GitHub user ijokarumawak opened a pull request:
https://github.com/apache/nifi/pull/2377
NIFI-4741: Avoid DelegationToken expiration at ReportLineageToAtlas
The reporting task used to hold a single AtlasClientV2 instance
throughout its runtime starting from being started until being stopped.
If it is configured to use Kerberos authentication for Atlas REST API, after
a published DelegationToken expires (10 hours by default), the reporting
task will not be able to recover from 401 Unauthorized state.
In order to avoid stucking in such situation, this commit changes the
way ReportLineageToAtlas uses AtlasClientV2 instance to create an
instance per onTrigger execution. It also addresses Kerberos ticket
expiration.
This approach incurs some overheads by initiating the client each time,
however, it should be insignificant from an overall processing time
perspective including analyzing NiFi flow and Provenance records.
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ijokarumawak/nifi nifi-4741
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/nifi/pull/2377.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2377
----
commit 8776904697adf714a2dbc1db0fb8788afa112fb9
Author: Koji Kawamura <ijokarumawak@...>
Date: 2018-01-05T10:23:28Z
NIFI-4741: Avoid DelegationToken expiration at ReportLineageToAtlas
The reporting task used to hold a single AtlasClientV2 instance
throughout its runtime starting from being started until being stopped.
If it is configured to use Kerberos authentication for Atlas REST API, after
a published DelegationToken expires (10 hours by default), the reporting
task will not be able to recover from 401 Unauthorized state.
In order to avoid stucking in such situation, this commit changes the
way ReportLineageToAtlas uses AtlasClientV2 instance to create an
instance per onTrigger execution. It also addresses Kerberos ticket
expiration.
This approach incurs some overheads by initiating the client each time,
however, it should be insignificant from an overall processing time
perspective including analyzing NiFi flow and Provenance records.
----
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