The tables below shows the properties available to set at the table level.
| Property | Description |
|---|---|
The following properties can be nested inside the top-level configurations.
Find details on configuring routing here.
Specify the columns and the type of indices to be created on those columns. Currently, not all index types can use this property. The following indexes are supported:
The property indexType (in singular, accepting a single index id as string) is also supported for compatibility reasons, but we recommend using the plural in order to be able to define several indexes for the same column.
Warning:
If removing the forwardIndexDisabled property above to regenerate the forward index for multi-value (MV) columns note that the following invariants cannot be maintained after regenerating the forward index for a forward index disabled column:
Ordering guarantees of the MV values within a row
If entries within an MV row are duplicated, the duplicates will be lost. Regenerate the segments via your offline jobs and re-push / refresh the data to get back the original MV data with duplicates.
We will work on removing the second invariant in the future.
The sections below apply to real-time tables only.
The streamConfigs section has been deprecated as of release 0.7.0. See streamConfigMaps instead.
Pinot allows users to define environment variables in the format of ${ENV_NAME} or ${ENV_NAME:DEFAULT_VALUE}as field values in table config.
Pinot instance will override it during runtime.
Brackets are required when defining the environment variable."$ENV_NAME"is not supported.
Environment variables used without default value in table config have to be available to all Pinot components - Controller, Broker, Server, and Minion. Otherwise, querying/consumption will be affected depending on the service to which these variables are not available.
Below is an example of setting AWS credential as part of table config using environment variable.
Example:
Here's an example table config for a real-time table. All the fields from the offline table config are valid for the real-time table. Additionally, real-time tables use some extra fields.
| Property | Description |
|---|---|
| Property | Description |
|---|---|
| Property | Description |
|---|---|
| Property | Description |
|---|---|
| Property | Description |
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| Property | |
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| Property | Description |
|---|---|
| Property | Description |
|---|---|
tableName
Specifies the name of the table. Should only contain alpha-numeric characters, hyphens (‘-‘), or underscores (‘_’). (Two notes: While the hyphen is allowed in table names, it is also a reserved character in SQL, so if you use it you must remember to double quote the table name in your queries. Using a double-underscore (‘__’) is not allowed as it is reserved for other features within Pinot.)
tableType
Defines the table type: OFFLINE for offline tables or REALTIME for real-time tables. A hybrid table is essentially two table configurations: one of each type, with the same table name.
isDimTable
Boolean field to indicate whether the table is a dimension table
quota
Defines properties related to quotas, such as storage quota and query quota. For details, see the Quota table below.
task
Defines the enabled minion tasks for the table. See Minion for more details.
routing
Defines the properties that determine how the broker selects the servers to route, and how segments can be pruned by the broker based on segment metadata. For details, see the Routing table below.
query
Defines the properties related to query execution. For details, see the Query table below.
segmentsConfig
Defines the properties related to the segments of the table, such as segment push frequency, type, retention, schema, time column etc. For details, see the segmentsConfig table below.
tableIndexConfig
Defines the indexing related information for the Pinot table. For details, see Table indexing config below.
fieldConfigList
Specifies the columns and the type of indices to be created on those columns. See Field config list for sub-properties.
tenants
Defines the server and broker tenant used for this table. For details, see Tenant below.
ingestionConfig
Defines the configurations needed for ingestion level transformations. For details, see Ingestion Level Transformations and Ingestion Level Aggregations.
upsertConfig
Set upset configurations. For details, see Stream ingestion with upsert.
dedupConfig
Set deduplication configurations. For details, see Stream ingestion with Dedup.
tierConfigs
Defines configurations for tiered storage. For details, see Tiered Storage.
metadata
Contains other metadata of the table. There is a string to string map field "customConfigs" under it which is expressed as key-value pairs to hold the custom configurations.
storage
The maximum storage space the table is allowed to use before replication.
For example, in the above table, the storage is 140G and replication is 3, so the maximum storage the table is allowed to use is 140G x 3 = 420G. The space the table uses is calculated by adding up the sizes of all segments from every server hosting this table. Once this limit is reached, offline segment push throws a 403 exception with message, Quota check failed for segment: segment_0 of table: pinotTable.
maxQueriesPerSecond
The maximum queries per second allowed to execute on this table. If query volume exceeds this, a 429 exception with message Request 123 exceeds query quota for table:pinotTable, query:select count(*) from pinotTable will be sent, and a BrokerMetric QUERY_QUOTA_EXCEEDED will be recorded. The application should build an exponential backoff and retry mechanism to react to this exception.
segmentPrunerTypes
The list of segment pruners to be enabled.
The segment pruner prunes the selected segments based on the query.
Supported values:
partition: Prunes segments based on the partition metadata stored in zookeeper. By default, there is no pruner.
time: Prune segments for queries filtering on timeColumnName that do not contain data in the query's time range.
instanceSelectorType
The server instances to serve the query based on selected segments. Supported values:
balanced: Balances the number of segments served by each selected instance. Default.
replicaGroup: Instance selector for replica group routing strategy.
timeoutMs
Query timeout in milliseconds
disableGroovy
Whether to disable groovy in query. This overrides the broker instance level config (pinot.broker.disable.query.groovy) if configured.
useApproximateFunction
Whether to automatically use approximate function for expensive aggregates, such as DISTINCT_COUNT and PERCENTILE. This overrides the broker instance level config (pinot.broker.use.approximate.function) if configured.
expressionOverrideMap
A map that configures the expressions to override in the query. This can be useful when users cannot control the queries sent to Pinot (e.g. queries auto-generated by some other tools), but want to override the expressions within the query (e.g. override a transform function to a derived column). Example: {"myFunc(a)": "b"}.
schemaName
Name of the schema associated with the table
timeColumnName
The name of the time column for this table. This must match with the time column name in the schema. This is mandatory for tables with push type APPEND, optional for REFRESH. timeColumnName along with timeColumnType is used to manage segment retention and time boundary for offline vs real-time.
replication
Number of replicas for the tables. A replication value of 1 means segments won't be replicated across servers.
retentionTimeUnit
Unit for the retention, such as HOURS or DAYS. This, in combination with retentionTimeValue decides the duration for which to retain the segments.
For example, 365 DAYS means that segments containing data older than 365 days will be deleted periodically by the RetentionManager Controller periodic task. By default, there is no set retention.
retentionTimeValue
A numeric value for the retention. This, in combination with retentionTimeUnit, determines the duration for which to retain the segments
segmentPushType
(Deprecated starting 0.7.0 or commit 9eaea9. Use IngestionConfig -> BatchIngestionConfig -> segmentPushType )
Can be either:
APPEND: New data segments pushed periodically, to append to the existing data eg. daily or hourly
REFRESH: Entire data is replaced every time during a data push. Refresh tables have no retention.
segmentPushFrequency
(Deprecated starting 0.7.0 or commit 9eaea9. Use IngestionConfig -> BatchIngestionConfig -> segmentPushFrequency )
The cadence at which segments are pushed, such as HOURLY or DAILY
invertedIndexColumns
The list of columns that inverted index should be created on. The name of columns should match the schema. e.g. in the table above, inverted index has been created on three columns foo, bar, moo
createInvertedIndexDuringSegmentGeneration
Boolean to indicate whether to create inverted indexes during the segment creation. By default, false i.e. inverted indexes are created when the segments are loaded on the server
sortedColumn
The column which is sorted in the data and hence will have a sorted index. This does not need to be specified for the offline table, as the segment generation job will automatically detect the sorted column in the data and create a sorted index for it.
bloomFilterColumns
The list of columns to apply bloom filter on. The names of the columns should match the schema. For more details about using bloom filters refer to Bloom Filter.
bloomFilterConfigs
The map from the column to the bloom filter config. The names of the columns should match the schema. For more details about using bloom filters refer to Bloom Filter.
rangeIndexColumns
The list of columns that range index should be created on. Typically used for numeric columns and mostly on metrics. e.g. select count(*) from T where latency > 3000 will be faster if you enable range index for latency
rangeIndexVersion
Version of the range index, 2 (latest) by default.
starTreeIndexConfigs
The list of StarTree indexing configs for creating StarTree indexes. For details on how to configure this, see StarTree Index.
enableDefaultStarTree
Boolean to indicate whether to create a default StarTree index for the segment. For details, see StarTree Index.
enableDynamicStarTreeCreation
Boolean to indicate whether to allow creating StarTree when server loads the segment. StarTree creation could potentially consume a lot of system resources, so this config should be enabled when the servers have the free system resources to create the StarTree.
noDictionaryColumns
The set of columns that should not be dictionary-encoded. The name of columns should match the schema. NoDictionary dimension columns are LZ4 compressed, while the metrics are not compressed.
onHeapDictionaryColumns
The list of columns for which the dictionary should be created on heap
varLengthDictionaryColumns
The list of columns for which the variable length dictionary needs to be enabled in offline segments. This is only valid for string and bytes columns and has no impact for columns of other data types.
jsonIndexColumns
The list of columns to create the JSON index. See JSON Index for more details.
jsonIndexConfigs
The map from column to JSON index config. See JSON Index for more details.
segmentPartitionConfig
Use segmentPartitionConfig.columnPartitionMap along with routing.segementPrunerTypes to enable partitioning. For each column, configure the following options:
functionName: Specify one of the supported functions:
Murmur:MurmurHash 2
Modulo: Modulo on integer values
HashCode: Java hashCode()
ByteArray: Java hashCode() on deserialized byte array
numPartitions: Number of partitions you want per segment. Controls how data is divided within each segment.
Example:
{
"columnPartitionMap": {
"column_memberID": {
"functionName": "Murmur",
"numPartitions": 32
}
}
loadMode
Indicates how the segments will be loaded onto the server:
heap - load data directly into direct memory
mmap - load data segments to off-heap memory
columnMinMaxValueGeneratorMode
Generate min max values for columns. Supported values:
NONE - do not generate for any columns
ALL - generate for all columns
TIME - generate for only time column
NON_METRIC - generate for time and dimension columns
nullHandlingEnabled
Boolean to indicate whether to keep track of null values as part of the segment generation. This is required when using IS NULL or IS NOT NULL predicates in the query. Enabling this will lead to additional memory and storage usage per segment. By default, this is set to false.
aggregateMetrics
(deprecated, use Ingestion Aggregation) (only applicable for stream) set to true to pre-aggregate the metrics
optimizeDictionaryForMetrics
Set to true if you want to disable dictionaries for single valued metric columns. Only applicable to single-valued metric columns. If a column is specified Default false
noDictionarySizeRatioThreshold
If optimizeDictionaryForMetrics enabled, dictionary is not created for the metric columns for which noDictionaryIndexSize/ indexWithDictionarySize is less than the noDictionarySizeRatioThreshold
Default: 0.85
segmentNameGeneratorType
Type of segmentNameGenerator, default is SimpleSegmentNameGenerator.
See more on #segment-name-generator-spec
name
Name of the column
encodingType
Should be one of RAW or DICTIONARY
indexTypes
List of indexes to create on this column. Valid values are the ids of the index types (text, fst, h3, etc)
properties
JSON of key-value pairs containing additional properties associated with the index. The following properties are supported currently -
enableQueryCacheForTextIndex - set to true to enable caching for text index in Lucene
luceneMaxBufferSizeMB - Lucene IndexWriter buffer max size, defaults to 500
luceneUseCompoundFile - Lucene IndexWriter file format, defaults to true to use compound files
rawIndexWriterVersion
deriveNumDocsPerChunkForRawIndex
forwardIndexDisabled - set to true to disable the forward index, defaults to false