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Posted to issues@hive.apache.org by "Rajat Khandelwal (JIRA)" <ji...@apache.org> on 2015/08/07 09:14:45 UTC
[jira] [Updated] (HIVE-11278) Partition.setOutputFormatClass should
not do toString for Class object
[ https://issues.apache.org/jira/browse/HIVE-11278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rajat Khandelwal updated HIVE-11278:
------------------------------------
Attachment: (was: HIVE-11278_2015-07-20_16:06:40.patch)
> Partition.setOutputFormatClass should not do toString for Class object
> -----------------------------------------------------------------------
>
> Key: HIVE-11278
> URL: https://issues.apache.org/jira/browse/HIVE-11278
> Project: Hive
> Issue Type: Bug
> Reporter: Rajat Khandelwal
> Assignee: Rajat Khandelwal
>
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/metadata/Partition.java#L286
> inside setInputFormatClass, we're doing:
> {noformat}
> public void setInputFormatClass(Class<? extends InputFormat> inputFormatClass) {
> this.inputFormatClass = inputFormatClass;
> tPartition.getSd().setInputFormat(inputFormatClass.getName());
> }
> {noformat}
> But inside setOutputFormatClass, we're doing toString for class, instead of getName().
> {noformat}
> public void setOutputFormatClass(Class<? extends HiveOutputFormat> outputFormatClass) {
> this.outputFormatClass = outputFormatClass;
> tPartition.getSd().setOutputFormat(HiveFileFormatUtils
> .getOutputFormatSubstitute(outputFormatClass).toString());
> }
> {noformat}
> Difference is that, for Class A.class, toString is "class A.class", getName is "A.class". So Class.forName(cls.getName()) succeeds, but Class.forName(cls.toString()) is not valid.
> So if you get a partition, set outputformat, and make an alter call, then get the partition again and make a getOutputFormatClass call on that object, it throws a ClassNotFoundException on https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/metadata/Partition.java#L316, because it's basically calling Class.forName("class a.b.c.ClassName.class") which is wrong!
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