Topic
Spark (mathematics)
About: Spark (mathematics) is a research topic. Over the lifetime, 7304 publications have been published within this topic receiving 63322 citations.
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31 Mar 2015TL;DR: In this paper, a distributed object store can expose object metadata, in addition to object data, to distributed processing systems, such as Hadoop and Apache Spark, by exposing object metadata as a collection of records that can be efficiently processed by MapReduce (MR) and other distributed processing frameworks.
Abstract: A distributed object store can expose object metadata, in addition to object data, to distributed processing systems, such as Hadoop and Apache Spark. The distributed object store may acts as a Hadoop Compatible File System (HCFS), exposing object metadata as a collection of records that can be efficiently processed by MapReduce (MR) and other distributed processing frameworks. A distributed processing job can specify a metadata query to narrow the set of objects returned. Related methods are also described.
18 citations
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21 Sep 1988
TL;DR: In this article, a spark timing control for spark ignited internal combustion engines that improves running under certain adverse conditions is presented. But, it does not address the problem of uneven running and stalling.
Abstract: Several embodiments of spark timing control for spark ignited internal combustion engines that improve running under certain adverse conditions. Arrangements are disclosed for reducing the speed of the engine in response to certain abnormal conditions, such as shifting of an associated transmission. The speed is reduced by interrupting the spark of the engine. In accordance with the disclosed embodiments, uneven running and stalling is avoided by advancing the spark if the engine speed falls below a predetermined engine speed.
18 citations
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18 citations
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TL;DR: By abstracting away the complexity of distributed systems, large-scale data processing platforms—MapReduce, Hadoop, Spark, Dryad, etc.—have provided developers with simple means for harnessing the power of data analytics.
Abstract: By abstracting away the complexity of distributed systems, large-scale data processing platforms—MapReduce, Hadoop, Spark, Dryad, etc.—have provided developers with simple means for harnessing the ...
18 citations
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13 Jul 1977
TL;DR: In this article, a flame detection system responsive to an arc triggering voltage in a spark gap having at least a portion located in a flame is used to control spark generating equipment, and a pulse generator used to trigger the arc is inhibited upon detection of a lowered spark triggering voltage resulting from ignition of a flame.
Abstract: A flame detection system responsive to an arc triggering voltage in a spark gap having at least a portion located in a flame is used to control spark generating equipment. A pulse generator used to trigger the arc is inhibited upon detection of a lowered spark triggering voltage resulting from ignition of a flame.
18 citations