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		07-27-2023
	
	
	
	
	
	
	
	
	
	
	
	
	
	
			
      
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| Title | Views | Posted | 
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| 2374 | 09-14-2023 04:41 AM | 
			
    
	
		
		
		05-13-2024
	
		
		01:11 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 ' High core load average'...what value would mean high core load?  In my case I see it between 20-30 mostly. 
						
					
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		05-03-2024
	
		
		08:13 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							Thanks for this detailed reply.  I would investigate on these lines.  
						
					
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		05-03-2024
	
		
		03:37 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 @MattWho , GC stats would give information for entire cluster or that single node only? 
						
					
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		05-03-2024
	
		
		03:34 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 I have a nifi cluster, which keeps having issue of nodes getting disconnected and cluster is unstable.  What should be the approach to debug the issue? 
						
					
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			Apache NiFi
 
			
    
	
		
		
		05-03-2024
	
		
		03:01 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 I came across this:  Starting with the NiFi 1.0 release, a Zero-Leader Clustering paradigm is employed. Each node in a NiFi cluster performs the same tasks on the data, but each operates on a different set of data. Apache ZooKeeper elects a single node as the Cluster Coordinator, and failover is handled automatically by ZooKeeper. All cluster nodes report heartbeat and status information to the Cluster Coordinator. The Cluster Coordinator is responsible for disconnecting and connecting nodes. Additionally, every cluster has one Primary Node, also elected by ZooKeeper.  If nifi follows zero-leader paradigm, then what is the purpose of primary node? And how does it differ from other nodes? 
						
					
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			Apache NiFi
 
			
    
	
		
		
		04-23-2024
	
		
		09:35 PM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 For nifi, we have jvm options in bootstrap.conf:  java.arg.2=-Xms512m
java.arg.3=-Xmx512m  Then we also have env variables(got to know on google search,not from official documentation) that can be set from outside(like from kubernetes config yaml):  NIFI_JVM_HEAP_INIT
NIFI_JVM_HEAP_MAX  What's the connection between these 2 sets of properties? 
						
					
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			Apache NiFi
 
			
    
	
		
		
		04-22-2024
	
		
		03:16 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 I have nifi running in openshift, and observe that after some time of operation a dialog box pops up on nifi UI, containing following message, and pod restarts.     Application is not available The application is currently not serving requests at this endpoint. It may not have been started or is still starting.
Possible reasons you are seeing this page: The host doesn't exist. Make sure the hostname was typed correctly and that a route matching this hostname exists.
The host exists, but doesn't have a matching path. Check if the URL path was typed correctly and that the route was created using the desired path.
Route and path matches, but all pods are down. Make sure that the resources exposed by this route (pods, services, deployment configs, etc) have at least one pod running.  nifi logs dont show anything related to it though.  What can be the possible issue here?    
						
					
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			Apache NiFi
 
			
    
	
		
		
		04-22-2024
	
		
		12:52 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 I am observing following error for one of my nifi data flow:  o.a.nifi.processors.kite.InferAvroSchema InferAvroSchema[id=9fa25adc-91da-31e3-97ff-d5012c68588c] Failed to infer Avro schema for StandardFlowFileRecord[uuid=a8cf241e-8804-4177-837f-f832657sa596,claim=StandardContentClaim [resourceClaim=StandardResourceClaim[id=1713770110449-11, container=default, section=11], offset=0, length=44],offset=0,name=iSAM_ontEthPort.csv,size=44] due to java.lang.NullPointerException: No content to infer schema: java.lang.NullPointerException: No content to infer schema
java.lang.NullPointerException: No content to infer schema     What to make out of it? 
						
					
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			Apache NiFi
 
			
    
	
		
		
		04-03-2024
	
		
		07:14 PM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
				
		
	
		
					
							 In nifi, we set java memory configurations(Xms, Xmx) in bootstrap.conf.  Is it possible to set it via kubernetes yaml?  I tried with 'args' or with env variable JDK_JAVA_OPTIONS/JAVA_TOOL_OPTIONS , but none works. 
						
					
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			Apache NiFi
 
			
    
	
		
		
		03-28-2024
	
		
		03:49 AM
	
	
	
	
	
	
	
	
	
	
	
	
	
	
		
	
				
		
			
					
	
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							 Is it possible to set bootstrap.conf properties(java.arg.2, java.arg.3) in kubernetes config yaml? 
						
					
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			Apache NiFi