Is there an option to mirror the LF search index so that when the state changes to unknown a mirrored index kicks in until we can re-build the original.
Hey Chad,
This isn't an option that's currently available. Theoretically, if you were able to replicate the index and somehow keep it up to date, you should be able to use that in lieu of the original, but I'm not sure how you might go about doing that as the duplicate would need to be updated constantly. I've spoken with a developer about this, so they are aware of the request, and it will be prioritized for a future release.
Hey Chad,
Another thing I forgot to mention is that we do have another similar feature that's supported:
LFFTS fail-over - This allows users to run two LFFTS instances on different machines. If one instance is down, search will switch to the other one automatically. The two instances share a single copy of index files, which means this feature does not help when index files are corrupted.
For more information, check out this white paper!
Ok, I mostly just wanted to make sure there was not currently an option that I did not know of. From what I have read about index files they are prone to corruption since anytime the service is not able to perform a close operation they are considered corrupted. It is not a big deal to re-build form scratch in most cases but I expect the solution to minimal downtime would be a witness/principle/mirror setup.
Hey Chad,
Usually, LFFTS can rollback .IDX files to a correct status when error occurs.
When LFFTS service is not able to be stopped in time, LFFTS will be terminated by windows service control manager. But .IDX files are not corrupted, LFFTS can rollback the .IDX files on the next run. So two copies of .IDX files are not necessary at this situation.
You may try increase shutdown time for services to close properly.
Thanks
Xiang