Add a segmentMorphFactory to MSQ Datasource Destination #16692
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… before falling back to a temporary file
…ten. - Add a readBufferCache to FrontCodedIntArrayIndexedWriter. - Track cardinality with FixedIndexedWriter.
- Remove wire transfer mapping as it is unreachable. - Increase memory used by FileWriteOutBytes and change it to direct memory to improve performance.
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Area - Batch Ingestion
Area - Querying
Area - Segment Format and Ser/De
Area - Ingestion
Area - MSQ
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processing/src/main/java/org/apache/druid/segment/data/ColumnarLongs.java
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Will break this up into smaller PRs for reviewability |
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Description
Introduces the concept of segmentMorphFactory to
DataSourceMSQDestinationand refactors some of the existing code around frames and semantic utils.A segmentMorphFactory is a way to introduce an alternate final stage during ingestion with MSQ. This opens up the possibility of modifying segments instead of generating new segments as a result of the query.
This PR should not have a functional impact, and is meant to be used for other features in the future.
Major changes include:
SemanticCreatorand addSemanticUtils.FrameProcessorFactoryto MSQ.This PR has: