Use an Iceberg cluster with Trino

Starting with Amazon EMR version 6.6.0, you can use Iceberg with your Trino cluster.

In this tutorial, you use the AWS CLI to work with Iceberg on an Amazon EMR Trino cluster. To use the console to create a cluster with Iceberg installed, follow the steps in Build an Apache Iceberg data lake using Amazon Athena, Amazon EMR, and AWS Glue.

Create an Iceberg cluster

To use Iceberg on Amazon EMR with the AWS CLI, first create a cluster with the following steps. For information on specifying the Iceberg classification using the AWS CLI, see Supply a configuration using the AWS CLI when you create a cluster or Supply a configuration using the Java SDK when you create a cluster.

1. Create an iceberg.properties file and set a value for your chosen catalog. For example, if you want to use the Hive metastore as your catalog, your file should have the following content.

   connector.name=iceberg
   hive.metastore.uri=thrift://localhost:9083

   If you want to use the AWS Glue Data Catalog as your store, your file should have the following content.

   connector.name=iceberg
   iceberg.catalog.type=glue

2. Create a bootstrap action that copies iceberg.properties from Amazon S3 to /etc/trino/conf/catalog/iceberg.properties, as in the following example. For information on bootstrap actions, see Create bootstrap actions to install additional software.

   set -ex
   sudo aws s3 cp s3://DOC-EXAMPLE-BUCKET/iceberg.properties /etc/trino/conf/catalog/iceberg.properties

3. Create a cluster with the following configuration, replacing the example bootstrap actions script path and key name with your own.

   aws emr create-cluster --release-label emr-6.7.0 \
   --applications Name=Trino \
   --region us-east-1 \
   --name My_Trino_Iceberg_Cluster \
   --bootstrap-actions '[{"Path":"s3://DOC-EXAMPLE-BUCKET","Name":"Add iceberg.properties"}]' \
   --instance-groups InstanceGroupType=MASTER,InstanceCount=1,InstanceType=c3.4xlarge InstanceGroupType=CORE,InstanceCount=3,InstanceType=c3.4xlarge \ 
   --use-default-roles \
   --ec2-attributes KeyName=<key-name>

Initialize a Trino session for Iceberg

To initialize a Trino session, run the following command.

trino-cli --catalog iceberg

Write to an Iceberg table

Create and write to your table with the following SQL commands.

trino> SHOW SCHEMAS;
trino> CREATE TABLE default.iceberg_table (
            id int,
            data varchar,
            category varchar)
       WITH (
            format = 'PARQUET',
            partitioning = ARRAY['category', 'bucket(id, 16)'],
            location = 's3://DOC-EXAMPLE-BUCKET/<prefix>')
          
trino> INSERT INTO default.iceberg_table VALUES (1,'a','c1'), (2,'b','c2'), (3,'c','c3');

Read from a table for Iceberg

To read from your Iceberg table, run the following command.

trino> SELECT * from default.iceberg_table;