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https://issues.apache.org/jira/browse/PHOENIX-4382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16300165#comment-16300165
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Vincent Poon commented on PHOENIX-4382:
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In the test class in the patch, there are tests with two trailing nulls after a
value, and two trailing nulls before a value. There's also a test with 298
nulls in between two values.
I can add tests for various values that start with separatorByte, to see if
they get returned properly.
> Immutable table SINGLE_CELL_ARRAY_WITH_OFFSETS values starting with separator
> byte return null in query results
> ---------------------------------------------------------------------------------------------------------------
>
> Key: PHOENIX-4382
> URL: https://issues.apache.org/jira/browse/PHOENIX-4382
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 4.14.0
> Reporter: Vincent Poon
> Assignee: Vincent Poon
> Attachments: PHOENIX-4382.v1.master.patch,
> PHOENIX-4382.v2.master.patch, UpsertBigValuesIT.java
>
>
> For immutable tables, upsert of some values like Short.MAX_VALUE results in a
> null value in query resultsets. Mutable tables are not affected. I tried
> with BigInt and got the same problem.
> For Short, the breaking point seems to be 32512.
> This is happening because of the way we serialize nulls. For nulls, we write
> out [separatorByte, #_of_nulls]. However, some data values, like
> Short.MAX_VALUE, start with separatorByte, we can't distinguish between a
> null and these values. Currently the code assumes it's a null when it sees a
> leading separatorByte, hence the incorrect query results.
> See attached test - testShort() , testBigInt()
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