I have ran across re-indexing the data with zero-down time. However, what happens if new data comes in? Does the re-indexed index reflect the changes?
We recently changed the mapping which required us to reindex the data( about 1.8 documents). It took nearly an hour to finish the process. We shutdown the server during the process, because we weren't sure how we can handle the incoming data during the process.
Is is guaranteed to have the same dataset after the reindexing process? (we used Python helpers.reindex)