Configuring Table Replication

Configuring table replication between two Data Fabric clusters involves using maprcli commands to configure cross-cluster trust, register the destination gateway, and set up replication. This task contains an example of configuring simple primary-secondary table replication between two clusters.

About this task

This task configures simple primary-secondary table replication between two clusters.

Procedure

  1. Configure cross-cluster trust between the two clusters.
  2. Register the destination gateway on the source node by executing the cluster gateway set command.
    In the following example:

    • The name of the remote cluster is: mydfcluster2

    • The gateway service name is: mip-ap77-n3-vm02.mip.your.company.net:10007

    maprcli cluster gateway set -dstcluster mydfcluster2 -gateways "mip-ap77-n3-vm02.mip.your.company.net:10007"

    You can obtain the gateway service name for a cluster by executing the following command on the cluster:

    kubectl exec -i admincli-0 -n dataplatform -- /bin/bash -c "maprcli cluster gateway list"
  3. Set up primary-secondary replication for an existing source table by executing the following command: 
    maprcli table replica autosetup
  4. Check the replication status by executing the following command: 
    maprcli table replica list

Configuring Table Replication

echo mapr | maprlogin password
echo -e "create '/tmp/t1', 'cf1'\nput '/tmp/t1', 'r1', 'cf1:c1', 'v1'\nlist '/tmp/ t1'\nscan '/tmp/t1'\nexit" | /usr/bin/hbase shell
maprcli table replica autosetup -path /tmp/t1 -replica /mapr/mydfcluster2/t2 sleep 30
maprcli table replica list -path /tmp/t1
echo -e "put '/tmp/t1', 'r2', 'cf1:c1', 'v2'\nexit" | /usr/bin/hbase shell
echo -e "scan '/tmp/t1'\nscan '/mapr/mydfcluster2/t2'\nexit" | /usr/bin/hbase shell