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Posted to common-commits@hadoop.apache.org by cu...@apache.org on 2006/11/02 03:55:20 UTC
svn commit: r470209 - in /lucene/hadoop/trunk: CHANGES.txt
src/java/org/apache/hadoop/mapred/JobConf.java
src/java/org/apache/hadoop/mapred/MapTask.java
Author: cutting
Date: Wed Nov 1 18:55:20 2006
New Revision: 470209
URL: http://svn.apache.org/viewvc?view=rev&rev=470209
Log:
HADOOP-647. Permit map outputs to use a different compression type than job output. Contributed by Owen.
Modified:
lucene/hadoop/trunk/CHANGES.txt
lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/JobConf.java
lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/MapTask.java
Modified: lucene/hadoop/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/lucene/hadoop/trunk/CHANGES.txt?view=diff&rev=470209&r1=470208&r2=470209
==============================================================================
--- lucene/hadoop/trunk/CHANGES.txt (original)
+++ lucene/hadoop/trunk/CHANGES.txt Wed Nov 1 18:55:20 2006
@@ -134,6 +134,9 @@
types, replace Vector with ArrayList, etc.
(Konstantin Shvachko via cutting)
+38. HADOOP-647. Permit map outputs to use a different compression
+ type than the job output. (omalley via cutting)
+
Release 0.7.2 - 2006-10-18
Modified: lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/JobConf.java
URL: http://svn.apache.org/viewvc/lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/JobConf.java?view=diff&rev=470209&r1=470208&r2=470209
==============================================================================
--- lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/JobConf.java (original)
+++ lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/JobConf.java Wed Nov 1 18:55:20 2006
@@ -34,11 +34,7 @@
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.conf.Configuration;
-import org.apache.hadoop.io.Writable;
-import org.apache.hadoop.io.WritableComparable;
-import org.apache.hadoop.io.WritableComparator;
-import org.apache.hadoop.io.LongWritable;
-import org.apache.hadoop.io.Text;
+import org.apache.hadoop.io.*;
import org.apache.hadoop.io.compress.CompressionCodec;
import org.apache.hadoop.mapred.lib.IdentityMapper;
@@ -338,6 +334,28 @@
return getBoolean("mapred.compress.map.output", false);
}
+ /**
+ * Set the compression type for the map outputs.
+ * @param style NONE, RECORD, or BLOCK to control how the map outputs are
+ * compressed
+ */
+ public void setMapOutputCompressionType(SequenceFile.CompressionType style) {
+ set("map.output.compression.type", style.toString());
+ }
+
+ /**
+ * Get the compression type for the map outputs.
+ * @return the compression type, defaulting to job output compression type
+ */
+ public SequenceFile.CompressionType getMapOutputCompressionType() {
+ String val = get("map.output.compression.type");
+ if (val == null) {
+ return SequenceFile.getCompressionType(this);
+ } else {
+ return SequenceFile.CompressionType.valueOf(val);
+ }
+ }
+
/**
* Set the given class as the compression codec for the map outputs.
* @param codecClass the CompressionCodec class that will compress the
Modified: lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/MapTask.java
URL: http://svn.apache.org/viewvc/lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/MapTask.java?view=diff&rev=470209&r1=470208&r2=470209
==============================================================================
--- lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/MapTask.java (original)
+++ lucene/hadoop/trunk/src/java/org/apache/hadoop/mapred/MapTask.java Wed Nov 1 18:55:20 2006
@@ -137,7 +137,7 @@
CompressionType compressionType = CompressionType.NONE;
if (job.getCompressMapOutput()) {
// find the kind of compression to do, defaulting to record
- compressionType = SequenceFile.getCompressionType(job);
+ compressionType = job.getMapOutputCompressionType();
// find the right codec
Class codecClass =