true When set to true this property uses multiple

True when set to true this property uses multiple

This preview shows page 77 - 79 out of 395 pages.

fs.s3.consistent.fastList true When set to true , this property uses multiple threads to list a directory (when necessary). Consistency must be enabled in order to use this property. fs.s3.consistent.fastList.prefetchMetadata false When set to true , this property enables metadata prefetching for directories containing more than 20,000 items. fs.s3.consistent.notification.CloudWatch false When set to true , CloudWatch metrics are enabled for FileSystem API calls that fail due to Amazon S3 eventual consistency issues. fs.s3.consistent.notification.SQS false When set to true , eventual consistency notifications are pushed to an Amazon SQS queue. fs.s3.consistent.notification.SQS.queueName EMRFS- Inconsistency- <jobFlowId> Changing this property allows you to specify your own SQS queue name for messages regarding Amazon S3 eventual consistency issues. fs.s3.consistent.notification.SQS.customMsg none This property allows you to specify custom information included in SQS messages regarding Amazon S3 eventual consistency issues. If a value is not specified for this property, the corresponding field in the message is empty. 71
Image of page 77
Amazon EMR Management Guide Consistent View Property Default value Description fs.s3.consistent.dynamodb.endpoint none This property allows you to specify a custom DynamoDB endpoint for your consistent view metadata. EMRFS CLI Reference The EMRFS CLI is installed by default on all cluster master nodes created using Amazon EMR release version 3.2.1 or later. You can use the EMRFS CLI to manage the metadata for consistent view. Note The emrfs command is only supported with VT100 terminal emulation. However, it may work with other terminal emulator modes. emrfs top-level command The emrfs top-level command supports the following structure. emrfs [describe-metadata | set-metadata-capacity | delete-metadata | create-metadata | \ list-metadata-stores | diff | delete | sync | import ] [options] [arguments] Specify [options], with or without [arguments] as described in the following table. For [options] specific to sub-commands ( describe-metadata , set-metadata-capacity , etc.), see each sub-command below. [options] for emrfs Option Description Required -a AWS_ACCESS_KEY_ID | --access-key AWS_ACCESS_KEY_ID The AWS access key you use to write objects to Amazon S3 and to create or access a metadata store in DynamoDB. By default, AWS_ACCESS_KEY_ID is set to the access key used to create the cluster. No -s AWS_SECRET_ACCESS_KEY | --secret-key AWS_SECRET_ACCESS_KEY The AWS secret key associated with the access key you use to write objects to Amazon S3 and to create or access a metadata store in DynamoDB. By default, AWS_SECRET_ACCESS_KEY is set to the secret key associated with the access key used to create the cluster. No -v | --verbose Makes output verbose. No -h | --help Displays the help message for the emrfs command with a usage statement.
Image of page 78
Image of page 79

You've reached the end of your free preview.

Want to read all 395 pages?

  • Spring '12
  • LauraParker
  • Amazon Web Services, Amazon Elastic Compute Cloud

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes