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Batch import example
Step-by-step guide on pushing your own data into the Pinot cluster
So far, we have set up our cluster, ran some queries, and explored the admin endpoints. Now, it's time to get our own data into Pinot. The rest of the instructions assume you're using Pinot in Docker.
Preparing your data
Let's gather our data files and put them in
pinot-quick-start/rawdata. 1
mkdir -p /tmp/pinot-quick-start/rawdata
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Supported file formats are CVS, JSON, AVRO, PARQUET, THRIFT, ORC. If you don't have sample data, you can use this sample CSV.
/tmp/pinot-quick-start/rawdata/transcript.csv
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studentID,firstName,lastName,gender,subject,score,timestampInEpoch
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200,Lucy,Smith,Female,Maths,3.8,1570863600000
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200,Lucy,Smith,Female,English,3.5,1571036400000
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201,Bob,King,Male,Maths,3.2,1571900400000
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202,Nick,Young,Male,Physics,3.6,1572418800000
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Creating a schema
Schema is used to define the columns and data types of the Pinot table. A detailed overview of the schema can be found in Schema.
Briefly, we categorize our columns into 3 types
Column Type
Description
Dimensions
Typically used in filters and group by, for slicing and dicing into data
Metrics
Typically used in aggregations, represents the quantitative data
Time
Optional column, represents the timestamp associated with each row
For example, in our sample table, the
playerID, yearID, teamID, league, playerName columns are the dimensions, the playerStint, numberOfgames, numberOfGamesAsBatter, AtBatting, runs, hits, doules, triples, homeRuns, runsBattedIn, stolenBases, caughtStealing, baseOnBalls, strikeouts, intentionalWalks, hitsByPitch, sacrificeHits, sacrificeFlies, groundedIntoDoublePlays, G_old columns are the metrics and there is no time column.Once you have identified the dimensions, metrics and time columns, create a schema for your data, using the reference below.
/tmp/pinot-quick-start/transcript-schema.json
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{
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"schemaName": "transcript",
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"dimensionFieldSpecs": [
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{
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"name": "studentID",
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"dataType": "INT"
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},
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{
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"name": "firstName",
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"dataType": "STRING"
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},
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{
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"name": "lastName",
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"dataType": "STRING"
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},
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{
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"name": "gender",
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"dataType": "STRING"
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},
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{
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"name": "subject",
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"dataType": "STRING"
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}
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],
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"metricFieldSpecs": [
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{
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"name": "score",
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"dataType": "FLOAT"
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}
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],
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"dateTimeFieldSpecs": [{
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"name": "timestampInEpoch",
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"dataType": "LONG",
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"format" : "1:MILLISECONDS:EPOCH",
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"granularity": "1:MILLISECONDS"
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}]
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}
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Creating a table config
A table config is used to define the config related to the Pinot table. A detailed overview of the table can be found in Table.
Here's the table config for the sample CSV file. You can use this as a reference to build your own table config. Simply edit the tableName and schemaName.
/tmp/pinot-quick-start/transcript-table-offline.json
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{
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"tableName": "transcript",
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"segmentsConfig" : {
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"timeColumnName": "timestampInEpoch",
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"timeType": "MILLISECONDS",
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"replication" : "1",
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"schemaName" : "transcript"
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},
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"tableIndexConfig" : {
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"invertedIndexColumns" : [],
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"loadMode" : "MMAP"
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},
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"tenants" : {
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"broker":"DefaultTenant",
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"server":"DefaultTenant"
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},
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"tableType":"OFFLINE",
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"metadata": {}
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}
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Uploading your table config and schema
Check the directory structure so far
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$ ls /tmp/pinot-quick-start
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rawdata transcript-schema.json transcript-table-offline.json
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​
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$ ls /tmp/pinot-quick-start/rawdata
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transcript.csv
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Upload the table config using the following command
Docker
Launcher Script
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docker run --rm -ti \
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--network=pinot-demo_default \
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-v /tmp/pinot-quick-start:/tmp/pinot-quick-start \
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--name pinot-batch-table-creation \
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apachepinot/pinot:latest AddTable \
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-schemaFile /tmp/pinot-quick-start/transcript-schema.json \
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-tableConfigFile /tmp/pinot-quick-start/transcript-table-offline.json \
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-controllerHost manual-pinot-controller \
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-controllerPort 9000 -exec
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bin/pinot-admin.sh AddTable \
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-tableConfigFile /tmp/pinot-quick-start/transcript-table-offline.json \
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-schemaFile /tmp/pinot-quick-start/transcript-schema.json -exec
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Creating a segment
A Pinot table's data is stored as Pinot segments. A detailed overview of the segment can be found in Segment.
To generate a segment, we need to first create a job spec yaml file. JobSpec yaml file has all the information regarding data format, input data location and pinot cluster coordinates. You can just copy over this job spec file. If you're using your own data, be sure to 1) replace
transcript with your table name 2) set the right recordReaderSpecDocker
Launcher Script
/tmp/pinot-quick-start/docker-job-spec.yml
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executionFrameworkSpec:
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name: 'standalone'
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segmentGenerationJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner'
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segmentTarPushJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner'
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segmentUriPushJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentUriPushJobRunner'
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jobType: SegmentCreationAndTarPush
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inputDirURI: '/tmp/pinot-quick-start/rawdata/'
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includeFileNamePattern: 'glob:**/*.csv'
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outputDirURI: '/tmp/pinot-quick-start/segments/'
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overwriteOutput: true
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pinotFSSpecs:
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- scheme: file
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className: org.apache.pinot.spi.filesystem.LocalPinotFS
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recordReaderSpec:
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dataFormat: 'csv'
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className: 'org.apache.pinot.plugin.inputformat.csv.CSVRecordReader'
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configClassName: 'org.apache.pinot.plugin.inputformat.csv.CSVRecordReaderConfig'
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tableSpec:
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tableName: 'transcript'
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schemaURI: 'http://manual-pinot-controller:9000/tables/transcript/schema'
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tableConfigURI: 'http://manual-pinot-controller:9000/tables/transcript'
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pinotClusterSpecs:
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- controllerURI: 'http://manual-pinot-controller:9000'
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/tmp/pinot-quick-start/batch-job-spec.yml
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executionFrameworkSpec:
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name: 'standalone'
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segmentGenerationJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner'
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segmentTarPushJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner'
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segmentUriPushJobRunnerClassName: 'org.apache.pinot.plugin.ingestion.batch.standalone.SegmentUriPushJobRunner'
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jobType: SegmentCreationAndTarPush
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inputDirURI: '/tmp/pinot-quick-start/rawdata/'
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includeFileNamePattern: 'glob:**/*.csv'
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outputDirURI: '/tmp/pinot-quick-start/segments/'
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overwriteOutput: true
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pinotFSSpecs:
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- scheme: file
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className: org.apache.pinot.spi.filesystem.LocalPinotFS
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recordReaderSpec:
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dataFormat: 'csv'
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className: 'org.apache.pinot.plugin.inputformat.csv.CSVRecordReader'
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configClassName: 'org.apache.pinot.plugin.inputformat.csv.CSVRecordReaderConfig'
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tableSpec:
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tableName: 'transcript'
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schemaURI: 'http://localhost:9000/tables/transcript/schema'
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tableConfigURI: 'http://localhost:9000/tables/transcript'
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pinotClusterSpecs:
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- controllerURI: 'http://localhost:9000'
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Use the following command to generate a segment and upload it
Docker
Using launcher scripts
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docker run --rm -ti \
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--network=pinot-demo_default \
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-v /tmp/pinot-quick-start:/tmp/pinot-quick-start \
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--name pinot-data-ingestion-job \
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apachepinot/pinot:latest LaunchDataIngestionJob \
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-jobSpecFile /tmp/pinot-quick-start/docker-job-spec.yml
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bin/pinot-admin.sh LaunchDataIngestionJob \
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-jobSpecFile /tmp/pinot-quick-start/batch-job-spec.yml
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Sample output
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SegmentGenerationJobSpec:
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!!org.apache.pinot.spi.ingestion.batch.spec.SegmentGenerationJobSpec
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excludeFileNamePattern: null
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executionFrameworkSpec: {extraConfigs: null, name: standalone, segmentGenerationJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner,
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segmentTarPushJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner,
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segmentUriPushJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentUriPushJobRunner}
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includeFileNamePattern: glob:**\/*.csv
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inputDirURI: /tmp/pinot-quick-start/rawdata/
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jobType: SegmentCreationAndTarPush
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outputDirURI: /tmp/pinot-quick-start/segments
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overwriteOutput: true
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pinotClusterSpecs:
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- {controllerURI: 'http://localhost:9000'}
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pinotFSSpecs:
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- {className: org.apache.pinot.spi.filesystem.LocalPinotFS, configs: null, scheme: file}
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pushJobSpec: null
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recordReaderSpec: {className: org.apache.pinot.plugin.inputformat.csv.CSVRecordReader,
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configClassName: org.apache.pinot.plugin.inputformat.csv.CSVRecordReaderConfig,
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configs: null, dataFormat: csv}
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segmentNameGeneratorSpec: null
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tableSpec: {schemaURI: 'http://localhost:9000/tables/transcript/schema', tableConfigURI: 'http://localhost:9000/tables/transcript',
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tableName: transcript}
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​
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Trying to create instance for class org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner
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Initializing PinotFS for scheme file, classname org.apache.pinot.spi.filesystem.LocalPinotFS
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Finished building StatsCollector!
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Collected stats for 4 documents
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Using fixed bytes value dictionary for column: studentID, size: 9
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Created dictionary for STRING column: studentID with cardinality: 3, max length in bytes: 3, range: 200 to 202
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Using fixed bytes value dictionary for column: firstName, size: 12
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Created dictionary for STRING column: firstName with cardinality: 3, max length in bytes: 4, range: Bob to Nick
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Using fixed bytes value dictionary for column: lastName, size: 15
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Created dictionary for STRING column: lastName with cardinality: 3, max length in bytes: 5, range: King to Young
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Created dictionary for FLOAT column: score with cardinality: 4, range: 3.2 to 3.8
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Using fixed bytes value dictionary for column: gender, size: 12
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Created dictionary for STRING column: gender with cardinality: 2, max length in bytes: 6, range: Female to Male
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Using fixed bytes value dictionary for column: subject, size: 21
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Created dictionary for STRING column: subject with cardinality: 3, max length in bytes: 7, range: English to Physics
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Created dictionary for LONG column: timestampInEpoch with cardinality: 4, range: 1570863600000 to 1572418800000
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Start building IndexCreator!
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Finished records indexing in IndexCreator!
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Finished segment seal!
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Converting segment: /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0 to v3 format
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v3 segment location for segment: transcript_OFFLINE_1570863600000_1572418800000_0 is /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3
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Deleting files in v1 segment directory: /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0
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Starting building 1 star-trees with configs: [StarTreeV2BuilderConfig[splitOrder=[studentID, firstName],skipStarNodeCreation=[],functionColumnPairs=[[email protected]3a48efdc],maxLeafRecords=1]] using OFF_HEAP builder
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Starting building star-tree with config: StarTreeV2BuilderConfig[splitOrder=[studentID, firstName],skipStarNodeCreation=[],functionColumnPairs=[[email protected]3a48efdc],maxLeafRecords=1]
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Generated 3 star-tree records from 4 segment records
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Finished constructing star-tree, got 9 tree nodes and 4 records under star-node
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Finished creating aggregated documents, got 6 aggregated records
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Finished building star-tree in 10ms
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Finished building 1 star-trees in 27ms
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Computed crc = 3454627653, based on files [/var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3/columns.psf, /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3/index_map, /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3/metadata.properties, /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3/star_tree_index, /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0/v3/star_tree_index_map]
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Driver, record read time : 0
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Driver, stats collector time : 0
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Driver, indexing time : 0
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Tarring segment from: /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0 to: /var/folders/3z/qn6k60qs6ps1bb6s2c26gx040000gn/T/pinot-1583443148720/output/transcript_OFFLINE_1570863600000_1572418800000_0.tar.gz
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Size for segment: transcript_OFFLINE_1570863600000_1572418800000_0, uncompressed: 6.73KB, compressed: 1.89KB
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Trying to create instance for class org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner
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Initializing PinotFS for scheme file, classname org.apache.pinot.spi.filesystem.LocalPinotFS
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Start pushing segments: [/tmp/pinot-quick-start/segments/transcript_OFFLINE_1570863600000_1572418800000_0.tar.gz]... to locations: [[email protected]f91] for table transcript
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Pushing segment: transcript_OFFLINE_1570863600000_1572418800000_0 to location: http://localhost:9000 for table transcript
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Sending request: http://localhost:9000/v2/segments?tableName=transcript to controller: nehas-mbp.hsd1.ca.comcast.net, version: Unknown
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Response for pushing table transcript segment transcript_OFFLINE_1570863600000_1572418800000_0 to location http://localhost:9000 - 200: {"status":"Successfully uploaded segment: transcript_OFFLINE_1570863600000_1572418800000_0 of table: transcript"}
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Querying your data
You're all set! You should see your table in the Query Console and be able to run queries against it now.
Last modified 5mo ago