AWS Snowball User Guide
statistic One of five functions of the values submitted for a given sampling
period (p. 149). These functions are Maximum, Minimum, Sum, Average, and
SampleCount.
stem The common root or substring shared by a set of related words.
stemming The process of mapping related words to a common stem. This enables matching
on variants of a word. For example, a search for "horse" could return matches for
horses, horseback, and horsing, as well as horse. Amazon CloudSearch (p. 110)
supports both dictionary based and algorithmic stemming.
step Amazon EMR (p. 111): A single function applied to the data in a job
flow (p. 137). The sum of all steps comprises a job flow.
step type Amazon EMR (p. 111): The type of work done in a step. There are a limited
number of step types, such as moving data from Amazon S3 (p. 113) to Amazon
EC2 (p. 111) or from Amazon EC2 to Amazon S3.
sticky session A feature of the Elastic Load Balancing (p. 130) load balancer that binds a user's
session to a specific application instance so that all requests coming from the user
during the session are sent to the same application instance. By contrast, a load
balancer defaults to route each request independently to the application instance
with the smallest load.
stopping The process of filtering stop words from an index or search request.
stopword A word that is not indexed and is automatically filtered out of search requests
because it is either insignificant or so common that including it would result in
too many matches to be useful. Stop words are language-specific.
streaming Amazon EMR (Amazon EMR) (p. 111): A utility that comes with
Hadoop (p. 134) that enables you to develop MapReduce executables in
languages other than Java.
Amazon CloudFront (p. 110): The ability to use a media file in real time—as it is
transmitted in a steady stream from a server.
streaming distribution A special kind of distribution (p. 128) that serves streamed media files using a
Real Time Messaging Protocol (RTMP) connection.
Streams See Amazon Kinesis Data Streams.
string-to-sign Before you calculate an HMAC (p. 134) signature, you first assemble the required
components in a canonical order. The preencrypted string is the string-to-sign.
string match condition AWS WAF (p. 121): An attribute that specifies the strings that AWS WAF
searches for in a web request, such as a value in a header or a query string. Based
on the specified strings, you can configure AWS WAF to allow or block web
requests to AWS resource (p. 148)s such as CloudFront (p. 110) distributions.
strongly consistent read A read process that returns a response with the most up-to-date data, reflecting
the updates from all prior write operations that were successful—regardless of
the region.
See Also data consistency, eventual consistency, eventually consistent read.
structured query Search criteria specified using the Amazon CloudSearch (p. 110) structured
query language. You use the structured query language to construct compound
queries that use advanced search options and combine multiple search criteria
using Boolean operators.
STS See AWS Security Token Service (AWS STS).
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