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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9283) Struct and StructIterator should properly handle trailing nulls
Date Wed, 28 Aug 2013 22:01:55 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13752922#comment-13752922

Hudson commented on HBASE-9283:

SUCCESS: Integrated in HBase-TRUNK #4441 (See [https://builds.apache.org/job/HBase-TRUNK/4441/])
HBASE-9283 Struct and StructIterator should properly handle trailing nulls (stack: rev 1518320)
* /hbase/trunk/hbase-common/src/main/java/org/apache/hadoop/hbase/types/Struct.java
* /hbase/trunk/hbase-common/src/main/java/org/apache/hadoop/hbase/types/StructIterator.java
* /hbase/trunk/hbase-common/src/test/java/org/apache/hadoop/hbase/types/TestStruct.java
* /hbase/trunk/hbase-common/src/test/java/org/apache/hadoop/hbase/types/TestStructNullExtension.java

> Struct and StructIterator should properly handle trailing nulls
> ---------------------------------------------------------------
>                 Key: HBASE-9283
>                 URL: https://issues.apache.org/jira/browse/HBASE-9283
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.95.2
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>             Fix For: 0.98.0, 0.96.0
>         Attachments: 0001-HBASE-9283-Struct-trailing-null-handling.patch, 0001-HBASE-9283-Struct-trailing-null-handling.patch,
> For a composite row key, Phoenix strips off trailing null columns values in the row key.
The reason this is important is that then new nullable row key columns can be added to a schema
without requiring any data upgrade to existing rows. Otherwise, adding new row key columns
to the end of a schema becomes extremely cumbersome, as you'd need to delete all existing
rows and add them back with a row key that includes a null value.
> Rather than Phoenix needing to modify the iteration code everywhere (as [~ndimiduk] outlined
here: https://issues.apache.org/jira/browse/HBASE-8693?focusedCommentId=13744499&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13744499),
it'd be better if StructIterator handled this out-of-the-box. Otherwise, if Phoenix has to
specialize this, we'd lose the interop piece which is the justification for switching our
type system to this new one in the first place.

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