I have orc files in external path of Hive ORC table. I want to merge the ORC files in this path to single file using the Orc Core API: <code>publicstaticList<Path> mergeFiles(Path outputPath,OrcFile.WriterOptions options,List<Path> inputFiles)throwsIOExceptionMerges multiple ORC files that all have the same schema to produce a single ORC file.The merge will reject files that aren't compatible with the merged file so the output list may be shorter than the input list. The stripes are copied as serialized byte buffers. The user metadata are merged and files that disagree on the value associated with a key will be rejected. For this i need to initialize WriterOptions(Properties tableProperties, Configuration conf) with tableProperties populated with that of the external table from hive. Any help in this is much appreciated? ... View more

can i programatically stop another processor using execute script or custom processor? I see some methods like publicProcessGroup getGroup(finalString id) in org.apache.nifi.controller.FlowController.java. Does nifi provide api like this which can be used in custom processors? ... View more

I want to query all the provenance of a particular processor( I will pass the id of the processor) within specified processor group only ( I will pass the processor group id) (These are the ones which i get if i right click a processor and hit Data Provenance). I tried passing the request body {"provenance":{"results":"provenanceEvents": [{"componentId": "04a12312-12335....."}]}} But did not get the desired results... Illustrations with results is highly appreciated.. ... View more

How does ".dynamicallyModifiesClasspath" communicates to the framework to update classpath with external paths? Basic search lead to AbstractConfiguredComponent.java which identifies this and invokes "reload(additionalUrls)". Could not find what this method does? ... View more

In controller-services, for ex: HiveConnectionPool there is a property called "Password". Is it possible to add the capability of hidden show (input type="password") like behaviour? through code changes in NIFI framework ? ... View more