REPRESENTING RESULT DATA STREAMS BASED ON EXECUTION OF DATA STREAM LANGUAGE PROGRAMS

摘要

An instrumentation analysis system processes data streams by executing instructions specified using a data stream language program. The data stream language allows users to specify a search condition using a find block for identifying the set of data streams processed by the data stream language program. The set of identified data streams may change dynamically. The data stream language allows users to group data streams into sets of data streams based on distinct values of one or more metadata attributes associated with the input data streams. The data stream language allows users to specify a threshold block for determining whether data values of input data streams are outside boundaries specified using low/high thresholds. The elements of the set of data streams input to the threshold block can dynamically change. The low/high threshold values can be specified as data streams and can dynamically change.

主权项

1. A method for generating and storing data streams generated by a data stream language program, the method comprising:
receiving data from a plurality of data streams; storing metadata describing the plurality of data streams, the metadata for each data stream including one or more attributes associated with the data stream; receiving a set of instructions specified using a data stream language program for processing the plurality of data streams; generating one or more result data streams by executing the set of instructions; for each of the one or more result data stream:
determining a set of values of attributes describing the result data stream, the determining based on the set of instructions;storing the set of values as metadata describing the result data stream;generating an identifier for the result data stream and associating the identifier with the metadata describing the result data stream; andstoring data of the result data stream in association with the identifier.