AWS Snowball User Guide
are questions that have binary answers. The result for a binary classification
model is always either a “1” (for a “true” or affirmative answers) or a “0” (for a
“false” or negative answers).
blacklist A list of IP addresses, email addresses, or domains that an internet service
provider (p. 136) suspects to be the source of spam (p. 153). The ISP blocks
incoming email from these addresses or domains.
block A data set. Amazon EMR (p. 111) breaks large amounts of data into subsets.
Each subset is called a data block. Amazon EMR assigns an ID to each block and
uses a hash table to keep track of block processing.
block device A storage device that supports reading and (optionally) writing data in fixed-size
blocks, sectors, or clusters.
block device mapping A mapping structure for every AMI (p. 112) and instance (p. 136) that specifies
the block devices attached to the instance.
blue/green deployment AWS CodeDeploy: A deployment method in which the instances in a deployment
group (the original environment) are replaced by a different set of instances (the
replacement environment).
bootstrap action A user-specified default or custom action that runs a script or an application on
all nodes of a job flow before Hadoop (p. 134) starts.
Border Gateway Protocol
Autonomous System Number
See BGP ASN.
bounce A failed email delivery attempt.
breach Auto Scaling (p. 115): The condition in which a user-set threshold (upper or
lower boundary) is passed. If the duration of the breach is significant, as set by a
breach duration parameter, it can possibly start a scaling activity (p. 150).
bucket Amazon Simple Storage Service (Amazon S3) (p. 113): A container for stored
objects. Every object is contained in a bucket. For example, if the object named
photos/puppy.jpg is stored in the johnsmith bucket, then authorized users
can access the object with the URL http://johnsmith.s3.amazonaws.com/
photos/puppy.jpg.
bucket owner The person or organization that owns a bucket (p. 122) in Amazon S3 (p. 113).
Just as Amazon is the only owner of the domain name Amazon.com, only one
person or organization can own a bucket.
bundling A commonly used term for creating an Amazon Machine Image (AMI) (p. 112). It
specifically refers to creating instance store-backed AMI (p. 136)s.
C
Numbers and Symbols (p. 108) | A (p. 108) | B (p. 121) | C (p. 122) | D (p. 126) | E (p. 129) | F (p. 132) |
G (p. 133) | H (p. 134) | I (p. 135) | J (p. 137) | K (p. 137) | L (p. 138) | M (p. 139) | N (p. 141) | O (p. 142)
| P (p. 143) | Q (p. 146) | R (p. 146) | S (p. 149) | T (p. 155) | U (p. 157) | V (p. 158) | W (p. 159) | X, Y,
Z (p. 159)
cache cluster A logical cache distributed over multiple cache node (p. 123)s. A cache cluster
can be set up with a specific number of cache nodes.
cache cluster identifier Customer-supplied identifier for the cache cluster that must be unique for that
customer in an AWS Region (p. 147).
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