Re: Flink application does not scale as expected, please help!

2018-06-19 Thread Siew Wai Yow
abian Hueske; Jörn Franke; user Subject: Re: Flink application does not scale as expected, please help! Hi, as Fabian explained, if you exceed the number of slots on a single TM, then Flink needs to deploy tasks on other TMs which causes a network transfer between the sources and the mappers. This

Re: Flink application does not scale as expected, please help!

2018-06-19 Thread Fabian Hueske
*Cc:* Siew Wai Yow; Jörn Franke; user@flink.apache.org > *Subject:* Re: Flink application does not scale as expected, please help! > > Hi all, > > Allow me to add some comments/questions on this issue that is very > interesting. > According to documentation [1] the pipeline exa

Re: Flink application does not scale as expected, please help!

2018-06-19 Thread Till Rohrmann
ing to know too. @Till do you mind to share > your thoughts? > > Thank you guys! > > -- > *From:* Ovidiu-Cristian MARCU > *Sent:* Monday, June 18, 2018 6:28 PM > *To:* Fabian Hueske > *Cc:* Siew Wai Yow; Jörn Franke; user@flink.apache.org >

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Siew Wai Yow
o you mind to share your thoughts? Thank you guys! From: Ovidiu-Cristian MARCU Sent: Monday, June 18, 2018 6:28 PM To: Fabian Hueske Cc: Siew Wai Yow; Jörn Franke; user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! Hi a

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Ovidiu-Cristian MARCU
parallelism 16. Is > this something expected? Thank you. > > Regards, > Yow > > From: Fabian Hueske mailto:fhue...@gmail.com>> > Sent: Monday, June 18, 2018 3:47 PM > To: Siew Wai Yow > Cc: Jörn Franke; user@flink.apache.org <mailto:user@flink.apache.org> &g

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Fabian Hueske
day, June 18, 2018 3:47 PM > *To:* Siew Wai Yow > *Cc:* Jörn Franke; user@flink.apache.org > > *Subject:* Re: Flink application does not scale as expected, please help! > > Hi, > > Which Flink version are you using? > Did you try to analyze the bottleneck of the application,

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Siew Wai Yow
*additional info in bold. From: Siew Wai Yow Sent: Monday, June 18, 2018 3:57 PM To: Fabian Hueske Cc: Jörn Franke; user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! Hi Fabian, We are using Flink 1.5.0. Any

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Siew Wai Yow
anke; user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! Hi, Which Flink version are you using? Did you try to analyze the bottleneck of the application, i.e., is it CPU, disk IO, or network bound? Regarding the task scheduling. AFAIK, before version 1.5.0, Flin

Re: Flink application does not scale as expected, please help!

2018-06-18 Thread Fabian Hueske
rn Franke > *Sent:* Saturday, June 16, 2018 6:03 PM > > *To:* Siew Wai Yow > *Cc:* user@flink.apache.org > *Subject:* Re: Flink application does not scale as expected, please help! > > Can you share the app source on gitlab, github or bitbucket etc? > > On 16. Jun 2018, at 11

Re: Flink application does not scale as expected, please help!

2018-06-16 Thread Siew Wai Yow
Hi Jorn, Please find the source @https://github.com/swyow/flink_sample_git Thank you! From: Jörn Franke Sent: Saturday, June 16, 2018 6:03 PM To: Siew Wai Yow Cc: user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! Can

Re: Flink application does not scale as expected, please help!

2018-06-16 Thread Jörn Franke
gt; Yow > > From: Jörn Franke > Sent: Saturday, June 16, 2018 4:46 PM > To: Siew Wai Yow > Cc: user@flink.apache.org > Subject: Re: Flink application does not scale as expected, please help! > > How large is the input data? If the input data is very small then it does no

Re: Flink application does not scale as expected, please help!

2018-06-16 Thread Siew Wai Yow
less I get? From: Siew Wai Yow Sent: Saturday, June 16, 2018 5:09 PM To: Jörn Franke Cc: user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! Hi Jorn, the input data is 1kb per record, in production it will have 10 billions

Re: Flink application does not scale as expected, please help!

2018-06-16 Thread Siew Wai Yow
Siew Wai Yow Cc: user@flink.apache.org Subject: Re: Flink application does not scale as expected, please help! How large is the input data? If the input data is very small then it does not make sense to scale it even more. The larger the data is the more parallelism you will have. You can modify

Re: Flink application does not scale as expected, please help!

2018-06-16 Thread Jörn Franke
How large is the input data? If the input data is very small then it does not make sense to scale it even more. The larger the data is the more parallelism you will have. You can modify this behavior of course by changing the partition on the Dataset. > On 16. Jun 2018, at 10:41, Siew Wai Yow