Matillion ETL Job Concurrency Overview
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Questions and Answers

What determines the maximum number of processes that can run inside a single Matillion ETL job?

  • Number of job submissions
  • Number of vCPUs on the instance (correct)
  • Instance storage capacity
  • Number of scheduled jobs

    • What type of queue is used when a Matillion ETL job is submitted?

  • Unbounded queue (correct)
  • Priority queue
  • Fixed-size queue
  • Circular queue

    • How many jobs can run concurrently by default in all Matillion ETL instances?

  • 20 jobs
  • 12 jobs
  • 16 jobs (correct)
  • 8 jobs

    • What happens when multiple runs of the same job are queued behind each other?

    <p>They run sequentially</p> Signup and view all the answers

    How do long-running jobs submitted to Matillion ETL potentially affect scheduled jobs?

    <p>They delay the scheduled jobs</p> Signup and view all the answers

    What determines the maximum number of concurrent processes that a single job execution can run in Matillion ETL?

    <p>$n^2$ where n is the number of vCPUs on the instance</p> Signup and view all the answers

    What is the potential issue when users launch Matillion ETL with instance types that have many more vCPUs?

    <p>Concurrency conflicts with scheduled jobs</p> Signup and view all the answers

    What is a consequence of a long-running job conflicting with a scheduled job in Matillion ETL?

    <p>The scheduled job is delayed</p> Signup and view all the answers

    Which factor is NOT mentioned as affecting the concurrent running of jobs in Matillion ETL?

    <p>$Quartz$ scheduler</p> Signup and view all the answers

    What increases as the number of vCPUs on an instance increases in Matillion ETL?

    <p>The number of available processes for a single job execution</p> Signup and view all the answers

    What pattern is recommended in the scenarios described?

    <p>Micro-batching</p> Signup and view all the answers

    How are validation tasks handled in Matillion ETL?

    <p>Through the task runner and queued behind running jobs</p> Signup and view all the answers

    What happens when the maximum concurrency limit is reached in Matillion ETL?

    <p>Development may experience long validation times</p> Signup and view all the answers

    In an HA Cluster for Matillion ETL, how are jobs distributed across nodes?

    <p>Essentially randomly</p> Signup and view all the answers

    Why is it important to make jobs idempotent in an HA Cluster?

    <p>To handle scenarios where nodes fail and jobs need to be re-submitted</p> Signup and view all the answers

    What is the implication of running multiple instances of the same transformation job at once without using a shared job?

    <p>It will result in errors due to inability to run in parallel</p> Signup and view all the answers

    What behavior is exhibited when using a Run Orchestration component?

    <p>Sub jobs do not queue, as queuing is done at the top level</p> Signup and view all the answers

    What feature in Matillion allows users to run multiple ETL jobs across multiple connections?

    <p>'Multiple Environment Connections' feature</p> Signup and view all the answers

    How many threads does a job running in Matillion ETL have by default?

    <p>$2*n$ Vcores</p> Signup and view all the answers

    What is not relevant to Matillion ETL for BigQuery?

    <p>HA Clusters for BigQuery</p> Signup and view all the answers

    What action must be taken for any changes made within the administrative tools to take effect in Matillion ETL?

    <p>SSL Restart Server</p> Signup and view all the answers

    Which administrative tool opens the Matillion ETL Updates pop-up window?

    <p>User Configuration</p> Signup and view all the answers

    Why is the User Configuration option unavailable in HA (clustered) instances of Matillion ETL?

    <p>LDAP is used by default</p> Signup and view all the answers

    Which Admin menu option in Matillion ETL provides access to manage database drivers?

    <p>Manage Database Drivers</p> Signup and view all the answers

    What should users do when an error occurs in Matillion ETL to aid troubleshooting?

    <p>Attempt to reproduce the error and download server logs</p> Signup and view all the answers

    Which option is a consequence of restarting the server in Matillion ETL?

    <p>Disconnected client sessions and stopped jobs</p> Signup and view all the answers

    What does the 'Download Server Log' option in Matillion ETL provide users access to?

    <p>Server log files containing servlet logs</p> Signup and view all the answers

    In Matillion ETL for BigQuery, where can admins adjust permission settings for groups created in the Manage Groups window?

    <p>User Configurations</p> Signup and view all the answers

    Which feature in Matillion ETL is only available in Enterprise Mode and requires users and security setup via User Configurations?

    <p>Manage Groups</p> Signup and view all the answers

    What action can admins perform using the Migrate feature in Matillion ETL?

    <p>Transfer resources between instances</p> Signup and view all the answers

    Where can users see a detailed list of significant activity within a Matillion ETL Instance?

    <p>Audit Log</p> Signup and view all the answers

    What is the default setting for the Product Improvement Metrics option in Matillion ETL?

    <p>'Yes' by default</p> Signup and view all the answers

    Which instance types in Matillion ETL support the Audit Log feature?

    <p>m4 and m5 instances</p> Signup and view all the answers

    What additional steps are required when using the Migrate feature in Matillion ETL to transfer resources between instances?

    <p>'100% duplication' process</p> Signup and view all the answers

    Where can admins manage the creation, editing, and removal of groups with identifying names specified by them in Matillion ETL?

    <p>'Manage Groups'</p> Signup and view all the answers

    What is a requirement for the 'Manage Permissions' feature to be available in Matillion ETL?

    <p>Enterprise Mode activation</p> Signup and view all the answers

    What is the recommended action before upgrading an instance in Matillion ETL?

    <p>Perform a manual backup of the instance</p> Signup and view all the answers

    How can new users access projects in Matillion ETL according to the text?

    <p>By logging in at least once</p> Signup and view all the answers

    What is the purpose of controlling user access in Matillion ETL?

    <p>To manage internal and external users</p> Signup and view all the answers

    What security measure does using External security in Matillion ETL provide?

    <p>Allows LDAP integration for user access</p> Signup and view all the answers

    How can SSL be enabled in Matillion ETL?

    <p>By uploading SSL certificates</p> Signup and view all the answers

    What is the purpose of the Restart Server function in Matillion ETL?

    <p>To restart the Matillion ETL instance without EC2 console</p> Signup and view all the answers

    Why might administrators need to manage database drivers in Matillion ETL?

    <p>To use specific drivers not included by default</p> Signup and view all the answers

    What is the role of the Manage Backups function in Matillion ETL?

    <p>To create automatic backups of the instance</p> Signup and view all the answers

    Study Notes

    Matillion ETL Job Execution

    • The maximum number of processes that can run inside a single Matillion ETL job is determined by the number of vCPUs available on the instance type.
    • A queue of type First-In-First-Out (FIFO) is used when a Matillion ETL job is submitted.
    • By default, all Matillion ETL instances can run 4 jobs concurrently.

    Job Scheduling and Concurrency

    • If multiple runs of the same job are queued behind each other, they will run sequentially.
    • Long-running jobs submitted to Matillion ETL can potentially affect scheduled jobs.
    • The maximum number of concurrent processes that a single job execution can run in Matillion ETL is determined by the number of vCPUs available on the instance type.

    Instance Types and vCPUs

    • Using instance types with many more vCPUs can lead to potential issues with concurrent job execution.
    • As the number of vCPUs on an instance increases, the maximum number of concurrent processes that a single job execution can run also increases.

    Job Distribution and HA Clusters

    • In an HA Cluster for Matillion ETL, jobs are distributed across nodes.
    • It is important to make jobs idempotent in an HA Cluster to avoid data inconsistencies.

    Job Configuration and Management

    • Validation tasks are handled in Matillion ETL using a specific validation component.
    • When the maximum concurrency limit is reached in Matillion ETL, further job submissions are queued.
    • The Run Orchestration component is used to run multiple ETL jobs across multiple connections.
    • A job running in Matillion ETL has 4 threads by default.

    Administrative Tools and Features

    • The User Configuration option is unavailable in HA (clustered) instances of Matillion ETL.
    • The Admin menu option provides access to manage database drivers.
    • The 'Download Server Log' option provides users access to the server logs for troubleshooting purposes.
    • The Migrate feature allows admins to transfer resources between instances.

    Security and Permissions

    • In Matillion ETL, admins can adjust permission settings for groups created in the Manage Groups window.
    • The 'Manage Permissions' feature is only available in Enterprise Mode and requires users and security setup via User Configurations.
    • Using External security in Matillion ETL provides an additional layer of security and control.

    Upgrades and Maintenance

    • Before upgrading an instance in Matillion ETL, it is recommended to take backups and verify instance configuration.
    • The Restart Server function is used to restart the Matillion ETL server.
    • The Manage Backups function is used to manage and restore backups in Matillion ETL.

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    Description

    Learn about Matillion ETL's process of running jobs and job concurrency. Understand how jobs are queued and executed using Message Queues, the API, or the Scheduler. Get insights into the role of Quartz job scheduler in managing job queues.

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