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https://issues.apache.org/jira/browse/HIVE-1335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12864629#action_12864629
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John Sichi commented on HIVE-1335:
----------------------------------
If you use these settings, you'll get exactly what you're after:
{noformat}
<ivy-module version="2.0">
<info organisation="org.apache.hadoop.hive" module="metastore"/>
<dependencies>
<dependency org="hadoop" name="core"
rev="${hadoop.version.ant-internal}">
<artifact name="hadoop" type="source" ext="tar.gz"/>
</dependency>
<dependency org="commons-dbcp" name="commons-dbcp" rev="1.2.2">
<exclude module="commons-pool" />
</dependency>
<dependency org="commons-pool" name="commons-pool" rev="1.2">
<exclude module="commons-collections" />
<exclude module="xerces" />
<exclude module="xml-apis" />
</dependency>
<dependency org="org.datanucleus" name="datanucleus-connectionpool"
rev="1.0.2">
<exclude module="proxool" />
<exclude module="c3p0" />
<exclude module="datanucleus-core" />
<exclude module="datanucleus-rdbms" />
<exclude module="commons-collections" />
<exclude module="commons-pool" />
</dependency>
</dependencies>
</ivy-module>
jsichi-mac:metastore jsichi$ ant ivy-retrieve
Buildfile: build.xml
ivy-init-dirs:
ivy-download:
[get] Getting:
http://repo2.maven.org/maven2/org/apache/ivy/ivy/2.1.0/ivy-2.1.0.jar
[get] To: /Users/jsichi/open/hive-trunk/build/ivy/lib/ivy-2.1.0.jar
[get] Not modified - so not downloaded
ivy-probe-antlib:
ivy-init-antlib:
ivy-init:
ivy-resolve:
[ivy:resolve] :: Ivy 2.1.0 - 20090925235825 :: http://ant.apache.org/ivy/ ::
[ivy:resolve] :: loading settings :: file =
/Users/jsichi/open/hive-trunk/ivy/ivysettings.xml
[ivy:resolve] downloading
http://repo1.maven.org/maven2/commons-dbcp/commons-dbcp/1.2.2/commons-dbcp-1.2.2.jar
...
[ivy:resolve] .........................................................
[ivy:resolve] ............................. (118kB)
[ivy:resolve] .. (0kB)
[ivy:resolve] [SUCCESSFUL ] commons-dbcp#commons-dbcp;1.2.2!commons-dbcp.jar
(3271ms)
[ivy:resolve] downloading
http://repo1.maven.org/maven2/commons-pool/commons-pool/1.2/commons-pool-1.2.jar
...
[ivy:resolve] ............................... (41kB)
[ivy:resolve] .. (0kB)
[ivy:resolve] [SUCCESSFUL ] commons-pool#commons-pool;1.2!commons-pool.jar
(2412ms)
[ivy:resolve] downloading
http://repo1.maven.org/maven2/org/datanucleus/datanucleus-connectionpool/1.0.2/datanucleus-connectionpool-1.0.2.jar
...
[ivy:resolve] ............ (14kB)
[ivy:resolve] .. (0kB)
[ivy:resolve] [SUCCESSFUL ]
org.datanucleus#datanucleus-connectionpool;1.0.2!datanucleus-connectionpool.jar
(2683ms)
ivy-retrieve:
BUILD SUCCESSFUL
{noformat}
Personally, I agree that the cost/benefit of ivy is shaky, but if Hive as a
project has chosen it, then we should use it where possible. If that decision
needs to be revisited, then it would be good to resolve that.
> DataNucleus should use connection pooling
> -----------------------------------------
>
> Key: HIVE-1335
> URL: https://issues.apache.org/jira/browse/HIVE-1335
> Project: Hadoop Hive
> Issue Type: Improvement
> Reporter: Edward Capriolo
> Assignee: Edward Capriolo
> Fix For: 0.6.0
>
> Attachments: commons-dbcp-1.2.2.jar, commons-dbcp.LICENSE,
> commons-pool-1.2.jar, commons-pool.LICENSE,
> datanucleus-connectionpool-1.0.2.jar, datanucleus-connectionpool.LICENSE,
> hive-1335.patch.txt
>
>
> Currently each Data Nucleus operation disconnects and reconnects to the
> MetaStore over jdbc. Queries fail to even explain properly in cases where a
> table has many partitions. This is fixed by enabling one parameter and
> including several jars.
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