The provenance repo is in large scale use by many many users so
fundamentally it does work. There are conditions that apparently
need improving. In the past couple days these items have been
flagged by folks on this list, JIRAs and PRs raised and merged,
all good. If you can help by creating a build of the latest and
confirm it fixes your case then please do so.
Thanks
On Fri, Apr 10, 2020 at 12:48 PM Darren Govoni
<dar...@ontrenet.com <mailto:dar...@ontrenet.com>> wrote:
It would seem the feature is either broken completely or only
works in specific conditions.
Can the Nifi team put a fix on their road map for this?
Its a rather central feature to Nifi.
Sent from my Verizon, Samsung Galaxy smartphone
------------------------------------------------------------------------
*From:* Wyllys Ingersoll <wyllys.ingers...@keepertech.com
<mailto:wyllys.ingers...@keepertech.com>>
*Sent:* Friday, April 10, 2020 11:17:42 AM
*To:* users@nifi.apache.org <mailto:users@nifi.apache.org>
<users@nifi.apache.org <mailto:users@nifi.apache.org>>
*Subject:* Re: Not Seeing Provenance data
I have a similar problem with viewing provenance. I have a
3-node cluster in a kubernetes environment, the
provenance_repository directory for each node is on a
persistent data store so it is not deleted or lost between
container restarts (which are not very common). My
nifi.provenance.repository.max.storage.time is 24 hours.
Whenever I try to view any provenance, nothing is ever
shown. If I manually inspect the provenance_repository
directory, there is a lucene index and TOC being created.
I see log messages like these:
Submitting query
+processorId:882133fe-b684-148b-ad88-7850437ca591 with
identifier 64a703fe-0171-1000-0000-000065abd91a against index
directories
[./provenance_repository/lucene-8-index-1560864819888]
Returning the following list of index locations because they
were finished being written to before 1586531601311: []
Found no events in the Provenance Repository. In order to
perform maintenace of the indices, will assume that the first
event time is now (1586531601311)
Any suggestions?
-Wyllys Ingersoll
On Thu, Apr 9, 2020 at 11:25 AM Dobbernack, Harald (Key-Work)
<harald.dobbern...@key-work.de
<mailto:harald.dobbern...@key-work.de>> wrote:
Hey Mark,
great news and thank you very much!
Happy Holidays!
Harald
*Von:* Mark Payne <marka...@hotmail.com
<mailto:marka...@hotmail.com>>
*Gesendet:* Donnerstag, 9. April 2020 17:18
*An:* users@nifi.apache.org <mailto:users@nifi.apache.org>
*Betreff:* Re: Not Seeing Provenance data
Thanks Harald,
I have created a Jira [1] for this. There’s currently a
PR up for it as well.
Thanks
-Mark
[1] https://issues.apache.org/jira/browse/NIFI-7346
On Apr 9, 2020, at 11:14 AM, Dobbernack, Harald
(Key-Work) <harald.dobbern...@key-work.de
<mailto:harald.dobbern...@key-work.de>> wrote:
Hi Mark,
I can confirm after testing that if no provenance
event has been generated in a time greater than the
setnifi.provenance.repository.max.storage.time then
as expected the last recorded provenance events don’t
exist anymore but also from then on any new
provenance events are also not searchable, the
provenance Search remains completely empty regardless
of how many flows are active. As described also
*.prov file is then missing in provenance repository.
After restart of Nifi new prov File will be generated
and provenance will work again, but only showing
stuff generated since last NiFi Start.
So yes, I’d say your Idea
‘If so, then I think that would understand why it
deleted the data. It’s trying to age off old data
but unfortunately it doesn’t perform a check to
first determine whether or not the “old file”
that it’s about to delete is also the “active
file”.’
fits very nicely to my test.
As a workaround we’re going to set a
greaternifi.provenance.repository.max.storage.time
until this can be resolved.
Thanks again for looking into this.
Harald
*Von:*Dobbernack, Harald (Key-Work)
*Gesendet:*Donnerstag, 9. April 2020 15:22
*An:*users@nifi.apache.org <mailto:users@nifi.apache.org>
*Betreff:*AW: Not Seeing Provenance data
Hi Mark,
thank you for looking into this.
The nifi.provenance.repository.max.storage.time
setting might explain why I haven’t been experiencing
the effect so often since changing from the default
to 120 hours a few months ago😉
But I believe provenance stopped working last time
although there was an ‘active’ flows in wait
Processor, expiring every hour, going on to ‘send a
message’ before being rerouted to the same wait
processor. I would have expected this generates
provenance entries? As I am not actually 100% sure
if that wait processor was in use when last
provenance got lost I will check with a testing
system to see if I can reproduce provenance breakage
when no active flows are around for a time greater
nifi.provenance.repository.max.storage.timeand I
will get back to you.
Thank you!
Harald
*Von:*Mark Payne <marka...@hotmail.com
<mailto:marka...@hotmail.com>>
*Gesendet:*Donnerstag, 9.April 2020 14:41
*An:*users@nifi.apache.org <mailto:users@nifi.apache.org>
*Betreff:*Re: Not Seeing Provenance data
Hey Daren, Herald,
Thanks for the note. I have seen this once before but
couldn’t figure out what caused it. Restarting
addressed the issue.
I think I may understand the problem, now, though,
after looking at it again.
In nifi.properties, there are a couple of property
named “nifi.provenance.repository.max.storage.time”
that defaults to “24 hours"
Is it possible that you went 24 hours (or whatever
value is set for that property) without generating
any Provenance events?
If so, then I think that would understand why it
deleted the data. It’s trying to age off old data but
unfortunately it doesn’t perform a check to first
determine whether or not the “old file” that it’s
about to delete is also the “active file”.
Can you confirm whether or not you would expect to
see 24 hours pass without any provenance data?
Thanks
-Mark
On Apr 9, 2020, at 4:32 AM, Dobbernack, Harald
(Key-Work) <harald.dobbern...@key-work.de
<mailto:harald.dobbern...@key-work.de>> wrote:
What I noticed is that as long as provenance is
working there will be *.prov files in the
directory. When Provenance isn’t working these
files are not to be seen. Maybe some Cleaning
Process deletes those files prematurely or the
process building them doesn’t work any more?
*Von:*Dobbernack, Harald (Key-Work)
<harald.dobbern...@key-work.de
<mailto:harald.dobbern...@key-work.de>>
*Gesendet:*Donnerstag, 9. April 2020 10:27
*An:*users@nifi.apache.org
<mailto:users@nifi.apache.org>
*Betreff:*AW: Not Seeing Provenance data
This is something I experience too from time to
time. My quick and dirty workaround is stop nifi,
delete everything in the provenance directory,
restart…. Then Provenance is usable again (of
course only with data since the delete) . I’m
hoping very much there is a better way, someone
can show us better settings or a potential bug
can be discovered…
*Von:*Darren Govoni <dar...@ontrenet.com
<mailto:dar...@ontrenet.com>>
*Gesendet:*Mittwoch, 8. April 2020 20:31
*An:*users@nifi.apache.org
<mailto:users@nifi.apache.org>
*Betreff:*Not Seeing Provenance data
Hi,
When I go to "View data provenance" in Nifi, I
never see any logs for my flow. Am I missing some
configuration setting somewhere?
thanks,
Darren
*Harald Dobbernack**
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