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https://issues.apache.org/jira/browse/PHOENIX-3392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15596804#comment-15596804
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James Taylor commented on PHOENIX-3392:
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[~maryannxue] - looks like [~samarthjain] figured out the issue. Hopefully you
haven't spent time on it already.
> SortMergeJoinIT#testSubJoin[0] is failing with encodecolumns2 branch
> --------------------------------------------------------------------
>
> Key: PHOENIX-3392
> URL: https://issues.apache.org/jira/browse/PHOENIX-3392
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
>
> The SortMergeJoinIT#testSubJoin[0] is failing with encodecolumns2 branch. To
> repro, checkout the encodecolumns2 branch and run the SortMergeJoinIT tests.
> Here's the stack trace is here:
> https://builds.apache.org/job/Phoenix-encode-columns/16/testReport/org.apache.phoenix.end2end/SortMergeJoinIT/testSubJoin_0_/
> The basic idea of column encoding over mutable tables is that we take control
> of the column qualifier name, storing in PColumn the mapping of real column
> name to column qualifier name. We use serialized integers as the column
> qualifier names so that we can do positional lookups into the List<Cell> we
> get back from HBase APIs. There are a few "reserved" column qualifiers for
> things like our empty key value, etc.
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