Github user anandsubbu commented on the issue:
https://github.com/apache/metron/pull/817
You're right @nickwallen , it wouldn't work. I reworked on the patch and
here are the latest changes:
- moved the ES template installation back to the Indexing "start" method
- use a flag file to ensure the template installation runs only once. And
so any start/restart of Indexing topology does not get affected.
- enclosed the template installation in a try/except block so that we warn
and move on in the event of ES service not running.
I ran the following test scenarios to validate the changes:
**Full dev deployment**
- [x] Verified that the Indexing Start step also installs the ES templates.
- [x] Verified that the flag files are created under $METRON_HOME/config
- [x] Restarted Indexing service and verified that template install is not
called.
**12-node deployment**
- [x] Verified that the Indexing Start step also installs the ES templates.
- [x] Verified that the flag files are created under $METRON_HOME/config
- [x] Restarted Indexing service and verified that template install is not
called.
- [x] Stopped the ES service manually before the Indexing service starts
and confirmed that the Indexing service startup proceeds successfully with a
warning message indicating the template could not be installed
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