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InjectErr

A simple python framework to inject errors while running HiBench workloads on Hadoop and collecting logs

Installation

InjectErr uses poetry:

poetry shell # optional, only use it if you want to install this in a venv
poetry install

Usage

First, let's understand the injections.yml file

username: hadoop # Username of all the nodes
master_host: node-master # Hostname of master nodes
slave_nodes: # Hostnames of slave nodes
  - node1
  - node2
ssh_key_path: /home/wantguns/.ssh/id_ed25519 # path to SSH priv key for logging in to all the nodes

injections:
  fill_ram: # Injection name
    desc: "Fill RAM completely" # Injection Desc
    dataset_size: small # Hibench profile scale, can be [tiny, small, huge, etc] 
    workload: micro/wordcount # Hibench workload to run
    waittime: 10 # Time to wait before injecting the error
    how: | # Shell commands which perform the injection
      timeout -k 95 90 cat /dev/random > /dev/shm/fillitup

To run InjectErr, simply execute the installed script:

$ injecterr

It will read the injections.yml file from the current working directory, perform the injections and then finally copy logs from all the nodes to a local folder named logs and label them.