Configuration Parameters

Plugin Parameters

A single configuration file is needed. The config file should be placed in the catalog folder (e.g.,/etc/presto/conf/catalog on EMR) and named tiledb.properties.

Sample file contents:

connector.name=tiledb
# Set read buffer to 10M per attribute
read-buffer-size=10485760

The following parameters can be configured in the tiledb.properties and are plugin-wide.

Parameter	Default	Datatype	Description
array-uris	""	String	CSV list of arrays to preload metadata on
read-buffer-size	10485760	Integer	Max read buffer size per attribute
write-buffer-size	10485760	Integer	Max write buffer size per attribute
aws-access-key-id	""	String	AWS_ACCESS_KEY_ID for S3 access
aws-secret-access-key	""	String	AWS_SECRET_ACCESS_KEY for S3 access
tiledb-config	""	String	TileDB config parameters in key1=value1,key2=value2 form

Session Parameters

These can be set as follows:

SQL

set session tiledb.<param>=<value>
// E.g., set session tiledb.splits=10

Unset session parameters inherit the plugin configuration defaults. The list of session parameters is summarized below"

Name	Default	Datatype	Description
read_buffer_size	Plugin	Integer	Max read buffer size per attribute
write_buffer_size	Plugin	Integer	Max write buffer size per attribute
aws_access_key_id	Plugin	String	AWS_ACCESS_KEY_ID for S3 access
aws_secret_access_key	Plugin	String	AWS_SECRET_ACCESS_KEY for S3 access
splits	-1	Integer	Number of splits to use per query, -1 means splits will be equal to number of workers
split_only_predicates	false	Boolean	Split only based on predicates pushed down from where clause
enable_stats	false	Boolean	Enable collecting and dumping connector stats to Presto log
tiledb_config	""	String	TileDB config parameters in key1=value1,key2=value2 form

Table properties

These are set upon table creation as follows:

SQL

create table my_table(
  ...
  ) with (uri = '<array-uri>', type='SPARSE', cell_order='ROW_MAJOR`, ...);

Name	Description	Default	Possible Values	Required
uri	Array URI	""	*	Yes
type	Array type	SPARSE	SPARSE, DENSE	No
cell_order	Cell order	ROW_MAJOR	ROW_MAJOR, COL_MAJOR	No
tile_order	Tile order	ROW_MAJOR	ROW_MAJOR, COL_MAJOR	No
capacity	Tile capacity	10000L	>0	No

Column Parameters

These are set upon table creation as follows:

SQL

create table my_table(
  dim0 bigint with (dimension=true, lower_bound=0, upper_bound=100, extent=10),
  ...
  ) with (uri = '<array-uri>', type = 'SPARSE');

Name	Description	Default	Possible Values	Required
dimension	Column is a dimension	False	True, False	No
lower_bound	Domain lower bound	0L	Any Long Value	No
upper_bound	Domain upper bound	Long.MAX_VALUE	Any Long Value	No
extent	Tile extent	10L	Any Long Value	No