Task with id ” + taskId + ” already exist – How to solve this Elasticsearch error

Task with id ” + taskId + ” already exist – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” task with id ” + taskId + ” already exist ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: task and persistent.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them (free tool that requires no installation).

Log Context

Log”task with id {” + taskId + “} already exist”classname  is PersistentTasksClusterService.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

clusterService.submitStateUpdateTask("create persistent task"; new ClusterStateUpdateTask() {
  public ClusterState execute(ClusterState currentState) {
  PersistentTasksCustomMetadata.Builder builder = builder(currentState);
  if (builder.hasTask(taskId)) {
  throw new ResourceAlreadyExistsException("task with id {" + taskId + "} already exist");
  PersistentTasksExecutor taskExecutor = registry.getPersistentTaskExecutorSafe(taskName);
  taskExecutor.validate(taskParams; currentState);


Run the Check-Up to get a customized report like this:

Analyze your cluster