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10-23-2017
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07-27-2018
01:56 PM
Problem has been resolved after i deleted users.xml and authorizations.xml both files across all cluster and restarted. It seems policies got mismatched between one node to all nodes.
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07-27-2018
01:53 AM
Hi, I have HDF 3.1 installed in 5 nodes (n1,n2,n3,n4 and n5). When i start cluster through ambari , all nodes are connected but "n1" node stopping. When i went to nifi-app.log i see below error. "Failed to connect node to cluster because local flow is different than cluster flow". So i copied flow.xml.gz from n3 to n1 node and started node. I still see same error. This time i i took backup of flow.xml.gz and removed all flow.xml.gz files from all 5 nodes and started all 5 nodes. i still see n2,n3,n4 and n5 connected and n1 nifi service stopped and nifi-app.log still showing same below error. ----------------------------------------------------------------------------------------------------------------- 2018-07-26 18:32:42,499 ERROR [main] o.a.nifi.controller.StandardFlowService Failed to load flow from cluster due to: org.apache.nifi.controller.UninheritableFlowException: Failed to connect node to cluster because local flow is different than cluster flow. org.apache.nifi.controller.UninheritableFlowException: Failed to connect node to cluster because local flow is different than cluster flow. at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:937) at org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:516) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:872) at org.apache.nifi.NiFi.<init>(NiFi.java:160) at org.apache.nifi.NiFi.main(NiFi.java:268) Caused by: org.apache.nifi.controller.UninheritableFlowException: Proposed Authorizer is not inheritable by the flow controller because of Authorizer differences: Proposed Authorizations do not match current Authorizations: Proposed fingerprint is not inheritable because the current access policies is not empty. at org.apache.nifi.controller.StandardFlowSynchronizer.sync(StandardFlowSynchronizer.java:307) at org.apache.nifi.controller.FlowController.synchronize(FlowController.java:1622) at org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO.load(StandardXMLFlowConfigurationDAO.java:84) at org.apache.nifi.controller.StandardFlowService.loadFromBytes(StandardFlowService.java:723) at org.apache.nifi.controller.StandardFlowService.loadFromConnectionResponse(StandardFlowService.java:912) ... 4 common frames omitted ------------------------------------------------------------------------------------------------------------------------ The newly generated flow.xml.gz file is having nothing but below xml tags. <?xml version="1.0" encoding="UTF-8" standalone="no"?> <flowController encoding-version="1.3"> <maxTimerDrivenThreadCount>10</maxTimerDrivenThreadCount> <maxEventDrivenThreadCount>5</maxEventDrivenThreadCount> <registries/> <rootGroup> <id>d8e3ef08-0164-1000-f1dd-27c8a40f9d60</id> <name>NiFi Flow</name> <position x="0.0" y="0.0"/> <comment/> </rootGroup> <controllerServices/> <reportingTasks/> </flowController> Any help would be appreciate to resolve this issue.
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Apache NiFi
10-23-2017
11:34 PM
I would like to use NIFI to retreive files from external SFTP and store on local disk with RAID 10 and retrieve back whenever i need it. is it possible ? That means pretty much i want replace SAN or Isilon type of storage and use NIFI as a processing engine and storage engine.
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Apache NiFi