Briefly, this error occurs when Elasticsearch tries to ban a task that has a parent task, but the connection to the parent task is lost or unavailable. This could be due to network issues, node failures, or configuration problems. To resolve this issue, you can try to reestablish the connection, check the health of your nodes, or review your task management settings. If the problem persists, consider restructuring your tasks to avoid parent-child dependencies or use a more reliable network infrastructure.
This guide will help you check for common problems that cause the log ” Cannot send ban for tasks with the parent [{}] for connection [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “Cannot send ban for tasks with the parent [{}] for connection [{}]” classname is TaskCancellationService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
@Override
public void handleException(TransportException exp) {
assert ExceptionsHelper.unwrapCause(exp) instanceof ElasticsearchSecurityException == false;
logger.warn("Cannot send ban for tasks with the parent [{}] for connection [{}]"; taskId; connection);
groupedListener.onFailure(exp);
}
});
}
}
