[LUCENE-7301] updateNumericDocValue mixed with updateDocument can cause data loss in some randomized testing

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.5.2, 5.6, 6.0.2, 6.1, 7.0
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Chris M. Hostetter
• Created: 26/May/16 00:30
• Updated: 28/Aug/22 14:58
• Resolved: 17/Jun/16 14:10

Description

SOLR-5944 has been held up by a while due to some extremely rare randomized test failures.

Ishan and I have been working on whitling those Solr test failures down, trying to create more isolated reproducable test failures, and i think i've tracked it down to a bug in IndexWriter when the client calls to updateDocument intermixed with calls to updateNumericDocValue AND IndexWriterConfig.setMaxBufferedDocs is very low (i suspect "how low" depends on the number of quantity/types of updates – but just got something that reproduced, and haven't tried reproducing with higher values of maxBufferedDocs and larger sequences of updateDocument / updateNumericDocValue calls.

Issue Links

• blocks: SOLR-5944 Support updates of numeric DocValues