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https://issues.apache.org/jira/browse/SOLR-5652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=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 ...
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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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