Leonidas Fegaras created MRQL-90:
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Summary: Add support for Storm streaming
Key: MRQL-90
URL: https://issues.apache.org/jira/browse/MRQL-90
Project: MRQL
Issue Type: New Feature
Components: Streaming
Affects Versions: 0.9.8
Reporter: Leonidas Fegaras
Assignee: Leonidas Fegaras
This task is assigned to Achyut Paudel [email protected] as part of
his MS thesis at UTA. This extension will allow MRQL queries to run on Apache
Storm DSPE (distributed stream processing engine). The stream unit is a Tuple
with just one component: a Bag<MRData>, which is a buffer of MRData used for
batch streaming. Each MRQL physical operator will correspond to 1-3 Storm
bolts, while a source operator will correspond to a spout. For example, the
MapReduce(m,r,X) operation will consist of 2 bolts: a bolt with a map function
m (a Bolt subclass with an attribute m) that applies m to the input data, and
another similar bolt with the reduce function r. These two bolts will be
connected in the Storm topology with a Storm group-by operation. The query
evaluator will first generate a Storm topology from a physical plan and then
will use the Storm evaluator to evaluate the topology. The only new components
needed for these extensions are: 1) Bolt and Spout subclasses to capture MRQL
operators 2) a Storm topology generator from MRQL plans.
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