Josef Adersberger

Use Solr export handler

7

- Support the Solr /export interface to transfer result sets from Solar to Spark (see https://cwiki.apache.org/confluence/display/solr/Exporting+Result+Sets). - Introduce DocValues for all relevant fields to be able to export them -...

Refactor multi-dimensional time series concept

2

- POJO representation - ChronixRDD - DataFrame

Integrate copied code from other sub-projects into these and get it out of Chronix Spark codebase

Implement SAX analysis

1

- Sub-chunking of a time series in fragments of a chronix chunk size - Linear regression on chunks - Mapping of regression values to symbolic representations

Implement new actions and transformations on ChronixRDD

1

- join (chunks) - diff / delta - filter - lag - align - vectorization - statistics based on DoubleRDD incl. approx. - be inspired by - Spark-TS: TimeSeriesRDD -...

- Allow serialization in memory or on disk - Use Kryo as tried before or use another format like ByteArray or Apache Arrow. `conf.set("spark.serializer", "org.apache.spark.serializer.KryoSerializer"); conf.registerKryoClasses(new Class[]{ MetricTimeSeries.class, MetricObservation.class, MetricDimensions.class,...

One column per metric

Provide bidi transformations from/to ChronixRDD and Spark-TS' TimeseriesRDD