MAPREDUCE-2815. JavaDoc does not generate correctly for MultithreadedMapRunner. Contributed by Chris Palmer.
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@ -387,6 +387,9 @@ Release 2.7.0 - UNRELEASED
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MAPREDUCE-6261. NullPointerException if MapOutputBuffer.flush invoked
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MAPREDUCE-6261. NullPointerException if MapOutputBuffer.flush invoked
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twice (Tsuyoshi OZAWA via jlowe)
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twice (Tsuyoshi OZAWA via jlowe)
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MAPREDUCE-2815. JavaDoc does not generate correctly for
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MultithreadedMapRunner. (Chris Palmer via aajisaka)
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Release 2.6.1 - UNRELEASED
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Release 2.6.1 - UNRELEASED
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INCOMPATIBLE CHANGES
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INCOMPATIBLE CHANGES
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@ -36,17 +36,17 @@ import java.io.IOException;
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import java.util.concurrent.*;
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import java.util.concurrent.*;
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/**
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/**
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* Multithreaded implementation for @link org.apache.hadoop.mapred.MapRunnable.
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* Multithreaded implementation for {@link MapRunnable}.
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* <p>
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* <p>
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* It can be used instead of the default implementation,
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* It can be used instead of the default implementation,
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* @link org.apache.hadoop.mapred.MapRunner, when the Map operation is not CPU
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* of {@link org.apache.hadoop.mapred.MapRunner}, when the Map
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* bound in order to improve throughput.
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* operation is not CPU bound in order to improve throughput.
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* <p>
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* <p>
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* Map implementations using this MapRunnable must be thread-safe.
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* Map implementations using this MapRunnable must be thread-safe.
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* <p>
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* <p>
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* The Map-Reduce job has to be configured to use this MapRunnable class (using
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* The Map-Reduce job has to be configured to use this MapRunnable class (using
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* the JobConf.setMapRunnerClass method) and
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* the JobConf.setMapRunnerClass method) and
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* the number of thread the thread-pool can use with the
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* the number of threads the thread-pool can use with the
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* <code>mapred.map.multithreadedrunner.threads</code> property, its default
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* <code>mapred.map.multithreadedrunner.threads</code> property, its default
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* value is 10 threads.
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* value is 10 threads.
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* <p>
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* <p>
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