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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SOLR-5652) Heisenbug in DistribCursorPagingTest: "walk already seen ..."
Date Tue, 21 Jan 2014 22:08:19 GMT

     [ https://issues.apache.org/jira/browse/SOLR-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hoss Man updated SOLR-5652:
---------------------------

    Attachment: jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1217.log.txt
                jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1200.log.txt

Full logs from the two builds that have failed so far

> Heisenbug in DistribCursorPagingTest: "walk already seen ..."
> -------------------------------------------------------------
>
>                 Key: SOLR-5652
>                 URL: https://issues.apache.org/jira/browse/SOLR-5652
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Hoss Man
>            Assignee: Hoss Man
>         Attachments: jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1200.log.txt, jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1217.log.txt
>
>
> Twice now, Uwe's jenkins has encountered a "walk already seen ..." assertion failure
from DistribCursorPagingTest that I've been unable to fathom, let alone reproduce.
> Using this as a tracking issue to try and make sense of it.
> Summary of things noticed so far (in 2 failures):
> * So far only seen on http://jenkins.thetaphi.de
> * So far only seen on MacOSX
> * So far only seen on branch 4x
> * So far seen on both Java6 and Java7
> * fails occured in first block of randomized testing: 
> ** we've indexed a small number of randomized docs
> ** we're explicitly looping over every field and sorting in both directions
> * fails were both when sorting on one of the "\*_dv_last desc" fields (docValues=true,
sortMissingLast=true) 
> ** sort on same field asc has always worked fine just before this (fields are in arbitrary
order, but "asc" always tried before "desc")
> ** sorting on some other random fields has sometimes been tried before this and worked
> (specifics of each failure seen in the wild recorded in comments)



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