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https://issues.apache.org/jira/browse/HIVE-6105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Navis updated HIVE-6105:
------------------------
Attachment: HIVE-6105.1.patch.txt
> LongWritable.compareTo needs shimming
> -------------------------------------
>
> Key: HIVE-6105
> URL: https://issues.apache.org/jira/browse/HIVE-6105
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.12.0
> Reporter: Gunther Hagleitner
> Attachments: HIVE-6105.1.patch.txt
>
>
> Compiled hive against hadoop-2. Running tests on hadoop 1 gives:
> Caused by: java.lang.NoSuchMethodError:
> org.apache.hadoop.io.LongWritable.compareTo(Lorg/apache/hadoop/io/LongWritable;)I
> at
> org.apache.hadoop.hive.ql.udf.UDAFPercentile$MyComparator.compare(UDAFPercentile.java:62)
> at
> org.apache.hadoop.hive.ql.udf.UDAFPercentile$MyComparator.compare(UDAFPercentile.java:58)
> at java.util.Arrays.mergeSort(Arrays.java:1270)
> at java.util.Arrays.sort(Arrays.java:1210)
> at java.util.Collections.sort(Collections.java:157)
> at
> org.apache.hadoop.hive.ql.udf.UDAFPercentile$PercentileLongEvaluator.terminate(UDAFPercentile.java:194)
> ... 20 more
> I think the problem is that the compareTo function has changed from using
> Object to using LongWritable as an argument. Seems this needs a shim.
> However, we should also make sure that this shim doesn't hit performance too
> hard.
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