HDFS-7768. Change fsck to support EC files. Contributed by Takanobu Asanuma
This commit is contained in:
Tsz-Wo Nicholas Sze
Zhe Zhang
parent
4ae32abdf4
commit
0ed92e5b13
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@ -253,3 +253,5 @@
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HDFS-8441. Erasure Coding: make condition check earlier for setReplication.
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(waltersu4549)
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HDFS-7768. Change fsck to support EC files. (Takanobu Asanuma via szetszwo)
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@ -74,6 +74,7 @@
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants;
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import org.apache.hadoop.hdfs.server.datanode.CachingStrategy;
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import org.apache.hadoop.hdfs.util.LightWeightLinkedSet;
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import org.apache.hadoop.io.erasurecode.ECSchema;
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import org.apache.hadoop.net.NetUtils;
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import org.apache.hadoop.net.NetworkTopology;
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import org.apache.hadoop.net.NodeBase;
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@ -123,6 +124,9 @@ public class NamenodeFsck implements DataEncryptionKeyFactory {
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private final int totalDatanodes;
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private final InetAddress remoteAddress;
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private long totalDirs = 0L;
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private long totalSymlinks = 0L;
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private String lostFound = null;
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private boolean lfInited = false;
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private boolean lfInitedOk = false;
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@ -356,13 +360,21 @@ public void fsck() {
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namenode.getNamesystem().getBlockManager().getStoragePolicies());
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}
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Result res = new Result(conf);
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Result replRes = new ReplicationResult(conf);
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Result ecRes = new ErasureCodingResult(conf);
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check(path, file, res);
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check(path, file, replRes, ecRes);
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out.println(res);
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out.println(" Number of data-nodes:\t\t" + totalDatanodes);
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out.print("\nStatus: ");
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out.println(replRes.isHealthy() && ecRes.isHealthy() ? "HEALTHY" : "CORRUPT");
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out.println(" Number of data-nodes:\t" + totalDatanodes);
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out.println(" Number of racks:\t\t" + networktopology.getNumOfRacks());
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out.println(" Total dirs:\t\t\t" + totalDirs);
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out.println(" Total symlinks:\t\t" + totalSymlinks);
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out.println("\nReplicated Blocks:");
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out.println(replRes);
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out.println("\nErasure Coded Block Groups:");
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out.println(ecRes);
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if (this.showStoragePolcies) {
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out.print(storageTypeSummary.toString());
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@ -382,7 +394,7 @@ public void fsck() {
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// of file system and return appropriate code. Changing the output
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// string might break testcases. Also note this must be the last line
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// of the report.
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if (res.isHealthy()) {
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if (replRes.isHealthy() && ecRes.isHealthy()) {
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out.print("\n\nThe filesystem under path '" + path + "' " + HEALTHY_STATUS);
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} else {
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out.print("\n\nThe filesystem under path '" + path + "' " + CORRUPT_STATUS);
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@ -425,42 +437,49 @@ private void listCorruptFileBlocks() throws IOException {
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}
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@VisibleForTesting
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void check(String parent, HdfsFileStatus file, Result res) throws IOException {
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void check(String parent, HdfsFileStatus file, Result replRes, Result ecRes)
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throws IOException {
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String path = file.getFullName(parent);
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if (file.isDir()) {
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checkDir(path, res);
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checkDir(path, replRes, ecRes);
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return;
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}
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if (file.isSymlink()) {
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if (showFiles) {
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out.println(path + " <symlink>");
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}
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res.totalSymlinks++;
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totalSymlinks++;
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return;
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}
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LocatedBlocks blocks = getBlockLocations(path, file);
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if (blocks == null) { // the file is deleted
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return;
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}
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collectFileSummary(path, file, res, blocks);
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collectBlocksSummary(parent, file, res, blocks);
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final Result r = file.getReplication() == 0? ecRes: replRes;
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collectFileSummary(path, file, r, blocks);
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if (showprogress && (replRes.totalFiles + ecRes.totalFiles) % 100 == 0) {
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out.println();
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out.flush();
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}
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collectBlocksSummary(parent, file, r, blocks);
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}
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private void checkDir(String path, Result res) throws IOException {
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private void checkDir(String path, Result replRes, Result ecRes) throws IOException {
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if (snapshottableDirs != null && snapshottableDirs.contains(path)) {
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String snapshotPath = (path.endsWith(Path.SEPARATOR) ? path : path
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+ Path.SEPARATOR)
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+ HdfsConstants.DOT_SNAPSHOT_DIR;
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HdfsFileStatus snapshotFileInfo = namenode.getRpcServer().getFileInfo(
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snapshotPath);
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check(snapshotPath, snapshotFileInfo, res);
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check(snapshotPath, snapshotFileInfo, replRes, ecRes);
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}
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byte[] lastReturnedName = HdfsFileStatus.EMPTY_NAME;
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DirectoryListing thisListing;
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if (showFiles) {
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out.println(path + " <dir>");
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}
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res.totalDirs++;
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totalDirs++;
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do {
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assert lastReturnedName != null;
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thisListing = namenode.getRpcServer().getListing(
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@ -470,7 +489,7 @@ private void checkDir(String path, Result res) throws IOException {
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}
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HdfsFileStatus[] files = thisListing.getPartialListing();
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for (int i = 0; i < files.length; i++) {
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check(path, files[i], res);
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check(path, files[i], replRes, ecRes);
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}
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lastReturnedName = thisListing.getLastName();
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} while (thisListing.hasMore());
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@ -517,10 +536,6 @@ private void collectFileSummary(String path, HdfsFileStatus file, Result res,
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} else if (showprogress) {
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out.print('.');
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}
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if ((showprogress) && res.totalFiles % 100 == 0) {
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out.println();
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out.flush();
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}
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}
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private void collectBlocksSummary(String parent, HdfsFileStatus file, Result res,
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@ -543,7 +558,7 @@ private void collectBlocksSummary(String parent, HdfsFileStatus file, Result res
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block.getLocalBlock());
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// count decommissionedReplicas / decommissioningReplicas
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NumberReplicas numberReplicas = bm.countNodes(storedBlock);
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int decommissionedReplicas = numberReplicas.decommissioned();;
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int decommissionedReplicas = numberReplicas.decommissioned();
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int decommissioningReplicas = numberReplicas.decommissioning();
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res.decommissionedReplicas += decommissionedReplicas;
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res.decommissioningReplicas += decommissioningReplicas;
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@ -555,7 +570,15 @@ private void collectBlocksSummary(String parent, HdfsFileStatus file, Result res
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res.totalReplicas += totalReplicasPerBlock;
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// count expected replicas
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short targetFileReplication = file.getReplication();
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short targetFileReplication;
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if(file.getReplication() == 0) {
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INode inode = namenode.getNamesystem().getFSDirectory().getINode(path);
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INodesInPath iip = INodesInPath.fromINode(inode);
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ECSchema ecSchema = namenode.getNamesystem().getFSDirectory().getECSchema(iip);
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targetFileReplication = (short) (ecSchema.getNumDataUnits() + ecSchema.getNumParityUnits());
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} else {
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targetFileReplication = file.getReplication();
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}
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res.numExpectedReplicas += targetFileReplication;
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// count under min repl'd blocks
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@ -981,7 +1004,7 @@ static class Result {
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long missingReplicas = 0L;
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long decommissionedReplicas = 0L;
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long decommissioningReplicas = 0L;
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long numUnderMinReplicatedBlocks=0L;
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long numUnderMinReplicatedBlocks = 0L;
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long numOverReplicatedBlocks = 0L;
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long numUnderReplicatedBlocks = 0L;
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long numMisReplicatedBlocks = 0L; // blocks that do not satisfy block placement policy
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@ -991,20 +1014,14 @@ static class Result {
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long totalOpenFilesBlocks = 0L;
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long totalFiles = 0L;
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long totalOpenFiles = 0L;
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long totalDirs = 0L;
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long totalSymlinks = 0L;
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long totalSize = 0L;
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long totalOpenFilesSize = 0L;
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long totalReplicas = 0L;
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final short replication;
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final int minReplication;
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Result(Configuration conf) {
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this.replication = (short)conf.getInt(DFSConfigKeys.DFS_REPLICATION_KEY,
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DFSConfigKeys.DFS_REPLICATION_DEFAULT);
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this.minReplication = (short)conf.getInt(DFSConfigKeys.DFS_NAMENODE_REPLICATION_MIN_KEY,
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DFSConfigKeys.DFS_NAMENODE_REPLICATION_MIN_DEFAULT);
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Result(int minReplication) {
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this.minReplication = minReplication;
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}
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/**
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@ -1032,19 +1049,28 @@ float getReplicationFactor() {
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return 0.0f;
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return (float) (totalReplicas) / (float) totalBlocks;
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}
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}
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@VisibleForTesting
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static class ReplicationResult extends Result {
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final short replication;
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ReplicationResult(Configuration conf) {
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super(conf.getInt(DFSConfigKeys.DFS_NAMENODE_REPLICATION_MIN_KEY,
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DFSConfigKeys.DFS_NAMENODE_REPLICATION_MIN_DEFAULT));
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this.replication = (short)conf.getInt(DFSConfigKeys.DFS_REPLICATION_KEY,
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DFSConfigKeys.DFS_REPLICATION_DEFAULT);
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}
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@Override
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public String toString() {
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StringBuilder res = new StringBuilder();
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res.append("Status: ").append((isHealthy() ? "HEALTHY" : "CORRUPT"))
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.append("\n Total size:\t").append(totalSize).append(" B");
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res.append(" Total size:\t").append(totalSize).append(" B");
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if (totalOpenFilesSize != 0) {
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res.append(" (Total open files size: ").append(totalOpenFilesSize)
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.append(" B)");
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}
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res.append("\n Total dirs:\t").append(totalDirs).append(
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"\n Total files:\t").append(totalFiles);
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res.append("\n Total symlinks:\t\t").append(totalSymlinks);
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res.append("\n Total files:\t").append(totalFiles);
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if (totalOpenFiles != 0) {
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res.append(" (Files currently being written: ").append(totalOpenFiles)
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.append(")");
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@ -1134,4 +1160,116 @@ public String toString() {
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return res.toString();
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}
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}
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@VisibleForTesting
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static class ErasureCodingResult extends Result {
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final String ecSchema;
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ErasureCodingResult(Configuration conf) {
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this(ErasureCodingSchemaManager.getSystemDefaultSchema());
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}
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ErasureCodingResult(ECSchema ecSchema) {
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super(ecSchema.getNumDataUnits());
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this.ecSchema = ecSchema.getSchemaName();
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}
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@Override
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public String toString() {
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StringBuilder res = new StringBuilder();
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res.append(" Total size:\t").append(totalSize).append(" B");
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if (totalOpenFilesSize != 0) {
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res.append(" (Total open files size: ").append(totalOpenFilesSize)
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.append(" B)");
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}
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res.append("\n Total files:\t").append(totalFiles);
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if (totalOpenFiles != 0) {
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res.append(" (Files currently being written: ").append(totalOpenFiles)
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.append(")");
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}
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res.append("\n Total block groups (validated):\t").append(totalBlocks);
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if (totalBlocks > 0) {
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res.append(" (avg. block group size ").append((totalSize / totalBlocks))
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.append(" B)");
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}
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if (totalOpenFilesBlocks != 0) {
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res.append(" (Total open file block groups (not validated): ").append(
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totalOpenFilesBlocks).append(")");
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}
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if (corruptFiles > 0 || numUnderMinReplicatedBlocks > 0) {
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res.append("\n ********************************");
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if(numUnderMinReplicatedBlocks>0){
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res.append("\n UNRECOVERABLE BLOCK GROUPS:\t").append(numUnderMinReplicatedBlocks);
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if(totalBlocks>0){
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res.append(" (").append(
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((float) (numUnderMinReplicatedBlocks * 100) / (float) totalBlocks))
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.append(" %)");
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}
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res.append("\n ").append("MIN REQUIRED EC BLOCK:\t")
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.append(minReplication);
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}
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if(corruptFiles>0) {
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res.append(
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"\n CORRUPT FILES:\t").append(corruptFiles);
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if (missingSize > 0) {
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res.append("\n MISSING BLOCK GROUPS:\t").append(missingIds.size()).append(
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"\n MISSING SIZE:\t\t").append(missingSize).append(" B");
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}
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if (corruptBlocks > 0) {
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res.append("\n CORRUPT BLOCK GROUPS: \t").append(corruptBlocks).append(
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"\n CORRUPT SIZE:\t\t").append(corruptSize).append(" B");
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}
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}
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res.append("\n ********************************");
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}
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res.append("\n Minimally erasure-coded block groups:\t").append(
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numMinReplicatedBlocks);
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if (totalBlocks > 0) {
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res.append(" (").append(
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((float) (numMinReplicatedBlocks * 100) / (float) totalBlocks))
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.append(" %)");
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}
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res.append("\n Over-erasure-coded block groups:\t")
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.append(numOverReplicatedBlocks);
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if (totalBlocks > 0) {
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res.append(" (").append(
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((float) (numOverReplicatedBlocks * 100) / (float) totalBlocks))
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.append(" %)");
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}
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res.append("\n Under-erasure-coded block groups:\t").append(
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numUnderReplicatedBlocks);
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if (totalBlocks > 0) {
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res.append(" (").append(
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((float) (numUnderReplicatedBlocks * 100) / (float) totalBlocks))
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.append(" %)");
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}
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res.append("\n Unsatisfactory placement block groups:\t\t")
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.append(numMisReplicatedBlocks);
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if (totalBlocks > 0) {
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res.append(" (").append(
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((float) (numMisReplicatedBlocks * 100) / (float) totalBlocks))
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.append(" %)");
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}
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res.append("\n Default schema:\t").append(ecSchema)
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.append("\n Average block group size:\t").append(
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getReplicationFactor()).append("\n Missing block groups:\t\t").append(
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missingIds.size()).append("\n Corrupt block groups:\t\t").append(
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corruptBlocks).append("\n Missing ec-blocks:\t\t").append(
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missingReplicas);
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if (totalReplicas > 0) {
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res.append(" (").append(
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((float) (missingReplicas * 100) / (float) numExpectedReplicas)).append(
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" %)");
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}
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if (decommissionedReplicas > 0) {
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res.append("\n Decommissioned ec-blocks:\t").append(
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decommissionedReplicas);
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}
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if (decommissioningReplicas > 0) {
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res.append("\n Decommissioning ec-blocks:\t").append(
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decommissioningReplicas);
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}
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return res.toString();
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}
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}
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}
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@ -84,6 +84,8 @@
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeDescriptor;
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager;
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import org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.Result;
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import org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.ReplicationResult;
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import org.apache.hadoop.hdfs.server.namenode.NamenodeFsck.ErasureCodingResult;
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import org.apache.hadoop.hdfs.server.protocol.NamenodeProtocols;
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import org.apache.hadoop.hdfs.tools.DFSck;
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import org.apache.hadoop.io.IOUtils;
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@ -1058,13 +1060,14 @@ public void testFsckMissingReplicas() throws IOException {
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final HdfsFileStatus file =
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namenode.getRpcServer().getFileInfo(pathString);
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assertNotNull(file);
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Result res = new Result(conf);
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fsck.check(pathString, file, res);
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Result replRes = new ReplicationResult(conf);
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Result ecRes = new ErasureCodingResult(conf);
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fsck.check(pathString, file, replRes, ecRes);
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// Also print the output from the fsck, for ex post facto sanity checks
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System.out.println(result.toString());
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assertEquals(res.missingReplicas,
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assertEquals(replRes.missingReplicas,
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(NUM_BLOCKS*REPL_FACTOR) - (NUM_BLOCKS*NUM_REPLICAS));
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assertEquals(res.numExpectedReplicas, NUM_BLOCKS*REPL_FACTOR);
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assertEquals(replRes.numExpectedReplicas, NUM_BLOCKS*REPL_FACTOR);
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} finally {
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if(dfs != null) {
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dfs.close();
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@ -1135,10 +1138,11 @@ public void testFsckMisPlacedReplicas() throws IOException {
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final HdfsFileStatus file =
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namenode.getRpcServer().getFileInfo(pathString);
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assertNotNull(file);
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Result res = new Result(conf);
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fsck.check(pathString, file, res);
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Result replRes = new ReplicationResult(conf);
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Result ecRes = new ErasureCodingResult(conf);
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fsck.check(pathString, file, replRes, ecRes);
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// check misReplicatedBlock number.
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assertEquals(res.numMisReplicatedBlocks, NUM_BLOCKS);
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assertEquals(replRes.numMisReplicatedBlocks, NUM_BLOCKS);
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} finally {
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if(dfs != null) {
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dfs.close();
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@ -1199,14 +1203,15 @@ public void testFsckFileNotFound() throws Exception {
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HdfsFileStatus file = new HdfsFileStatus(length, isDir, blockReplication,
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blockSize, modTime, accessTime, perms, owner, group, symlink,
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path, fileId, numChildren, null, storagePolicy, null, 0);
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Result res = new Result(conf);
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Result replRes = new ReplicationResult(conf);
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Result ecRes = new ErasureCodingResult(conf);
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try {
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fsck.check(pathString, file, res);
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fsck.check(pathString, file, replRes, ecRes);
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} catch (Exception e) {
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fail("Unexpected exception "+ e.getMessage());
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}
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assertTrue(res.toString().contains("HEALTHY"));
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assertTrue(replRes.isHealthy());
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}
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/** Test fsck with symlinks in the filesystem */
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@ -1629,4 +1634,52 @@ public void testFsckWithDecommissionedReplicas() throws Exception {
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}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testECFsck() throws Exception {
|
||||
MiniDFSCluster cluster = null;
|
||||
FileSystem fs = null;
|
||||
try {
|
||||
Configuration conf = new HdfsConfiguration();
|
||||
final long precision = 1L;
|
||||
conf.setLong(DFSConfigKeys.DFS_NAMENODE_ACCESSTIME_PRECISION_KEY, precision);
|
||||
conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 10000L);
|
||||
int totalSize = ErasureCodingSchemaManager.getSystemDefaultSchema().getNumDataUnits()
|
||||
+ ErasureCodingSchemaManager.getSystemDefaultSchema().getNumParityUnits();
|
||||
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(totalSize).build();
|
||||
fs = cluster.getFileSystem();
|
||||
Path replDirPath = new Path("/replicated");
|
||||
Path replFilePath = new Path(replDirPath, "replfile");
|
||||
final short factor = 3;
|
||||
DFSTestUtil.createFile(fs, replFilePath, 1024, factor, 0);
|
||||
DFSTestUtil.waitReplication(fs, replFilePath, factor);
|
||||
Path ecDirPath = new Path("/striped");
|
||||
Path ecFilePath = new Path(ecDirPath, "ecfile");
|
||||
final int numBlocks = 4;
|
||||
DFSTestUtil.createStripedFile(cluster, ecFilePath, ecDirPath, numBlocks, 2, true);
|
||||
long replTime = fs.getFileStatus(replFilePath).getAccessTime();
|
||||
long ecTime = fs.getFileStatus(ecFilePath).getAccessTime();
|
||||
Thread.sleep(precision);
|
||||
setupAuditLogs();
|
||||
String outStr = runFsck(conf, 0, true, "/");
|
||||
verifyAuditLogs();
|
||||
assertEquals(replTime, fs.getFileStatus(replFilePath).getAccessTime());
|
||||
assertEquals(ecTime, fs.getFileStatus(ecFilePath).getAccessTime());
|
||||
System.out.println(outStr);
|
||||
assertTrue(outStr.contains(NamenodeFsck.HEALTHY_STATUS));
|
||||
if (fs != null) {try{fs.close();} catch(Exception e){}}
|
||||
cluster.shutdown();
|
||||
|
||||
// restart the cluster; bring up namenode but not the data nodes
|
||||
cluster = new MiniDFSCluster.Builder(conf)
|
||||
.numDataNodes(0).format(false).build();
|
||||
outStr = runFsck(conf, 1, true, "/");
|
||||
// expect the result is corrupt
|
||||
assertTrue(outStr.contains(NamenodeFsck.CORRUPT_STATUS));
|
||||
System.out.println(outStr);
|
||||
} finally {
|
||||
if (fs != null) {try{fs.close();} catch(Exception e){}}
|
||||
if (cluster != null) { cluster.shutdown(); }
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue