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The superclass changed from org.apache.hadoop.mapred.MapReduceBase
to org.apache.hadoop.mapreduce.Reducer
.
Removed interface org.apache.hadoop.mapred.Reducer
.
Removed Methods | |
void close() |
Will be called once all the intermediate keys and values are processed. |
void configure(JobConf ) |
Configures the Reduce plan the POPackage operator and the reporter thread |
Added Methods | |
void cleanup(Context ) |
Will be called once all the intermediate keys and values are processed. |
void setup(Context ) |
Configures the Reduce plan the POPackage operator and the reporter thread |
Changed Methods | ||
boolean processOnePackageOutput(Context ) |
Change in signature from OutputCollector to Context .Change in exceptions thrown from java.io.IOException to (java.io.IOException, java.lang.InterruptedException ). |
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void reduce(PigNullableWritable, |
Change in signature from (PigNullableWritable, Iterator, OutputCollector, Reporter ) to (PigNullableWritable, Iterable, Context ).Change in exceptions thrown from java.io.IOException to (java.io.IOException, java.lang.InterruptedException ).Change of visibility from public to protected. |
The reduce function which packages the key and List<Tuple> into key Bag<Tuple> after converting Hadoop type key into Pig type. |
void runPipeline(PhysicalOperator ) |
Change in exceptions: org.apache.pig.backend.executionengine.ExecException was removed.
java.lang.InterruptedException was added. |
@param leaf |
Changed Fields | ||
Context outputCollector |
Change in type from OutputCollector to Context . |
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