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Yonik Seeley commented on SOLR-8586: ------------------------------------ bq. It isn't stated, but I assume the replica does a full sync if its fingerprint, after sync, does not match the leader's? right. bq. Are there any scale concerns around calculating the fingerprint? Say, if there are 100,000,000 (non-deleted) docs in the index? Yes, this needs to be tested. We can do some caching if it's an issue. bq. In a high volume situation (1000's updates / sec), will the leader's fingerprint calculation be in perfect sync with the last versions it is communicating to the replica? No, but in a high volume situation, we won't be able to sync up by requesting a few missed docs from the leader anyway, so it probably doesn't matter. This is more for both low update scenarios, and for bringing the whole cluster back up. > Implement hash over all documents to check for shard synchronization > -------------------------------------------------------------------- > > Key: SOLR-8586 > URL: https://issues.apache.org/jira/browse/SOLR-8586 > Project: Solr > Issue Type: Improvement > Reporter: Yonik Seeley > Attachments: SOLR-8586.patch, SOLR-8586.patch > > > An order-independent hash across all of the versions in the index should > suffice. The hash itself is pretty easy, but we need to figure out > when/where to do this check (for example, I think PeerSync is currently used > in multiple contexts and this check would perhaps not be appropriate for all > PeerSync calls?) -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org