Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.
Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.
Briefly, this error occurs when OpenSearch fails to register a persistent task due to a conflict, such as a duplicate task ID or a network issue. To resolve this, you can try the following: 1) Check if there are duplicate task IDs and resolve any conflicts. 2) Verify the network connectivity between the nodes. 3) Restart the OpenSearch service to clear any temporary issues. 4) Check the OpenSearch logs for more detailed error information.
For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.
This guide will help you check for common problems that cause the log ” Fatal error registering persistent task [ ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: task, persistent.
Overview
In OpenSearch, persistent refers to cluster settings that persist across cluster restarts. This setting is used in Cluster Update API calls. Persistent settings can also be configured in the opensearch.yml file.
Examples
## enable shard routing
PUT /_cluster/settings
{
"persistent" : {
"cluster.routing.allocation.enable" : "all"
}
}
## enable rebalancing of shards
PUT /_cluster/settings
{
"persistent" : {
"cluster.routing.rebalance.enable" : "all"
}
}
## limit the heap size for fielddata
PUT /_cluster/settings
{
"persistent" : {
“indices.breaker.fielddata.limit”: "30%"
}
}Log Context
Log “Fatal error registering persistent task [” classname is PersistentTasksNodeService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
AllocatedPersistentTask task;
try {
task = (AllocatedPersistentTask) taskManager.register("persistent"; taskInProgress.getTaskName() + "[c]"; request);
} catch (Exception e) {
logger.error("Fatal error registering persistent task [" + taskInProgress.getTaskName()
+ "] with id [" + taskInProgress.getId() + "] and allocation id [" + taskInProgress.getAllocationId()
+ "]; removing from persistent tasks"; e);
notifyMasterOfFailedTask(taskInProgress; e);
return;
}
