Nhat Nguyen 8e2f2be249
Track Lucene operations in engine explicitly (#29357)
Today we reply on `IndexWriter#hasDeletions` to check if an index
contains "update" operations. However, this check considers both deletes
and updates. This commit replaces that check by tracking and checking
Lucene operations explicitly. This would provide us stronger assertions.
2018-04-03 16:45:53 -04:00
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