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https://issues.apache.org/jira/browse/ACCUMULO-338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190024#comment-13190024
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Billie Rinaldi commented on ACCUMULO-338:
-----------------------------------------
We tracked this down to reuse of Value objects by the RFile. Combiner should
make a copy of the Values. I'll make a functional test for this, too. Nice
catch, John!
> Combiners lose data when reading off of disk
> --------------------------------------------
>
> Key: ACCUMULO-338
> URL: https://issues.apache.org/jira/browse/ACCUMULO-338
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.4.0
> Reporter: John Vines
> Assignee: Billie Rinaldi
> Fix For: 1.4.0
>
>
> There is a bug with Combiners in 1.4 resulting in bad data-
> to recreate-
> createtable test;
> config -t test -s table.iterator.minc.vers=10
> config -t test -s table.iterator.majc.vers=10
> config -t test -s table.iterator.scan.vers=10
> insert r f q 1
> insert r f q 2
> insert r f q 3
> setiter -class org.apache.accumulo.core.iterators.user.SummingCombiner -scan
> -n summer -p 60 -t test
> true
> STRING
> scan
> flush
> scan
> deleteiter -t test -n summer -scan
> scan
> You will see all three values the first scan, 6 for the second scan, 4 for
> the third scan, and all three values for the 4th scan. In debug I saw teh
> values 2, 1, and 1 in that order in the Viterator.next method.
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