[jira] [Updated] (NIFI-4735) ParseEVTX only outputs one event per chunk

["Matt Burgess (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-4735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Burgess updated NIFI-4735:
-------------------------------
    Affects Version/s:     (was: 1.4.0)
               Status: Patch Available  (was: Open)

> ParseEVTX only outputs one event per chunk
> ------------------------------------------
>
>                 Key: NIFI-4735
>                 URL: https://issues.apache.org/jira/browse/NIFI-4735
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>            Reporter: Terry Brugger
>            Priority: Major
>         Attachments: EVTX2XML.xml, Screen Shot 2018-01-03 at 15.06.24.png
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> I have constructed a simple pipeline that reads a Windows EVTX binary file, runs it through ParseEvtx, and writes out the result (template attached). As a sample I fed it a 192MiB file and it only output 3.3MiB (see screenshot). The output file contains 3071 events. Not coincidentally, I am sure, 192MiB/64KiB = 3072, which would indicate that it only wrote out one event from each chunk. If I configure the processor to output by the chunk or event I get 3071 separate files with one event each. Unfortunately, I have no way to sanitize binary EVTX so I cannot provide the actual file used.
> By way of comparison, I ran the same EVTX file through evtx_dump.py from the python-evtx package (which I understand ParseEvtx was based on) and it produced 395,757 events -- on par with what I would expect. It also took much longer than NiFi -- like 30 minutes versus a few seconds -- which I also expect is consistent with processing the entire file.



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