Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
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None
Description
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)