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https://issues.apache.org/jira/browse/HIVE-11878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15030036#comment-15030036
]
Hive QA commented on HIVE-11878:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12774196/HIVE-11878.2.patch
{color:red}ERROR:{color} -1 due to build exiting with an error
Test results:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6145/testReport
Console output:
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6145/console
Test logs:
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6145/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Tests exited with: NonZeroExitCodeException
Command 'bash /data/hive-ptest/working/scratch/source-prep.sh' failed with exit
status 1 and output '+ [[ -n /usr/java/jdk1.7.0_45-cloudera ]]
+ export JAVA_HOME=/usr/java/jdk1.7.0_45-cloudera
+ JAVA_HOME=/usr/java/jdk1.7.0_45-cloudera
+ export
PATH=/usr/java/jdk1.7.0_45-cloudera/bin/:/usr/java/jdk1.7.0_45-cloudera/bin:/usr/local/apache-maven-3.0.5/bin:/usr/local/apache-maven-3.0.5/bin:/usr/java/jdk1.7.0_45-cloudera/bin:/usr/local/apache-ant-1.9.1/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/hiveptest/bin
+
PATH=/usr/java/jdk1.7.0_45-cloudera/bin/:/usr/java/jdk1.7.0_45-cloudera/bin:/usr/local/apache-maven-3.0.5/bin:/usr/local/apache-maven-3.0.5/bin:/usr/java/jdk1.7.0_45-cloudera/bin:/usr/local/apache-ant-1.9.1/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/hiveptest/bin
+ export 'ANT_OPTS=-Xmx1g -XX:MaxPermSize=256m '
+ ANT_OPTS='-Xmx1g -XX:MaxPermSize=256m '
+ export 'M2_OPTS=-Xmx1g -XX:MaxPermSize=256m -Dhttp.proxyHost=localhost
-Dhttp.proxyPort=3128'
+ M2_OPTS='-Xmx1g -XX:MaxPermSize=256m -Dhttp.proxyHost=localhost
-Dhttp.proxyPort=3128'
+ cd /data/hive-ptest/working/
+ tee /data/hive-ptest/logs/PreCommit-HIVE-TRUNK-Build-6145/source-prep.txt
+ [[ false == \t\r\u\e ]]
+ mkdir -p maven ivy
+ [[ git = \s\v\n ]]
+ [[ git = \g\i\t ]]
+ [[ -z master ]]
+ [[ -d apache-github-source-source ]]
+ [[ ! -d apache-github-source-source/.git ]]
+ [[ ! -d apache-github-source-source ]]
+ cd apache-github-source-source
+ git fetch origin
+ git reset --hard HEAD
HEAD is now at 7984738 HIVE-12465: Hive might produce wrong results when
(outer) joins are merged (Jesus Camacho Rodriguez, reviewed by Ashutosh Chauhan)
+ git clean -f -d
+ git checkout master
Already on 'master'
+ git reset --hard origin/master
HEAD is now at 7984738 HIVE-12465: Hive might produce wrong results when
(outer) joins are merged (Jesus Camacho Rodriguez, reviewed by Ashutosh Chauhan)
+ git merge --ff-only origin/master
Already up-to-date.
+ git gc
+ patchCommandPath=/data/hive-ptest/working/scratch/smart-apply-patch.sh
+ patchFilePath=/data/hive-ptest/working/scratch/build.patch
+ [[ -f /data/hive-ptest/working/scratch/build.patch ]]
+ chmod +x /data/hive-ptest/working/scratch/smart-apply-patch.sh
+ /data/hive-ptest/working/scratch/smart-apply-patch.sh
/data/hive-ptest/working/scratch/build.patch
The patch does not appear to apply with p0, p1, or p2
+ exit 1
'
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12774196 - PreCommit-HIVE-TRUNK-Build
> ClassNotFoundException can possibly occur if multiple jars are registered
> one at a time in Hive
> ------------------------------------------------------------------------------------------------
>
> Key: HIVE-11878
> URL: https://issues.apache.org/jira/browse/HIVE-11878
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 1.2.1
> Reporter: Ratandeep Ratti
> Assignee: Ratandeep Ratti
> Labels: URLClassLoader
> Attachments: HIVE-11878 ClassLoader Issues when Registering
> Jars.pptx, HIVE-11878.2.patch, HIVE-11878.patch, HIVE-11878_approach3.patch,
> HIVE-11878_approach3_per_session_clasloader.patch,
> HIVE-11878_approach3_with_review_comments.patch,
> HIVE-11878_approach3_with_review_comments1.patch, HIVE-11878_qtest.patch
>
>
> When we register a jar on the Hive console. Hive creates a fresh URL
> classloader which includes the path of the current jar to be registered and
> all the jar paths of the parent classloader. The parent classlaoder is the
> current ThreadContextClassLoader. Once the URLClassloader is created Hive
> sets that as the current ThreadContextClassloader.
> So if we register multiple jars in Hive, there will be multiple
> URLClassLoaders created, each classloader including the jars from its parent
> and the one extra jar to be registered. The last URLClassLoader created will
> end up as the current ThreadContextClassLoader. (See details:
> org.apache.hadoop.hive.ql.exec.Utilities#addToClassPath)
> Now here's an example in which the above strategy can lead to a CNF exception.
> We register 2 jars *j1* and *j2* in Hive console. *j1* contains the UDF class
> *c1* and internally relies on class *c2* in jar *j2*. We register *j1* first,
> the URLClassLoader *u1* is created and also set as the
> ThreadContextClassLoader. We register *j2* next, the new URLClassLoader
> created will be *u2* with *u1* as parent and *u2* becomes the new
> ThreadContextClassLoader. Note *u2* includes paths to both jars *j1* and *j2*
> whereas *u1* only has paths to *j1* (For details see:
> org.apache.hadoop.hive.ql.exec.Utilities#addToClassPath).
> Now when we register class *c1* under a temporary function in Hive, we load
> the class using {code} class.forName("c1", true,
> Thread.currentThread().getContextClassLoader()) {code} . The
> currentThreadContext class-loader is *u2*, and it has the path to the class
> *c1*, but note that Class-loaders work by delegating to parent class-loader
> first. In this case class *c1* will be found and *defined* by class-loader
> *u1*.
> Now *c1* from jar *j1* has *u1* as its class-loader. If a method (say
> initialize) is called in *c1*, which references the class *c2*, *c2* will not
> be found since the class-loader used to search for *c2* will be *u1* (Since
> the caller's class-loader is used to load a class)
> I've added a qtest to explain the problem. Please see the attached patch
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