We have a Nifi flow which uses PutHDFS. We want to have it put files into HDFS of a specific size each time (similar to how Flume does it with hdfs.rollInterval). I thought maybe it was Block size attribute but that seems to be breaking my file writing completely. When I set Block Size to any value (I have tried 10kb and the syntax: 10 KB as well as well as a very small size like 500b), it runs without errors but no files show up in HDFS. If I remove the value from the Block Size attribute, it will put files in HDFS that are correct except I want to specify their size. Any insight is appreciated. ** As an update to this, I realized I was setting the Block size lower than the minimum block size required so it wasn't writing to HDFS. That being said, when I changed it to the minimum of 1 GB, it seems to still write files to HDFS of a size less than 1 KB so maybe Im not understanding how Block Size works? How does one specify the roll over size for files being written to HDFS? ** ... View more

We are having an issue previewing and downloading files from File View. I noticed one other user on here had a similar problem and their solutions did not work for us. When attempting to preview a file in file view, it is blank and we get an error in the logs: 02 Mar 2017 16:21:57,867 ERROR [ambari-client-thread-8502] [FILES 1.0.0 AUTO_FILES_INSTANCE] FilePreviewService:96 - Error occurred while previewing /topics/xyz/2017/02/15/xyz.1487116808176.log : And when we attempt to download a file, it states: { "status": 500, "message": "Server Error" } If anyone has any insight or have had this problem, please assist. Thank you. ... View more