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0.5.0
This release includes many new features on Pinot ingestion and connectors, query capability and a revamped controller UI.
This release includes many new features on Pinot ingestion and connectors (e.g., support for filtering during ingestion which is configurable in table config; support for json during ingestion; proto buf input format support and a new Pinot JDBC client), query capability (e.g., a new GROOVY transform function UDF) and admin functions (a revamped Cluster Manager UI & Query Console UI). It also contains many key bug fixes. See details below.
- Allowing update on an existing instance config: PUT /instances/{instanceName} with Instance object as the pay-load (#PR4952)
- Add GenericTransformFunction wrapper for simple ScalarFunctions (PR#5440) — Adding support to invoke any scalar function via GenericTransformFunction
- Add multi-value support to SegmentDumpTool (PR#5487) — add segment dump tool as part of the pinot-tool.sh script
- Add json_format function to convert json object to string during ingestion. (PR#5492) — Can be used to store complex objects as a json string (which can later be queries using jsonExtractScalar)
- Support escaping single quote for SQL literal (PR#5501) — This is especially useful for DistinctCountThetaSketch because it stores expression as literal E.g. DistinctCountThetaSketch(..., 'foo=''bar''', ...)
- Add a new field IngestionConfig in TableConfig — FilterConfig: ingestion level filtering of records, based on filter function. (PR#5597) — TransformConfig: ingestion level column transformations. This was previously introduced in Schema (FieldSpec#transformFunction), and has now been moved to TableConfig. It continues to remain under schema, but we recommend users to set it in the TableConfig starting this release (PR#5681).
- Allow star-tree creation during segment load (#PR5641) — Introduced a new boolean config enableDynamicStarTreeCreation in IndexingConfig to enable/disable star-tree creation during segment load.
- Support customized accuracy for distinctCountHLL, distinctCountHLLMV functions by adding log2m value as the second parameter in the function. (#PR5564) —Adding cluster config: default.hyperloglog.log2m to allow user set default log2m value.
- Add a constraint to the message queue for all instances in Helix, with a large default value of 100000. (PR#5631)
- Support order-by aggregations not present in SELECT (PR#5637) — Example: "select subject from transcript group by subject order by count() desc" This is equivalent to the following query but the return response should not contain count(). "select subject, count() from transcript group by subject order by count() desc"
- Improvements to RealtimeProvisioningHelper command (#PR5737) — Improved docs related to ingestion and plugins
- Added GROOVY transform function UDF (#PR5748) — Ability to run a groovy script in the query as a UDF. e.g. string concatenation: SELECT GROOVY('{"returnType": "INT", "isSingleValue": true}', 'arg0 + " " + arg1', columnA, columnB) FROM myTable
- TransformConfig: ingestion level column transformations. This was previously introduced in Schema (FieldSpec#transformFunction), and has now been moved to TableConfig. It continues to remain under schema, but we recommend users to set it in the TableConfig starting this release (PR#5681).
- Config key enable.case.insensitive.pql in Helix cluster config is deprecated, and replaced with enable.case.insensitive. (#PR5546)
- Change default segment load mode to MMAP. (PR#5539) —The load mode for segments currently defaults to
heap.
- PQL queries with HAVING clause will no longer be accepted for the following reasons: (#PR5570) — HAVING clause does not apply to PQL GROUP-BY semantic where each aggregation column is ordered individually — The current behavior can produce inaccurate results without any notice — HAVING support will be added for SQL queries in the next release
- Because of the standardization of the DistinctCountThetaSketch predicate strings, please upgrade Broker before Server. The new Broker can handle both standard and non-standard predicate strings for backward-compatibility. (#PR5613)
Last modified 1yr ago