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From "Vincenzo D'Amore" <>
Subject Solr Cloud 6.x - rollback best practice
Date Wed, 12 Jul 2017 15:57:21 GMT

I'm moving to Solr Cloud 6.x and I see rollback cannot be supported when is
in Cloud mode.

In my scenario, there are basically two tasks (full indexing, partial

Full indexing

This is the most important case, where I really need the possibility to

The full reindex is basically done in 3 steps:

1. delete *:* all collection's documents
2. add all existing documents
3. commit

If during the step 2 something go wrong (usually some problem with the
source of data) I had to rollback.

Partial reindexing

Unlike the the former, this case is executed in only 2 steps (no delete)
and the number of documents indexed usually is small (or very small).

Even in this case if the step 2 go wrong I had to rollback.

Do you know if there is a common pattern, a best practice, something of
useful to handle a rollback if something go wrong in these cases?

My simplistic idea is to have two collections (active/passive), and switch
from one to another only when all the steps are completed successfully.

But, as you can understand, having two collections works well with full
indexing, but how do I handle a partial reindexing if something goes wrong?

So, I'll be grateful to whom would spend his/her time to give me a

Thanks in advance and best regards,

Vincenzo D'Amore
mobile: +39 349 8513251

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