You haven't really told us _how_ you are indexing, so I'm going to
make some comments that may be irrelevant...
At 600M documents, you'll almost certainly have to shard your index.
It sounds like you're doing the sharding yourself in Lucene by having
different Lucene indexes based on date. As you
Dear Sir/Madam, I am Li Wei, from China, and I`m writing to you for your help.
Here is the problem I encountered:
There is a timing task set at night in our project which uses Lucene to build
index for the data from Oracle database. It was working fine at the beginning,
however, as the index
