Frank Rosner created ZEPPELIN-1939:
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Summary: Imported and scheduled notebooks getting deleted from the
filesystem
Key: ZEPPELIN-1939
URL: https://issues.apache.org/jira/browse/ZEPPELIN-1939
Project: Zeppelin
Issue Type: Bug
Affects Versions: 0.6.2
Reporter: Frank Rosner
h4. Problem
We are facing the problem that from time to time notebooks are disappearing on
users. When we investigate we notice that they are actually deleted from the
filesystem (git marks them as deleted, we have the git storage enabled).
It was very difficult to isolate the problem and we were not able to fully
reproduce it but rather gathered the following information:
- (probably) all disappearing notebooks have been imported using the JSON
import from the UI
- (probably) all disappearing notebooks have been scheduled using the built-in
scheduler from the UI
- there are notebooks which are scheduled but never disappeared; they are
probably not imported
- there are notebooks which are imported but never disappeared; they are not
scheduled
- there are notebooks which are imported and scheduled but don't disappear
- there seems to be a pattern that it starts deleting from the ones that are
scheduled first (e.g. "library notebook" which is scheduled first, dissapeared
a lot already)
- other Zeppelins which import but never used the scheduler do not have
disappearing notebooks
So it totally looks like something triggered through the scheduling which is
somehow related to the import function. I don't know about the internals (how
notebook IDs are generated etc.) but it seems that when the scheduler kicks in,
something causes a hiccup.
Any ideas?
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