mikemccand commented on a change in pull request #688: LUCENE-8813: Ensure we
never apply deletes from a closed DWPTDeleteQueue
URL: https://github.com/apache/lucene-solr/pull/688#discussion_r288153694
##########
File path: lucene/core/src/java/org/apache/lucene/index/DocumentsWriter.java
##########
@@ -168,27 +168,28 @@ long updateDocValues(DocValuesUpdate... updates) throws
IOException {
}
private synchronized long
applyDeleteOrUpdate(ToLongFunction<DocumentsWriterDeleteQueue> function) throws
IOException {
- // TODO why is this synchronized?
+ // This method is synchronized to make sure we don't replace the
deleteQueue while applying this update / delete
+ // otherwise we might loose an update / delete if this happens
concurrently to a full flush.
Review comment:
`loose` -> `lose`
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