Author Archives: Francesco Sorrentino

Quality Assurance at Cloudera: Highly-Controlled Disk Injection

Categories: CDH Testing Tools

Recently installed fault-injection techniques are making quality assurance processes yet more rigorous.

In a previous installment of our series about quality assurance inside Cloudera, we described the fault-injection frameworks (AgenTEST and Sapper) that Cloudera Engineering has devised. The fault-injection framework starts and stops injections, to determine when and how they should occur, respectively.

On that occasion, we presented a number of disk-related injections implemented in AgenTEST, including:

  • BurnIO: Runs disk-intensive processes,

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Quality Assurance at Cloudera: Fault Injection and Elastic Partitioning

Categories: CDH Testing

In this installment of our series about how quality assurance is done at Cloudera, learn about the important role of fault injection in the overall process.

Apache Hadoop is the consummate example of a scalable distributed system (SDS); such systems are designed to provide 24/7 services reliably and to scale elastically with the addition of industry-standard hardware cost-effectively. They must be resilient and fault-tolerant to various environmental anomalies.

As you would expect,

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