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HDFS-3902. TestDatanodeBlockScanner#testBlockCorruptionPolicy is broken. Contributed by Andy Isaacson 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1384083 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Eli Collins 2012-09-12 18:39:52 +00:00
parent 4c983a3108
commit 2e7d2b2e6b
5 changed files with 28 additions and 8 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -616,6 +616,9 @@ Release 2.0.2-alpha - 2012-09-07
HDFS-3432. TestDFSZKFailoverController tries to fail over too early (todd)
HDFS-3902. TestDatanodeBlockScanner#testBlockCorruptionPolicy is broken.
(Andy Isaacson via eli)
Release 2.0.0-alpha - 05-23-2012
INCOMPATIBLE CHANGES

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockPoolSliceScanner.java
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@ -374,7 +374,8 @@ class BlockPoolSliceScanner {
throttler.setBandwidth(Math.min(bw, MAX_SCAN_RATE));
}
private void verifyBlock(ExtendedBlock block) {
@VisibleForTesting
void verifyBlock(ExtendedBlock block) {
BlockSender blockSender = null;
/* In case of failure, attempt to read second time to reduce

3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataBlockScanner.java
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@ -172,7 +172,8 @@ public class DataBlockScanner implements Runnable {
return blockPoolScannerMap.size();
}
private synchronized BlockPoolSliceScanner getBPScanner(String bpid) {
@VisibleForTesting
synchronized BlockPoolSliceScanner getBPScanner(String bpid) {
return blockPoolScannerMap.get(bpid);
}

21
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDatanodeBlockScanner.java
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@ -34,14 +34,19 @@ import java.util.regex.Pattern;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.impl.Log4JLogger;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
import org.apache.hadoop.hdfs.protocol.HdfsConstants.DatanodeReportType;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataNodeTestUtils;
import org.apache.hadoop.hdfs.server.namenode.FSNamesystem;
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.util.Time;
import org.apache.log4j.Level;
import org.junit.Test;
/**
@ -59,6 +64,10 @@ public class TestDatanodeBlockScanner {
private static Pattern pattern_blockVerify =
Pattern.compile(".*?(SCAN_PERIOD)\\s*:\\s*(\\d+.*?)");
static {
((Log4JLogger)FSNamesystem.auditLog).getLogger().setLevel(Level.WARN);
}
/**
* This connects to datanode and fetches block verification data.
* It repeats this until the given block has a verification time > newTime.
@ -206,12 +215,12 @@ public class TestDatanodeBlockScanner {
assertTrue(MiniDFSCluster.corruptReplica(1, block));
assertTrue(MiniDFSCluster.corruptReplica(2, block));
// Read the file to trigger reportBadBlocks by client
try {
IOUtils.copyBytes(fs.open(file1), new IOUtils.NullOutputStream(),
conf, true);
} catch (IOException e) {
// Ignore exception
// Trigger each of the DNs to scan this block immediately.
// The block pool scanner doesn't run frequently enough on its own
// to notice these, and due to HDFS-1371, the client won't report
// bad blocks to the NN when all replicas are bad.
for (DataNode dn : cluster.getDataNodes()) {
DataNodeTestUtils.runBlockScannerForBlock(dn, block);
}
// We now have the blocks to be marked as corrupt and we get back all

6
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/DataNodeTestUtils.java
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@ -114,6 +114,12 @@ public class DataNodeTestUtils {
dn.getDnConf().socketTimeout, dn.getDnConf().connectToDnViaHostname);
}
public static void runBlockScannerForBlock(DataNode dn, ExtendedBlock b) {
DataBlockScanner scanner = dn.getBlockScanner();
BlockPoolSliceScanner bpScanner = scanner.getBPScanner(b.getBlockPoolId());
bpScanner.verifyBlock(b);
}
public static void shutdownBlockScanner(DataNode dn) {
if (dn.blockScanner != null) {
dn.blockScanner.shutdown();