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https://issues.apache.org/jira/browse/HIVE-12175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15020554#comment-15020554
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Hive QA commented on HIVE-12175:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12773564/HIVE-12175.6.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 9 failed/errored test(s), 9834 tests executed
*Failed tests:*
{noformat}
TestHWISessionManager - did not produce a TEST-*.xml file
TestMiniLlapCliDriver - did not produce a TEST-*.xml file
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_notin
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_notin_having
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_explainuser_1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_dynpart_hashjoin_3
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_smb_empty
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_uri_import
org.apache.hive.jdbc.TestSSL.testSSLVersion
{noformat}

Test results: 
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6092/testReport
Console output: 
http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/6092/console
Test logs: 
http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-6092/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 9 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12773564 - PreCommit-HIVE-TRUNK-Build

> Upgrade Kryo version to 3.0.x
> -----------------------------
>
>                 Key: HIVE-12175
>                 URL: https://issues.apache.org/jira/browse/HIVE-12175
>             Project: Hive
>          Issue Type: Improvement
>          Components: Serializers/Deserializers
>    Affects Versions: 2.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-12175.1.patch, HIVE-12175.2.patch, 
> HIVE-12175.3.patch, HIVE-12175.3.patch, HIVE-12175.4.patch, 
> HIVE-12175.5.patch, HIVE-12175.6.patch
>
>
> Current version of kryo (2.22) has some issue (refer exception below and in 
> HIVE-12174) with serializing ArrayLists generated using Arrays.asList(). We 
> need to either replace all occurrences of  Arrays.asList() or change the 
> current StdInstantiatorStrategy. This issue is fixed in later versions and 
> kryo community recommends using DefaultInstantiatorStrategy with fallback to 
> StdInstantiatorStrategy. More discussion about this issue is here 
> https://github.com/EsotericSoftware/kryo/issues/216. Alternatively, custom 
> serilization/deserilization class can be provided for Arrays.asList.
> Also, kryo 3.0 introduced unsafe based serialization which claims to have 
> much better performance for certain types of serialization. 
> Exception:
> {code}
> Caused by: java.lang.NullPointerException
>       at java.util.Arrays$ArrayList.size(Arrays.java:2847)
>       at java.util.AbstractList.add(AbstractList.java:108)
>       at 
> org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:112)
>       at 
> org.apache.hive.com.esotericsoftware.kryo.serializers.CollectionSerializer.read(CollectionSerializer.java:18)
>       at 
> org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:694)
>       at 
> org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:106)
>       ... 57 more
> {code}



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