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

["Michael McCandless (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-7301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302178#comment-15302178 ] 

Michael McCandless commented on LUCENE-7301:
--------------------------------------------

Thanks [~hossman] I'll have a look!  Love the test name :)

> 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
>         Attachments: LUCENE-7301.patch
>
>
> 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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