Query Options
This document contains all the available query options
Supported Query Options
timeoutMs
Timeout of the query in milliseconds
Use table/broker level timeout
enableNullHandling
false (disabled)
explainPlanVerbose
Return verbose result for EXPLAIN query (introduced in 0.11.0)
false (not verbose)
useMultistageEngine
Use multi-stage engine to execute the query (introduced in 0.11.0)
false (use single-stage engine)
maxExecutionThreads
Maximum threads to use to execute the query. Useful to limit the resource usage for expensive queries
Half of the CPU cores for non-group-by queries; all CPU cores for group-by queries
numReplicaGroupsToQuery
When replica-group based routing is enabled, use it to query multiple replica-groups (introduced in 0.11.0)
1 (only query servers within the same replica-group)
minSegmentGroupTrimSize
Server level config
minServerGroupTrimSize
Server level config
serverReturnFinalResult
For aggregation and group-by queries, ask servers to directly return final results instead of intermediate results for aggregations. Can be applied when the group key is server partitioned, i.e. the column(s) is partitioned, and all the data for a partition is served by the same server.
true when a single server is queried, false otherwise
serverReturnFinalResultKeyUnpartitioned
For group-by queries, ask servers to directly return final results instead of intermediate results for aggregations. Different from serverReturnFinalResult, this option should be used when the group key is not server partitioned, but the aggregated column is server partitioned. It is particularly useful for distinct count queries. When this option is enabled, server will return final results, but won't directly trim the result to the query limit.
false
skipIndexes
Which indexes to skip usage of (i.e. scan instead), per-column. This is useful for side-by-side comparison/debugging. There can be cases where the use of an index is actually more expensive than performing a scan of the docs which match other filters. One such example could be a low-selectivity inverted index used in conjunction with another highly selective filter.
Config can be specified using url parameter format: skipIndexes='col1=inverted,range&col2=inverted'
Possible index types to skip are: sorted, range, inverted, H3. To find out which indexes are used to resolve a given query, use the EXPLAIN query.
null/empty (use all available indexes)
skipUpsert
false (exclude the replaced records)
useStarTree
Useful to debug the star-tree index (introduced in 0.11.0)
true (use star-tree if available)
AndScanReordering
disabled
maxRowsInJoin
Configure maximum rows allowed in a join operation. This limit is applied to both the hash table build phase for the join's right input as well as the number of joined rows emitted after matching with the join's left input.
default value read from cluster config
if not set, the default will be
2^20 (1024*1024)
inPredicatePreSorted
(Only apply to STRING columns) Indicates that the values in the IN clause is already sorted, so that Pinot doesn't need to sort them again at query time
false (values in IN predicate is not pre-sorted)
inPredicateLookupAlgorithm
(Only apply to STRING columns) The algorithm to use to look up the dictionary ids for the IN clause values.
DIVIDE_BINARY_SEARCH: Sort the IN clause values and do binary search on both dictionary and IN clause values at same time to reduce the value lookups
SCAN: Sort the IN clause values and scan both dictionary and IN clause values to get the matching dictionary idsPLAIN_BINARY_SEARCH: Do not sort the IN clause values, but directly binary search each IN clause value in the dictionary
DIVIDE_BINARY_SEARCH
maxServerResponseSizeBytes
Long value config indicating the maximum length of the serialized response per server for a query.
Overriding priortiy order: 1. QueryOption -> maxServerResponseSizeBytes
2. QueryOption -> maxQueryResponseSizeBytes
3. TableConfig -> maxServerResponseSizeBytes
4. TableConfig -> maxQueryResponseSizeBytes
5. BrokerConfig -> maxServerResponseSizeBytes
6. BrokerConfig -> maxServerResponseSizeBytes
maxQueryResponseSizeBytes
Long value config indicating the maximum serialized response size across all servers for a query. This value is equally divided across all servers processing the query.
Overriding priortiy order: 1. QueryOption -> maxServerResponseSizeBytes
2. QueryOption -> maxQueryResponseSizeBytes
3. TableConfig -> maxServerResponseSizeBytes
4. TableConfig -> maxQueryResponseSizeBytes
5. BrokerConfig -> maxServerResponseSizeBytes
6. BrokerConfig -> maxServerResponseSizeBytes
filteredAggregationsSkipEmptyGroups
This config can be set to true to avoid computing all the groups in a group by query with only filtered aggregations (and no non-filtered aggregations). By default, the groups are computed over all the rows returned by the main filter, even if certain rows will never match any of the aggregation filters. This is the standard SQL behavior. However, if the selectivity of the main filter is very high as compared to the selectivity of the aggregation filters, this query option can help provide a big performance boost if the empty groups aren't required. For instance, a query like SELECT SUM(X) FILTER (WHERE Y = 1) FROM mytable will compute the groups over all the rows in the table by default since there's no main query filter. Setting this query option to true in such cases can massively improve performance if there's an inverted index on column Y for instance.
false (i.e., all groups are computed by default as per standard SQL)
dropResults
Set dropResults=true in the config to drop the resultTable from the response. Use this option to troubleshoot a customer's query (which may have sensitive data in the result) using metadata only.
false
skipUnavailableServers
Set skipUnavailableServers=true in the config to continue sending queries to remaining servers if dispatching a query fails.
false
Set Query Options
SET statement
After release 0.11.0, query options can be set using the SET statement:
OPTION keyword (deprecated)
Before release 0.11.0, query options can be appended to the query with the OPTION keyword:
REST API
Query options can be specified in API using queryOptions as key and ';' separated key-value pairs. Alternatively, we can also use the SET keyword in the sql query.
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