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MAPREDUCE-3630. Fixes a NullPointer exception while running TeraGen - if a map is asked to generate 0 records. (Contributed by Mahadev Konar)

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1235641 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Siddharth Seth 2012-01-25 06:30:09 +00:00
parent c43a5a992e
commit a02f07c4bc
2 changed files with 6 additions and 2 deletions
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3
hadoop-mapreduce-project/CHANGES.txt
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@ -555,6 +555,9 @@ Release 0.23.1 - Unreleased
MAPREDUCE-3717. JobClient test jar has missing files to run all the test programs. MAPREDUCE-3717. JobClient test jar has missing files to run all the test programs.
(mahadev) (mahadev)
MAPREDUCE-3630. Fixes a NullPointer exception while running TeraGen - if a
map is asked to generate 0 records. (Mahadev Konar via sseth)
Release 0.23.0 - 2011-11-01 Release 0.23.0 - 2011-11-01
INCOMPATIBLE CHANGES INCOMPATIBLE CHANGES

3
hadoop-mapreduce-project/hadoop-mapreduce-examples/src/main/java/org/apache/hadoop/examples/terasort/TeraGen.java
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@ -238,9 +238,11 @@ public void map(LongWritable row, NullWritable ignored,
@Override @Override
public void cleanup(Context context) { public void cleanup(Context context) {
if (checksumCounter != null) {
checksumCounter.increment(total.getLow8()); checksumCounter.increment(total.getLow8());
} }
} }
}
private static void usage() throws IOException { private static void usage() throws IOException {
System.err.println("teragen <num rows> <output dir>"); System.err.println("teragen <num rows> <output dir>");
@ -307,5 +309,4 @@ public static void main(String[] args) throws Exception {
int res = ToolRunner.run(new Configuration(), new TeraGen(), args); int res = ToolRunner.run(new Configuration(), new TeraGen(), args);
System.exit(res); System.exit(res);
} }
} }