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HADOOP-9230. TestUniformSizeInputFormat fails intermittently. (kkambatl via tucu) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1451292 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Alejandro Abdelnur 2013-02-28 18:52:24 +00:00
parent a20ad24405
commit b0c23b2c27
2 changed files with 3 additions and 71 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
View File

@ -60,6 +60,9 @@ Release 2.0.4-beta - UNRELEASED
HADOOP-9342. Remove jline from distribution. (thw via tucu)
HADOOP-9230. TestUniformSizeInputFormat fails intermittently.
(kkambatl via tucu)
Release 2.0.3-alpha - 2013-02-06
INCOMPATIBLE CHANGES

71
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestUniformSizeInputFormat.java
View File

@ -33,8 +33,6 @@ import org.apache.hadoop.tools.CopyListing;
import org.apache.hadoop.tools.DistCpOptions;
import org.apache.hadoop.tools.StubContext;
import org.apache.hadoop.security.Credentials;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
@ -48,9 +46,6 @@ import java.util.Random;
public class TestUniformSizeInputFormat {
private static final Log LOG
= LogFactory.getLog(TestUniformSizeInputFormat.class);
private static MiniDFSCluster cluster;
private static final int N_FILES = 20;
private static final int SIZEOF_EACH_FILE=1024;
@ -118,12 +113,9 @@ public class TestUniformSizeInputFormat {
List<InputSplit> splits
= uniformSizeInputFormat.getSplits(jobContext);
List<InputSplit> legacySplits = legacyGetSplits(listFile, nMaps);
int sizePerMap = totalFileSize/nMaps;
checkSplits(listFile, splits);
checkAgainstLegacy(splits, legacySplits);
int doubleCheckedTotalSize = 0;
int previousSplitSize = -1;
@ -155,57 +147,6 @@ public class TestUniformSizeInputFormat {
Assert.assertEquals(totalFileSize, doubleCheckedTotalSize);
}
// From
// http://svn.apache.org/repos/asf/hadoop/mapreduce/trunk/src/tools/org/apache/hadoop/tools/DistCp.java
private List<InputSplit> legacyGetSplits(Path listFile, int numSplits)
throws IOException {
FileSystem fs = cluster.getFileSystem();
FileStatus srcst = fs.getFileStatus(listFile);
Configuration conf = fs.getConf();
ArrayList<InputSplit> splits = new ArrayList<InputSplit>(numSplits);
FileStatus value = new FileStatus();
Text key = new Text();
final long targetsize = totalFileSize / numSplits;
long pos = 0L;
long last = 0L;
long acc = 0L;
long cbrem = srcst.getLen();
SequenceFile.Reader sl = null;
LOG.info("Average bytes per map: " + targetsize +
", Number of maps: " + numSplits + ", total size: " + totalFileSize);
try {
sl = new SequenceFile.Reader(conf, SequenceFile.Reader.file(listFile));
for (; sl.next(key, value); last = sl.getPosition()) {
// if adding this split would put this split past the target size,
// cut the last split and put this next file in the next split.
if (acc + value.getLen() > targetsize && acc != 0) {
long splitsize = last - pos;
FileSplit fileSplit = new FileSplit(listFile, pos, splitsize, null);
LOG.info ("Creating split : " + fileSplit + ", bytes in split: " + splitsize);
splits.add(fileSplit);
cbrem -= splitsize;
pos = last;
acc = 0L;
}
acc += value.getLen();
}
}
finally {
IOUtils.closeStream(sl);
}
if (cbrem != 0) {
FileSplit fileSplit = new FileSplit(listFile, pos, cbrem, null);
LOG.info ("Creating split : " + fileSplit + ", bytes in split: " + cbrem);
splits.add(fileSplit);
}
return splits;
}
private void checkSplits(Path listFile, List<InputSplit> splits) throws IOException {
long lastEnd = 0;
@ -233,18 +174,6 @@ public class TestUniformSizeInputFormat {
}
}
private void checkAgainstLegacy(List<InputSplit> splits,
List<InputSplit> legacySplits)
throws IOException, InterruptedException {
Assert.assertEquals(legacySplits.size(), splits.size());
for (int index = 0; index < splits.size(); index++) {
FileSplit fileSplit = (FileSplit) splits.get(index);
FileSplit legacyFileSplit = (FileSplit) legacySplits.get(index);
Assert.assertEquals(fileSplit.getStart(), legacyFileSplit.getStart());
}
}
@Test
public void testGetSplits() throws Exception {
testGetSplits(9);