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Briefly, this error occurs when OpenSearch tries to update the status of a task that doesn’t exist or has already been completed and removed. This could be due to a timing issue, where the task has finished before the status update was attempted. To resolve this, you could ensure that status updates are only attempted on active tasks. Alternatively, you could handle this error in your application, ignoring it if the task was expected to be short-lived, or logging it for investigation if the task should have still been active.
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This guide will help you check for common problems that cause the log ” The task [{}] wasn’t found; status is not updated ” 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 “The task [{}] wasn’t found; status is not updated” classname is PersistentTasksClusterService.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
PersistentTasksCustomMetadata.getTaskWithId(currentState; id).getTaskName();
id;
allocationId
);
} else {
logger.warn("The task [{}] wasn't found; status is not updated"; id);
}
throw new ResourceNotFoundException("the task with id [" + id + "] and allocation id [" + allocationId + "] not found");
}
}
