Jonathan Baynes 
<jonathan.bay...@tradeweb.com<mailto:jonathan.bay...@tradeweb.com>> wrote:
Thanks Jacob,

I’ve already seen this, but it doesn’t answer my question, as this is a 
production Cluster, which at present, has no data and is not being written too, 
its being built to go live shortly, so with no data, a Keyspace with a table 
designed but no data in it, only system databases, what on earth could be 
causing load on the cluster to cause the error message??

From: Jacob Shadix [mailto:jacobsha...@gmail.com]
Sent: 21 September 2017 12:34
To: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
Subject: Re: Understanding Messages in the Debug.log

check out this thread - 
https://www.mail-archive.com/user@cassandra.apache.org/msg52313.html<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.mail-2Darchive.com_user-40cassandra.apache.org_msg52313.html=DwMFaQ=sA0VaJZJFLZREu2pbPeqjXHJ-Wd9NNzgHW3gpUOLSSk=CNKccIKIKCVbYTu1VxR8dIOP6NLpf4fYjidpNm-diQ8=0LpreILsiIHqijRbJ-hSyC7R1Hq3hMhquXS3xcIDLjo=T5vuzfn8ElJgnkkZ4sQTkQUMwN-_GEOacqRbeVayQUQ=>

-- Jacob Shadix

On Thu, Sep 21, 2017 at 4:56 AM, Jonathan Baynes 
<jonathan.bay...@tradeweb.com<mailto:jonathan.bay...@tradeweb.com>> wrote:
Good Morning Community,

Can anyone help me understand what these messages (and I have a lot of them in 
the log) mean, they must be a symptom of something but I am unsure how to 
starting working this out.

I’m using C* 3.0.11, CQL 5.0.1.

I have 6 node ring over 2 DC’s (3 in each DC) each of the nodes has this 
message in the log.

The message in the debug log is
DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 - 
Ignoring interval time of 2000275419

There are so many of these messages, I’d like to find the root cause of this, 
if anyone could help that would be great. Or if they can be ignored, how do I 
supress these?

Thanks
J

Jonathan Baynes
DBA
Tradeweb Europe Limited
Moor Place  •  1 Fore Street 
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Re: Understanding Messages in the Debug.log

2017-09-21 Thread Jeff Jirsa

Could also be a network hiccup, an NTP problem, a disk pause, or anything that 
causes a long gc pause including misconfigured heap. Are they all on the same 
machine? Or all instances in the cluster?

If there are so many you need to root cause it, you probably want to look for 
correlation with other entries in the debug log, or start inspecting the 
heap/thread pools with some combination of tpstats and dumping the heap and 
looking at the running threads may give you an indication of what’s going on.

--
Jeff Jirsa


> On Sep 21, 2017, at 4:37 AM, Jonathan Baynes <jonathan.bay...@tradeweb.com> 
> wrote:
> 
> Thanks Jacob,
>  
> I’ve already seen this, but it doesn’t answer my question, as this is a 
> production Cluster, which at present, has no data and is not being written 
> too, its being built to go live shortly, so with no data, a Keyspace with a 
> table designed but no data in it, only system databases, what on earth could 
> be causing load on the cluster to cause the error message??
>  
>  
>  
> From: Jacob Shadix [mailto:jacobsha...@gmail.com] 
> Sent: 21 September 2017 12:34
> To: user@cassandra.apache.org
> Subject: Re: Understanding Messages in the Debug.log
>  
> check out this thread - 
> https://www.mail-archive.com/user@cassandra.apache.org/msg52313.html
> 
> -- Jacob Shadix 
>  
> On Thu, Sep 21, 2017 at 4:56 AM, Jonathan Baynes 
> <jonathan.bay...@tradeweb.com> wrote:
> Good Morning Community,
>  
> Can anyone help me understand what these messages (and I have a lot of them 
> in the log) mean, they must be a symptom of something but I am unsure how to 
> starting working this out.
>  
> I’m using C* 3.0.11, CQL 5.0.1.
>  
> I have 6 node ring over 2 DC’s (3 in each DC) each of the nodes has this 
> message in the log.
>  
> The message in the debug log is
> DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 - 
> Ignoring interval time of 2000275419
>  
>  
> There are so many of these messages, I’d like to find the root cause of this, 
> if anyone could help that would be great. Or if they can be ignored, how do I 
> supress these?
>  
> Thanks
> J
>  
> Jonathan Baynes
> DBA
> Tradeweb Europe Limited
> Moor Place  •  1 Fore Street Avenue  •  London EC2Y 9DT
> P +44 (0)20 77760988  •  F +44 (0)20 7776 3201  •  M +44 (0) xx
> jonathan.bay...@tradeweb.com
>  
>follow us: 
> —
> A leading marketplace for electronic fixed income, derivatives and ETF trading
>  
> 
> 
> This e-mail may contain confidential and/or privileged information. If you 
> are not the intended recipient (or have received this e-mail in error) please 
> notify the sender immediately and destroy it. Any unauthorized copying, 
> disclosure or distribution of the material in this e-mail is strictly 
> forbidden. Tradeweb reserves the right to monitor all e-mail communications 
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> visit our website @ www.tradeweb.com.
> 
>  
> 
> 
> This e-mail may contain confidential and/or privileged information. If you 
> are not the intended recipient (or have received this e-mail in error) please 
> notify the sender immediately and destroy it. Any unauthorized copying, 
> disclosure or distribution of the material in this e-mail is strictly 
> forbidden. Tradeweb reserves the right to monitor all e-mail communications 
> through its networks. If you do not wish to receive marketing emails about 
> our products / services, please let us know by contacting us, either by email 
> at contac...@tradeweb.com or by writing to us at the registered office of 
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Re: Understanding Messages in the Debug.log

2017-09-21 Thread Milan Milosevic

The message is caused by the Gossip message exchanged. It doesn't have
anything to do with the load on the cluster. I asked the same question on
the datastax slack. This is the answer from one of the Datastax engineers
(Erick Ramirez):

"`FailureDetector` checks if a node hasn't responded for 5 seconds before
marking it as down, otherwise it doesn't do anything (ignores) if last
response was within 5 seconds (`2002779703` 2 secs in your case)
what i'm trying to say is that you don't have to worry about anything"

On Thu, Sep 21, 2017 at 1:37 PM, Jonathan Baynes <
jonathan.bay...@tradeweb.com> wrote:

> Thanks Jacob,
>
>
>
> I’ve already seen this, but it doesn’t answer my question, as this is a
> production Cluster, which at present, has no data and is not being written
> too, its being built to go live shortly, so with no data, a Keyspace with a
> table designed but no data in it, only system databases, what on earth
> could be causing load on the cluster to cause the error message??
>
>
>
>
>
>
>
> *From:* Jacob Shadix [mailto:jacobsha...@gmail.com]
> *Sent:* 21 September 2017 12:34
> *To:* user@cassandra.apache.org
> *Subject:* Re: Understanding Messages in the Debug.log
>
>
>
> check out this thread - https://www.mail-archive.
> com/user@cassandra.apache.org/msg52313.html
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.mail-2Darchive.com_user-40cassandra.apache.org_msg52313.html=DwMFaQ=sA0VaJZJFLZREu2pbPeqjXHJ-Wd9NNzgHW3gpUOLSSk=CNKccIKIKCVbYTu1VxR8dIOP6NLpf4fYjidpNm-diQ8=0LpreILsiIHqijRbJ-hSyC7R1Hq3hMhquXS3xcIDLjo=T5vuzfn8ElJgnkkZ4sQTkQUMwN-_GEOacqRbeVayQUQ=>
>
>
> -- Jacob Shadix
>
>
>
> On Thu, Sep 21, 2017 at 4:56 AM, Jonathan Baynes <
> jonathan.bay...@tradeweb.com> wrote:
>
> Good Morning Community,
>
>
>
> Can anyone help me understand what these messages (and I have a lot of
> them in the log) mean, they must be a symptom of something but I am unsure
> how to starting working this out.
>
>
>
> I’m using C* 3.0.11, CQL 5.0.1.
>
>
>
> I have 6 node ring over 2 DC’s (3 in each DC) each of the nodes has this
> message in the log.
>
>
>
> The message in the debug log is
>
> DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 -
> Ignoring interval time of 2000275419
>
>
>
>
>
> There are so many of these messages, I’d like to find the root cause of
> this, if anyone could help that would be great. Or if they can be ignored,
> how do I supress these?
>
>
>
> Thanks
>
> J
>
>
>
> *Jonathan Baynes*
>
> DBA
> Tradeweb Europe Limited
>
> Moor Place  •  1 Fore Street Avenue
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__maps.google.com_-3Fq-3D1-2BFore-2BStreet-2BAvenue-25C2-25A0-25C2-25A0-25E2-2580-25A2-25C2-25A0-25C2-25A0London-2BEC2Y-2B9DT-26entry-3Dgmail-26source-3Dg=DwMFaQ=sA0VaJZJFLZREu2pbPeqjXHJ-Wd9NNzgHW3gpUOLSSk=CNKccIKIKCVbYTu1VxR8dIOP6NLpf4fYjidpNm-diQ8=0LpreILsiIHqijRbJ-hSyC7R1Hq3hMhquXS3xcIDLjo=8MElkv-02VTEMtwP2-AvmBTjsk3O-VMBNd3JtOBzp1o=>
>   •
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RE: Understanding Messages in the Debug.log

2017-09-21 Thread Jonathan Baynes

Thanks Jacob,

I’ve already seen this, but it doesn’t answer my question, as this is a 
production Cluster, which at present, has no data and is not being written too, 
its being built to go live shortly, so with no data, a Keyspace with a table 
designed but no data in it, only system databases, what on earth could be 
causing load on the cluster to cause the error message??



From: Jacob Shadix [mailto:jacobsha...@gmail.com]
Sent: 21 September 2017 12:34
To: user@cassandra.apache.org
Subject: Re: Understanding Messages in the Debug.log

check out this thread - 
https://www.mail-archive.com/user@cassandra.apache.org/msg52313.html<https://urldefense.proofpoint.com/v2/url?u=https-3A__www.mail-2Darchive.com_user-40cassandra.apache.org_msg52313.html=DwMFaQ=sA0VaJZJFLZREu2pbPeqjXHJ-Wd9NNzgHW3gpUOLSSk=CNKccIKIKCVbYTu1VxR8dIOP6NLpf4fYjidpNm-diQ8=0LpreILsiIHqijRbJ-hSyC7R1Hq3hMhquXS3xcIDLjo=T5vuzfn8ElJgnkkZ4sQTkQUMwN-_GEOacqRbeVayQUQ=>

-- Jacob Shadix

On Thu, Sep 21, 2017 at 4:56 AM, Jonathan Baynes 
<jonathan.bay...@tradeweb.com<mailto:jonathan.bay...@tradeweb.com>> wrote:
Good Morning Community,

Can anyone help me understand what these messages (and I have a lot of them in 
the log) mean, they must be a symptom of something but I am unsure how to 
starting working this out.

I’m using C* 3.0.11, CQL 5.0.1.

I have 6 node ring over 2 DC’s (3 in each DC) each of the nodes has this 
message in the log.

The message in the debug log is
DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 - 
Ignoring interval time of 2000275419


There are so many of these messages, I’d like to find the root cause of this, 
if anyone could help that would be great. Or if they can be ignored, how do I 
supress these?

Thanks
J

Jonathan Baynes
DBA
Tradeweb Europe Limited
Moor Place  •  1 Fore Street 
Avenue<https://urldefense.proofpoint.com/v2/url?u=https-3A__maps.google.com_-3Fq-3D1-2BFore-2BStreet-2BAvenue-25C2-25A0-25C2-25A0-25E2-2580-25A2-25C2-25A0-25C2-25A0London-2BEC2Y-2B9DT-26entry-3Dgmail-26source-3Dg=DwMFaQ=sA0VaJZJFLZREu2pbPeqjXHJ-Wd9NNzgHW3gpUOLSSk=CNKccIKIKCVbYTu1VxR8dIOP6NLpf4fYjidpNm-diQ8=0LpreILsiIHqijRbJ-hSyC7R1Hq3hMhquXS3xcIDLjo=8MElkv-02VTEMtwP2-AvmBTjsk3O-VMBNd3JtOBzp1o=>
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Re: Understanding Messages in the Debug.log

2017-09-21 Thread Jacob Shadix

check out this thread -
https://www.mail-archive.com/user@cassandra.apache.org/msg52313.html

-- Jacob Shadix

On Thu, Sep 21, 2017 at 4:56 AM, Jonathan Baynes <
jonathan.bay...@tradeweb.com> wrote:

> Good Morning Community,
>
>
>
> Can anyone help me understand what these messages (and I have a lot of
> them in the log) mean, they must be a symptom of something but I am unsure
> how to starting working this out.
>
>
>
> I’m using C* 3.0.11, CQL 5.0.1.
>
>
>
> I have 6 node ring over 2 DC’s (3 in each DC) each of the nodes has this
> message in the log.
>
>
>
> The message in the debug log is
>
> DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 -
> Ignoring interval time of 2000275419
>
>
>
>
>
> There are so many of these messages, I’d like to find the root cause of
> this, if anyone could help that would be great. Or if they can be ignored,
> how do I supress these?
>
>
>
> Thanks
>
> J
>
>
>
> *Jonathan Baynes*
>
> DBA
> Tradeweb Europe Limited
>
> Moor Place  •  1 Fore Street Avenue
> 
>   •  London EC2Y 9DT
> 
> P +44 (0)20 77760988  •  F +44 (0)20 7776 3201  •  M +44 (0) xx
>
> jonathan.bay...@tradeweb.com
>
>
>
> [image: cid:image001.jpg@01CD26AD.4165F110] 
> follow us:  *[image: cid:image002.jpg@01CD26AD.4165F110]*
>    [image:
> cid:image003.jpg@01CD26AD.4165F110] 
>
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> electronic fixed income, derivatives and ETF trading
>
>
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Understanding Messages in the Debug.log

2017-09-21 Thread Jonathan Baynes

Good Morning Community,

Can anyone help me understand what these messages (and I have a lot of them in 
the log) mean, they must be a symptom of something but I am unsure how to 
starting working this out.

I'm using C* 3.0.11, CQL 5.0.1.

I have 6 node ring over 2 DC's (3 in each DC) each of the nodes has this 
message in the log.

The message in the debug log is
DEBUG [GossipStage:1] 2017-09-21 09:19:52,627 FailureDetector.java:456 - 
Ignoring interval time of 2000275419


There are so many of these messages, I'd like to find the root cause of this, 
if anyone could help that would be great. Or if they can be ignored, how do I 
supress these?

Thanks
J

Jonathan Baynes
DBA
Tradeweb Europe Limited
Moor Place  *  1 Fore Street Avenue  *  London EC2Y 9DT
P +44 (0)20 77760988  *  F +44 (0)20 7776 3201  *  M +44 (0) xx
jonathan.bay...@tradeweb.com

[cid:image001.jpg@01CD26AD.4165F110]   follow us:  
[cid:image002.jpg@01CD26AD.4165F110] 

[cid:image003.jpg@01CD26AD.4165F110] 
-
A leading marketplace for electronic 
fixed income, derivatives and ETF trading




This e-mail may contain confidential and/or privileged information. If you are 
not the intended recipient (or have received this e-mail in error) please 
notify the sender immediately and destroy it. Any unauthorized copying, 
disclosure or distribution of the material in this e-mail is strictly 
forbidden. Tradeweb reserves the right to monitor all e-mail communications 
through its networks. If you do not wish to receive marketing emails about our 
products / services, please let us know by contacting us, either by email at 
contac...@tradeweb.com or by writing to us at the registered office of Tradeweb 
in the UK, which is: Tradeweb Europe Limited (company number 3912826), 1 Fore 
Street Avenue London EC2Y 9DT. To see our privacy policy, visit our website @ 
www.tradeweb.com.

Re: Understanding Messages in the Debug.log

Re: Understanding Messages in the Debug.log

RE: Understanding Messages in the Debug.log

Re: Understanding Messages in the Debug.log

Re: Understanding Messages in the Debug.log

RE: Understanding Messages in the Debug.log

Re: Understanding Messages in the Debug.log

Understanding Messages in the Debug.log

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