Understanding Spark tuning with auto-tuning; or, Magical spells to stop your pager going off at 2:00am @ Strata EU 2018

Thanks for joining us (@holdenkarau,@warre_n_peace) on 2018-05-23 at Strata EU 2018 London, UK for Understanding Spark tuning with auto-tuning; or, Magical spells to stop your pager going off at 2:00am.The talk covered:

Apache Spark is an amazing distributed system, but part of the bargain weve made with the infrastructure deamons involves providing the correct set of magic numbers (aka tuning) or our jobs may be eaten by Cthulhu. Tuning Apache Spark is somewhat of a dark art, although thankfully, when it goes wrong, all we tend to lose is several hours of our day and our employers money. Holden Karau, Rachel Warren, and Anya Bida explore auto-tuning jobs using both historical and live job information, using systems like Apache BEAM, Mahout, and internal Spark ML jobs as workloads. Much of the data required to effectively tune jobs is already collected inside of Spark. You just need to understand it. Holden, Rachel, and Anya outline sample auto-tuners and discuss the options for improving them and applying similar techniques in your own work. They also discuss what kind of tuning can be done statically (e.g., without depending on historic information) and look at Sparks own built-in components for auto-tuning (currently dynamically scaling cluster size) and how you can improve them. Even if the idea of building an auto-tuner sounds as appealing as using a rusty spoon to debug the JVM on a haunted supercomputer, this talk will give you a better understanding of the knobs available to you to tune your Apache Spark jobs. Also, to be clear, Holden, and Rachel dont promise to stop your pager going off at 2:00am, but hopefully this helps.

.

The slides are at http://bit.ly/2MJbx2Y.The video of the talk is up at http://bit.ly/2NjJCvO.

Comment bellow to join in the discussion :).Talk feedback is appreciated at http://bit.ly/holdenTalkFeedback

Comments

Post a Comment

Popular posts from this blog

New year new job, same projects

 I’m stoked to announce that I’ve joined Snowflake to continue working on OSS Apache Spark :) I’ve got a post on the Snowflake blog talking about the work we’re doing  https://careers.snowflake.com/us/en/blogarticle/building-apache-spark-in-the-open-at-snowflake  — 
Read more

Making Hibernate work on Ubuntu 22.04 (jammy) on the Framework Laptop w/full disk encryption

  Making Hibernate work on Ubuntu 22.04 (jammy) on the Framework Laptop w/full disk encryption The 0th step is disabling secure boot in the bios (reboot, press F2 to get into the BIOS, disable secure boot). The first step is to make a swapfile large enough for your device to suspend to. sudo swapoff /swapfile sudo dd if = /dev/zero of = /swapfile bs = $( cat /proc/meminfo | awk '/MemTotal/ {print $2}' ) count =1024 conv = notrunc sudo mkswap /swapfile sudo swapon /swapfile Then make sure it's enabled on reboot, e.g: echo '/swapfile swap swap defaults 0 0' | sudo tee -a /etc/fstab If there is another swap partition or file in /etc/fstab you may need to take it out. Find the device your swapfile is located on (e.g. findmnt  -no source -T /swapfile ), note here some guides recommend using the UUID, in my experience, this resulted in some errors. To find the resume offset of your file run filefrag -v /swapfile and then look at the first value under physical_offset...
Read more

Unexpected gmail account name disclosure on calendars

Image
I came across a an interesting blog post showing how to get the name of a Gmail account. Since the bug was visible through Google Calendars I hoped that it was maybe limited to users who had signed up for Google Calendar. This is not the case. The steps that I followed: 1)Register brand new gmail account with default settings register new Gmail account 2)Go to google calendars (as a different user) select a calender invite the user to share one of my calendars (click on the down arrow next to your calendar) choose a calendar to invite the user to share 3)Invite the user Invite the user to share your calendar 4)Save the changes (note that it indicates the user isn't registered for Google Calendars) & go back Invite user to Google Calendars 5)See the users name see the username Normally I'm all for notifying the company of the problem before public disclosures, but the cat is well out of the bag and having a walk around. It apparently works regardless of whether the user is ...
Read more