[LUCENE-7491] Unexpected merge exception when merging sparse points fields

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.3, 7.0
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Michael McCandless
• Created: 11/Oct/16 23:55
• Updated: 28/Aug/22 15:04
• Resolved: 12/Oct/16 13:47

Description

Spinoff from this user thread: http://markmail.org/thread/vwdvjgupyz6heep5

If you have a segment that has points, but a given field ("id") didn't index points, and a later segment where field "id" does index points, when try to merge those segments we hit this (incorrect!) exception:

Caused by: org.apache.lucene.index.MergePolicy$MergeException: java.lang.IllegalArgumentException: field="id" did not index point values
	at __randomizedtesting.SeedInfo.seed([9F3E7B030EF482BD]:0)
	at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:668)
	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:648)
Caused by: java.lang.IllegalArgumentException: field="id" did not index point values
	at org.apache.lucene.codecs.lucene60.Lucene60PointsReader.getBKDReader(Lucene60PointsReader.java:126)
	at org.apache.lucene.codecs.lucene60.Lucene60PointsReader.size(Lucene60PointsReader.java:224)
	at org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.merge(Lucene60PointsWriter.java:169)
	at org.apache.lucene.index.SegmentMerger.mergePoints(SegmentMerger.java:173)
	at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:122)
	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4287)
	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3864)
	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588)
	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626)