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https://issues.apache.org/jira/browse/HIVE-5029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13755431#comment-13755431
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Hudson commented on HIVE-5029:
------------------------------
FAILURE: Integrated in Hive-trunk-h0.21 #2299 (See
[https://builds.apache.org/job/Hive-trunk-h0.21/2299/])
HIVE-5029 : direct SQL perf optimization cannot be tested well (Sergey
Shelukhin via Ashutosh Chauhan) (hashutosh:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1518953)
*
/hive/trunk/metastore/src/java/org/apache/hadoop/hive/metastore/ObjectStore.java
*
/hive/trunk/metastore/src/java/org/apache/hadoop/hive/metastore/RetryingRawStore.java
*
/hive/trunk/metastore/src/test/org/apache/hadoop/hive/metastore/VerifyingObjectStore.java
* /hive/trunk/ql/src/test/org/apache/hadoop/hive/ql/QTestUtil.java
> direct SQL perf optimization cannot be tested well
> --------------------------------------------------
>
> Key: HIVE-5029
> URL: https://issues.apache.org/jira/browse/HIVE-5029
> Project: Hive
> Issue Type: Test
> Reporter: Sergey Shelukhin
> Assignee: Sergey Shelukhin
> Priority: Critical
> Fix For: 0.12.0
>
> Attachments: HIVE-5029.D12483.1.patch, HIVE-5029.D12483.2.patch,
> HIVE-5029.patch, HIVE-5029.patch
>
>
> HIVE-4051 introduced perf optimization that involves getting partitions
> directly via SQL in metastore. Given that SQL queries might not work on all
> datastores (and will not work on non-SQL ones), JDO fallback is in place.
> Given that perf improvement is very large for short queries, it's on by
> default.
> However, there's a problem with tests with regard to that. If SQL code is
> broken, tests may fall back to JDO and pass. If JDO code is broken, SQL might
> allow tests to pass.
> We are going to disable SQL by default before the testing problem is resolved.
> There are several possible solultions:
> 1) Separate build for this setting. Seems like an overkill...
> 2) Enable by default; disable by default in tests, create a clone of
> TestCliDriver with a subset of queries that will exercise the SQL path.
> 3) Have some sort of test hook inside metastore that will run both ORM and
> SQL and compare.
> 3') Or make a subclass of ObjectStore that will do that. ObjectStore is
> already pluggable.
> 4) Write unit tests for one of the modes (JDO, as non-default?) and declare
> that they are sufficient; disable fallback in tests.
> 3' seems like the easiest. For now we will disable SQL by default.
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