jfrazee commented on a change in pull request #5098:
URL: https://github.com/apache/nifi/pull/5098#discussion_r675244787



##########
File path: 
nifi-nar-bundles/nifi-azure-bundle/nifi-azure-processors/src/main/java/org/apache/nifi/processors/azure/storage/ListAzureDataLakeStorage.java
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@@ -226,9 +239,12 @@ protected String getPath(ProcessContext context) {
             options.setRecursive(recurseSubdirectories);
 
             Pattern baseDirectoryPattern = Pattern.compile("^" + baseDirectory 
+ "/?");
+            final String tempFilePrefix = 
defaultIfBlank(System.getProperty("tempFilePrefix"), TEMP_FILE_PREFIX);

Review comment:
       @exceptionfactory @timeabarna There's temp file handling to be 
considered in both the List and the Put so wanted to summarize here as well. 
IMO, List should probably filter _ and . by default, but it's configurable so 
still up to the user. The temp files written by Put should probably default to 
being written in a hidden directory and have random prefixes, but with the 
directory configurable so it could potentially be not in the same directory.
   
   What do you think?




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