Gunther Hagleitner created HIVE-6105:
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Summary: 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
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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