Installing and Configuring the VAST Connector for Trino

VAST provides a Trino server and VAST Connector for Trino in a docker image.

Download the image for your version of VAST Cluster from https://hub.docker.com/r/vastdataorg/trino-vast. Follow the instructions there to configure the image on your client.

Compatibility of Trino versions with VAST Cluster

Configuring Trino

vast.properties

The Trino image includes a VAST configuration file, vast.properties, which looks like this:

connector.name=vast
endpoint={VAST_ENDPOINT}
region=us-east-1
access_key_id={VAST_ACCESS_KEY_ID}
secret_access_key={VAST_SECRET_ACCESS_KEY}

# Preliminary tuning parameters
num_of_splits=64
num_of_subsplits=10
vast.http-client.request-timeout=60m
vast.http-client.idle-timeout=60m

data_endpoints={VAST_DATA_ENDPOINTS}

vast.http-client.request-timeout=100h
vast.http-client.idle-timeout=290s
vast.http-client.max-connections=100
vast.http-client.max-connections-per-server=50

Over-the-wire Compression of Query Results

You can configure the connector to compress query results as they are sent to the client, using zstandard compression.

To do this, add this line to the vast.properties file:

vast.compression=zstd

jvm.config

Add these lines to the jvm.config file:

--add-opens=java.base/java.nio=ALL-UNNAMED
--add-opens=java.base/java.lang=ALL-UNNAMED
--add-exports=java.base/sun.nio.ch=ALL-UNNAMED