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https://issues.apache.org/jira/browse/SOLR-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13897043#comment-13897043
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Steve Rowe edited comment on SOLR-5652 at 2/10/14 9:31 PM:
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{quote}
bq. Resolving, as I think we have now addressed all of the
missing-docvalues-related failures we've seen.
I actually want to keep this one open a bit ... give it another week or two,
and assuming no more failures i want to dial back on some of the extra logging
we added here to be less verbose in the non-failure case.
{quote}
Sure, makes sense.
was (Author: steve_rowe):
{quote}
bq. Resolving, as I think we have now addressed all of the
missing-docvalues-related failures we've seen.
I actually want to keep this one open a bit ... give it another week or two,
and assuming no more failures i want to dial back on some of the extra logging
we added here to be less verbose in the non-failure case.
{quote}
Sure, make sense.
> 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
> Fix For: 4.7
>
> Attachments: 129.log, 372.log,
> SOLR-5652-dont-sort-on-any-dv-fields-when-codec-doesnt-support-missing-dvs.patch,
> SOLR-5652.codec.skip.dv.patch, SOLR-5652.nocommit.patch, SOLR-5652.patch,
> bin_dv.post-patch.log.txt,
> jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1200.log.txt,
> jenkins.thetaphi.de_Lucene-Solr-4.x-MacOSX_1217.log.txt,
> str_dv.post-patch.log.txt
>
>
> Several times now, Uwe's jenkins has encountered a "walk already seen ..."
> assertion failure from DistribCursorPagingTest that I've been unable to
> fathom, let alone reproduce (although sarowe was able to trigger a similar,
> non-reproducible seed, failure on his machine)
> Using this as a tracking issue to try and make sense of it.
> Summary of things noticed so far:
> * So far only seen on http://jenkins.thetaphi.de & sarowe's mac
> * So far seen on MacOSX and Linux
> * So far seen on branch 4x and trunk
> * So far seen on Java6, Java7, and Java8
> * 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 sorting on one of the "\*_dv_last" or "\*_dv_first" fields
> (docValues=true, either sortMissingLast=true OR sortMissingFirst=true)
> ** for desc sorts, sort on same field asc has 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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