Hoss Man created LUCENE-7301:
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Summary: updateNumericDocValue mixed with updateDocument can cause
data loss in some randomized testing
Key: LUCENE-7301
URL: https://issues.apache.org/jira/browse/LUCENE-7301
Project: Lucene - Core
Issue Type: Bug
Reporter: Hoss Man
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.
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