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https://issues.apache.org/jira/browse/TRAFODION-2467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15847988#comment-15847988
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ASF GitHub Bot commented on TRAFODION-2467:
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GitHub user zellerh opened a pull request:
https://github.com/apache/incubator-trafodion/pull/941
[TRAFODION-2467] HBase region start key straddling a datetime key error
Make sure we complete a partial region start key for a datetime column
such that year, month and day are set to at least 1.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zellerh/incubator-trafodion bug/cses_jan-17
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/941.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #941
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commit 911ca41ad8c073285665f4c6eb128b2e0e5030fb
Author: Hans Zeller <[email protected]>
Date: 2017-02-01T04:00:17Z
[TRAFODION-2467] HBase region start key straddling a datetime key error
Make sure we complete a partial region start key for a datetime column
such that year, month and day are set to at least 1.
----
> HBase region start key straddling a datetime key value gives error or crashes
> -----------------------------------------------------------------------------
>
> Key: TRAFODION-2467
> URL: https://issues.apache.org/jira/browse/TRAFODION-2467
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-cmp
> Affects Versions: 2.0-incubating
> Environment: Any
> Reporter: Hans Zeller
> Assignee: Hans Zeller
>
> There is no simple test case for this, but Wei-Shiun has observed a problem
> that fits the theory, and I was able to force a problem in a debugger.
> The issue is this: HBase creates region start keys, and the length of those
> keys may provide only a part (a prefix) of a column value. So, HBase may have
> a 2 byte region start key of \x07\xCE for a table with a DATE key. This
> provides the year, 1998 in this case, but not month or day. Normally, we
> extend this partial key with zeroes for most data types, including
> date/time/timestamp. However, for these datetime types we need to add logic
> that set the year, month and day fields to 1 if extending the key with zeroes
> would make it 0 otherwise.
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