What does it mean when it is said in Solr indexing that the index is "eventually consistent"?
A) The index will only be consistent after a server restart.
B) The index will become consistent when there are no more transactions to index.
C) The index becomes consistent once a day when the index job runs.
D) The index can only be consistent when the Lucene index job eventually runs.

Question

Quizplus · Accepted Answer

"Eventually consistent" in Solr indexing means that the index will become consistent over time as all updates and transactions are processed. It may not be immediately consistent, but eventually it will reach a state where all indexed data is up to date. This is because Solr distributions can run on multiple servers with asynchronous replication, and it may take some time for updates to be replicated to all servers. Therefore, it is important to take this into account when designing applications that rely on Solr indexing. Option A is incorrect because a server restart is not required for the index to become eventually consistent. Option C is incorrect because the index job can run more frequently than once a day. Option D is incorrect because the Lucene index job is just one component of Solr indexing and does not solely determine eventual consistency.

What Does It Mean When It Is Said in Solr