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Posted to dev@hive.apache.org by "Stephen Watt (JIRA)" <ji...@apache.org> on 2010/10/01 19:12:33 UTC
[jira] Created: (HIVE-1686) XMLEncoder failing to serialize classes
containing Enums for non-SUN JREs
XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
-------------------------------------------------------------------------
Key: HIVE-1686
URL: https://issues.apache.org/jira/browse/HIVE-1686
Project: Hadoop Hive
Issue Type: Bug
Components: Serializers/Deserializers
Affects Versions: 0.5.0
Environment: SLES 10 SP2, IBM Java 1.6 SR8
Reporter: Stephen Watt
Priority: Minor
Fix For: 0.5.1
If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes with Enums without an explicitly having an EnumPersistenceDelegate assigned to each class that needs to be serialized. This was an issue in SUN JDK 1.5 but not 1.6 and is still an issue in IBM Java 1.6.
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[jira] Commented: (HIVE-1686) XMLEncoder failing to serialize
classes containing Enums for non-SUN JREs
Posted by "Stephen Watt (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916966#action_12916966 ]
Stephen Watt commented on HIVE-1686:
------------------------------------
This issue will also be fixed in the JRE with the next release of IBM Java 1.6 (SR9) around the Dec 2010 timeframe.
> XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
> -------------------------------------------------------------------------
>
> Key: HIVE-1686
> URL: https://issues.apache.org/jira/browse/HIVE-1686
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Affects Versions: 0.5.0
> Environment: SLES 10 SP2, IBM Java 1.6 SR8
> Reporter: Stephen Watt
> Priority: Minor
> Fix For: 0.5.1
>
> Attachments: HIVE-1686.patch
>
>
> If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes with Enums without an explicitly having an EnumPersistenceDelegate assigned to each class that needs to be serialized. This was an issue in SUN JDK 1.5 but not 1.6 and is still an issue in IBM Java 1.6.
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[jira] Updated: (HIVE-1686) XMLEncoder failing to serialize classes
containing Enums for non-SUN JREs
Posted by "Stephen Watt (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephen Watt updated HIVE-1686:
-------------------------------
Attachment: HIVE-1686.patch
> XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
> -------------------------------------------------------------------------
>
> Key: HIVE-1686
> URL: https://issues.apache.org/jira/browse/HIVE-1686
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Affects Versions: 0.5.0
> Environment: SLES 10 SP2, IBM Java 1.6 SR8
> Reporter: Stephen Watt
> Priority: Minor
> Fix For: 0.5.1
>
> Attachments: HIVE-1686.patch
>
>
> If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes with Enums without an explicitly having an EnumPersistenceDelegate assigned to each class that needs to be serialized. This was an issue in SUN JDK 1.5 but not 1.6 and is still an issue in IBM Java 1.6.
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[jira] Updated: (HIVE-1686) XMLEncoder failing to serialize classes
containing Enums for non-SUN JREs
Posted by "Carl Steinbach (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Carl Steinbach updated HIVE-1686:
---------------------------------
Fix Version/s: (was: 0.5.1)
> XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
> -------------------------------------------------------------------------
>
> Key: HIVE-1686
> URL: https://issues.apache.org/jira/browse/HIVE-1686
> Project: Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Affects Versions: 0.5.0
> Environment: SLES 10 SP2, IBM Java 1.6 SR8
> Reporter: Stephen Watt
> Priority: Minor
> Attachments: HIVE-1686.patch
>
>
> If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes with Enums without an explicitly having an EnumPersistenceDelegate assigned to each class that needs to be serialized. This was an issue in SUN JDK 1.5 but not 1.6 and is still an issue in IBM Java 1.6.
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[jira] Commented: (HIVE-1686) XMLEncoder failing to serialize
classes containing Enums for non-SUN JREs
Posted by "Stephen Watt (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HIVE-1686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12916964#action_12916964 ]
Stephen Watt commented on HIVE-1686:
------------------------------------
To resolve this issue, I have provided a patch that has added a variety of enumPersistenceDelegates for the classes throwing this Exception to the XMLEncoder in org.apache.hadoop.hive.ql.exec.Utilities.serializeMapRedWork()
> XMLEncoder failing to serialize classes containing Enums for non-SUN JREs
> -------------------------------------------------------------------------
>
> Key: HIVE-1686
> URL: https://issues.apache.org/jira/browse/HIVE-1686
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Affects Versions: 0.5.0
> Environment: SLES 10 SP2, IBM Java 1.6 SR8
> Reporter: Stephen Watt
> Priority: Minor
> Fix For: 0.5.1
>
> Attachments: HIVE-1686.patch
>
>
> If one is using Hive 0.5 with IBM Java 1.6 certain Hive Queries will fail in the Hive CLI, such as "SELECT Count(1) from TABLE" with the error "failed to write expression: GenericUDAFEvaluator$Mode=Class.new()". This is due to the fact that XMLEncoder in the JRE's beans.jar is not able to serialize Classes with Enums without an explicitly having an EnumPersistenceDelegate assigned to each class that needs to be serialized. This was an issue in SUN JDK 1.5 but not 1.6 and is still an issue in IBM Java 1.6.
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