slitayem

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

slitayem

List all Yarn aplications in ACCEPTED state

for x in $(yarn application -list -appStates ACCEPTED | awk 'NR > 2 { print $1 }'); do yarn application -kill $x; done

Kill all aplications in RUNNING state

for x in $(yarn application -list -appStates RUNNING | awk 'NR > 2 { print $1 }'); do yarn application -kill $x; done

Kill al spark applications

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import seaborn as sns
import matplotlib.pyplot as plt
from sklearn.metrics import confusion_matrix
import numpy as np

def plot_confusion_matrix(cf_matrix, target_names=None):
  """Plot annotated confusion matrix with absolute values and percentages
     Args: 
       cf_matrix: ndarray of shape (2, 2) Confusion Matrix 
  """

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Push a remote branch to a new remote branch

1. Add new target remote locally

git remote add <new-remote-name> <new-remote-utl>

git push <new-remote-name> <branch-to-push>:<new-remote-branch>

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      Tags:
      - Key: Name
        Value:
          !Join ['_', [ ec2, "Fn::ImportValue" : {"Fn::Sub":'${BaseStackName}-Environment'}, test2]]
          #This will create a name tag with value: ec2_<yourValueFromOtherStack>_test2

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git clone https://github.com/coursera-dl/coursera-dl
cd coursera-dl
mkvirtualenv venv --python=`which python3`
pip3 install -r requirements.txt
./coursera-dl -u <Email-id> -p <Password> --subtitle-language en <course-title>

The coursera title is taken from the course url https://www.coursera.org/learn/

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Get the latest revision of MyTaskDefinition

aws ecs list-task-definitions --family-prefix MyTaskDefinition | jq --raw-output .taskDefinitionArns[0][-1:]

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A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

For more about AWS and AWS Certifications and updates to this Gist you should follow me @leonardofed

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slitayem

# show existing tab with 4 spaces width
set tabstop=4
# when indenting with '>', use 4 spaces width
set shiftwidth=4
# On pressing tab, insert 4 spaces
set expandtab