This topic describes how to release an E-MapReduce (EMR) cluster if it is no longer needed. You can release only pay-as-you-go clusters.

Prerequisites

The cluster you want to release is in the Initializing, Running, or Idle state.

Background information

After you confirm the release of a cluster, the system performs the following operations to handle the cluster:
  1. Forcibly terminates all jobs in the cluster.
  2. Terminates and releases all ECS instances created for the cluster.

    The time needed to terminate and release the ECS instances depends on the size of the cluster but does not exceed five minutes. In most cases, the ECS instances can be released in seconds.

Procedure

  1. Log on to the Alibaba Cloud EMR console.
  2. In the top navigation bar, select the region where your cluster resides and select a resource group based on your business requirements.
  3. Click the Cluster Management tab.
  4. Find the cluster you want to release and choose More > Release in the Actions column.
    Alternatively, find the cluster you want to release and click Details in the Actions column. On the Cluster Overview page, choose Instance Status > Release in the upper-right corner.
  5. In the Cluster Management-Release message, click Release.