[jira] Commented: (HADOOP-2350) hbase scanner api returns null row names, or skips row names if different column families do not have entries for some rows

["Michael Bieniosek (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-2350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548506 ] 

Michael Bieniosek commented on HADOOP-2350:
-------------------------------------------

A secondary problem is that the HScannerInterface.iterator().next() sometimes returns a Map.Entry with a null value for both the key and value.  I think this may have something to do with the health of my cluster.

> hbase scanner api returns null row names, or skips row names if different column families do not have entries for some rows
> ---------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2350
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2350
>             Project: Hadoop
>          Issue Type: Bug
>          Components: contrib/hbase
>            Reporter: Michael Bieniosek
>             Fix For: 0.16.0
>
>         Attachments: TestScannerAPI.java
>
>
> I'm attaching a test case that fails.
> I noticed that if I create a table with two column families, and start a scanner on a row which only has an entry for one column family, the scanner will skip ahead to the row name for which the other column family has an entry.
> eg., if I insert rows so my table will look like this:
> {code}
> row - a:a - b:b
> aaa   a:1   nil
> bbb   a:2   b:2
> ccc   a:3   b:3
> {code}
> The scanner will tell me my table looks something like this:
> {code}
> row - a:a - b:b
> bbb   a:1   b:2
> bbb   a:2   b:3
> {code}

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