HDFS-9694. Make existing DFSClient#getFileChecksum() work for striped blocks. Contributed by Kai Zheng
This commit is contained in:
parent
fde8ac5d85
commit
e5ff0ea7ba
|
@ -8,6 +8,7 @@
|
|||
<Class name="org.apache.hadoop.hdfs.protocol.LocatedBlock"/>
|
||||
<Class name="org.apache.hadoop.hdfs.protocol.BlockStoragePolicy"/>
|
||||
<Class name="org.apache.hadoop.hdfs.protocol.CorruptFileBlocks"/>
|
||||
<Class name="org.apache.hadoop.hdfs.protocol.StripedBlockInfo"/>
|
||||
<Class name="org.apache.hadoop.hdfs.protocol.DirectoryListing"/>
|
||||
<Class name="org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier"/>
|
||||
<Class name="org.apache.hadoop.hdfs.security.token.block.DataEncryptionKey"/>
|
||||
|
|
|
@ -1704,7 +1704,10 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
|
|||
|
||||
/**
|
||||
* Get the checksum of the whole file or a range of the file. Note that the
|
||||
* range always starts from the beginning of the file.
|
||||
* range always starts from the beginning of the file. The file can be
|
||||
* in replicated form, or striped mode. It can be used to checksum and compare
|
||||
* two replicated files, or two striped files, but not applicable for two
|
||||
* files of different block layout forms.
|
||||
* @param src The file path
|
||||
* @param length the length of the range, i.e., the range is [0, length]
|
||||
* @return The checksum
|
||||
|
@ -1717,7 +1720,11 @@ public class DFSClient implements java.io.Closeable, RemotePeerFactory,
|
|||
|
||||
LocatedBlocks blockLocations = getBlockLocations(src, length);
|
||||
|
||||
FileChecksumHelper.FileChecksumComputer maker =
|
||||
FileChecksumHelper.FileChecksumComputer maker;
|
||||
ErasureCodingPolicy ecPolicy = blockLocations.getErasureCodingPolicy();
|
||||
maker = ecPolicy != null ?
|
||||
new FileChecksumHelper.StripedFileNonStripedChecksumComputer(src,
|
||||
length, blockLocations, namenode, this, ecPolicy) :
|
||||
new FileChecksumHelper.ReplicatedFileChecksumComputer(src, length,
|
||||
blockLocations, namenode, this);
|
||||
|
||||
|
|
|
@ -22,10 +22,13 @@ import org.apache.hadoop.fs.MD5MD5CRC32FileChecksum;
|
|||
import org.apache.hadoop.fs.MD5MD5CRC32GzipFileChecksum;
|
||||
import org.apache.hadoop.hdfs.protocol.ClientProtocol;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedBlocks;
|
||||
import org.apache.hadoop.hdfs.protocol.LocatedStripedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.Op;
|
||||
|
@ -75,7 +78,7 @@ final class FileChecksumHelper {
|
|||
private int bytesPerCRC = -1;
|
||||
private DataChecksum.Type crcType = DataChecksum.Type.DEFAULT;
|
||||
private long crcPerBlock = 0;
|
||||
private boolean refetchBlocks = false;
|
||||
private boolean isRefetchBlocks = false;
|
||||
private int lastRetriedIndex = -1;
|
||||
|
||||
/**
|
||||
|
@ -127,8 +130,11 @@ final class FileChecksumHelper {
|
|||
return blockLocations;
|
||||
}
|
||||
|
||||
void setBlockLocations(LocatedBlocks blockLocations) {
|
||||
this.blockLocations = blockLocations;
|
||||
void refetchBlocks() throws IOException {
|
||||
this.blockLocations = getClient().getBlockLocations(getSrc(),
|
||||
getLength());
|
||||
this.locatedBlocks = getBlockLocations().getLocatedBlocks();
|
||||
this.isRefetchBlocks = false;
|
||||
}
|
||||
|
||||
int getTimeout() {
|
||||
|
@ -143,10 +149,6 @@ final class FileChecksumHelper {
|
|||
return locatedBlocks;
|
||||
}
|
||||
|
||||
void setLocatedBlocks(List<LocatedBlock> locatedBlocks) {
|
||||
this.locatedBlocks = locatedBlocks;
|
||||
}
|
||||
|
||||
long getRemaining() {
|
||||
return remaining;
|
||||
}
|
||||
|
@ -180,11 +182,11 @@ final class FileChecksumHelper {
|
|||
}
|
||||
|
||||
boolean isRefetchBlocks() {
|
||||
return refetchBlocks;
|
||||
return isRefetchBlocks;
|
||||
}
|
||||
|
||||
void setRefetchBlocks(boolean refetchBlocks) {
|
||||
this.refetchBlocks = refetchBlocks;
|
||||
this.isRefetchBlocks = refetchBlocks;
|
||||
}
|
||||
|
||||
int getLastRetriedIndex() {
|
||||
|
@ -278,10 +280,7 @@ final class FileChecksumHelper {
|
|||
blockIdx < getLocatedBlocks().size() && getRemaining() >= 0;
|
||||
blockIdx++) {
|
||||
if (isRefetchBlocks()) { // refetch to get fresh tokens
|
||||
setBlockLocations(getClient().getBlockLocations(getSrc(),
|
||||
getLength()));
|
||||
setLocatedBlocks(getBlockLocations().getLocatedBlocks());
|
||||
setRefetchBlocks(false);
|
||||
refetchBlocks();
|
||||
}
|
||||
|
||||
LocatedBlock locatedBlock = getLocatedBlocks().get(blockIdx);
|
||||
|
@ -380,15 +379,13 @@ final class FileChecksumHelper {
|
|||
}
|
||||
|
||||
//read md5
|
||||
final MD5Hash md5 = new MD5Hash(
|
||||
checksumData.getMd5().toByteArray());
|
||||
final MD5Hash md5 = new MD5Hash(checksumData.getMd5().toByteArray());
|
||||
md5.write(getMd5out());
|
||||
|
||||
// read crc-type
|
||||
final DataChecksum.Type ct;
|
||||
if (checksumData.hasCrcType()) {
|
||||
ct = PBHelperClient.convert(checksumData
|
||||
.getCrcType());
|
||||
ct = PBHelperClient.convert(checksumData.getCrcType());
|
||||
} else {
|
||||
LOG.debug("Retrieving checksum from an earlier-version DataNode: " +
|
||||
"inferring checksum by reading first byte");
|
||||
|
@ -413,4 +410,160 @@ final class FileChecksumHelper {
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Striped file checksum computing.
|
||||
*/
|
||||
static class StripedFileNonStripedChecksumComputer
|
||||
extends FileChecksumComputer {
|
||||
private final ErasureCodingPolicy ecPolicy;
|
||||
private int bgIdx;
|
||||
|
||||
StripedFileNonStripedChecksumComputer(String src, long length,
|
||||
LocatedBlocks blockLocations,
|
||||
ClientProtocol namenode,
|
||||
DFSClient client,
|
||||
ErasureCodingPolicy ecPolicy)
|
||||
throws IOException {
|
||||
super(src, length, blockLocations, namenode, client);
|
||||
|
||||
this.ecPolicy = ecPolicy;
|
||||
}
|
||||
|
||||
@Override
|
||||
void checksumBlocks() throws IOException {
|
||||
int tmpTimeout = 3000 * 1 + getClient().getConf().getSocketTimeout();
|
||||
setTimeout(tmpTimeout);
|
||||
|
||||
for (bgIdx = 0;
|
||||
bgIdx < getLocatedBlocks().size() && getRemaining() >= 0; bgIdx++) {
|
||||
if (isRefetchBlocks()) { // refetch to get fresh tokens
|
||||
refetchBlocks();
|
||||
}
|
||||
|
||||
LocatedBlock locatedBlock = getLocatedBlocks().get(bgIdx);
|
||||
LocatedStripedBlock blockGroup = (LocatedStripedBlock) locatedBlock;
|
||||
|
||||
if (!checksumBlockGroup(blockGroup)) {
|
||||
throw new IOException("Fail to get block MD5 for " + locatedBlock);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
private boolean checksumBlockGroup(
|
||||
LocatedStripedBlock blockGroup) throws IOException {
|
||||
ExtendedBlock block = blockGroup.getBlock();
|
||||
if (getRemaining() < block.getNumBytes()) {
|
||||
block.setNumBytes(getRemaining());
|
||||
}
|
||||
setRemaining(getRemaining() - block.getNumBytes());
|
||||
|
||||
StripedBlockInfo stripedBlockInfo = new StripedBlockInfo(block,
|
||||
blockGroup.getLocations(), blockGroup.getBlockTokens(), ecPolicy);
|
||||
DatanodeInfo[] datanodes = blockGroup.getLocations();
|
||||
|
||||
//try each datanode in the block group.
|
||||
boolean done = false;
|
||||
for (int j = 0; !done && j < datanodes.length; j++) {
|
||||
try {
|
||||
tryDatanode(blockGroup, stripedBlockInfo, datanodes[j]);
|
||||
done = true;
|
||||
} catch (InvalidBlockTokenException ibte) {
|
||||
if (bgIdx > getLastRetriedIndex()) {
|
||||
LOG.debug("Got access token error in response to OP_BLOCK_CHECKSUM "
|
||||
+ "for file {} for block {} from datanode {}. Will retry "
|
||||
+ "the block once.",
|
||||
getSrc(), block, datanodes[j]);
|
||||
setLastRetriedIndex(bgIdx);
|
||||
done = true; // actually it's not done; but we'll retry
|
||||
bgIdx--; // repeat at bgIdx-th block
|
||||
setRefetchBlocks(true);
|
||||
}
|
||||
} catch (IOException ie) {
|
||||
LOG.warn("src={}" + ", datanodes[{}]={}",
|
||||
getSrc(), j, datanodes[j], ie);
|
||||
}
|
||||
}
|
||||
|
||||
return done;
|
||||
}
|
||||
|
||||
/**
|
||||
* Return true when sounds good to continue or retry, false when severe
|
||||
* condition or totally failed.
|
||||
*/
|
||||
private void tryDatanode(LocatedStripedBlock blockGroup,
|
||||
StripedBlockInfo stripedBlockInfo,
|
||||
DatanodeInfo datanode) throws IOException {
|
||||
|
||||
try (IOStreamPair pair = getClient().connectToDN(datanode,
|
||||
getTimeout(), blockGroup.getBlockToken())) {
|
||||
|
||||
LOG.debug("write to {}: {}, blockGroup={}",
|
||||
datanode, Op.BLOCK_GROUP_CHECKSUM, blockGroup);
|
||||
|
||||
// get block MD5
|
||||
createSender(pair).blockGroupChecksum(stripedBlockInfo,
|
||||
blockGroup.getBlockToken());
|
||||
|
||||
BlockOpResponseProto reply = BlockOpResponseProto.parseFrom(
|
||||
PBHelperClient.vintPrefixed(pair.in));
|
||||
|
||||
String logInfo = "for blockGroup " + blockGroup +
|
||||
" from datanode " + datanode;
|
||||
DataTransferProtoUtil.checkBlockOpStatus(reply, logInfo);
|
||||
|
||||
OpBlockChecksumResponseProto checksumData = reply.getChecksumResponse();
|
||||
|
||||
//read byte-per-checksum
|
||||
final int bpc = checksumData.getBytesPerCrc();
|
||||
if (bgIdx == 0) { //first block
|
||||
setBytesPerCRC(bpc);
|
||||
} else {
|
||||
if (bpc != getBytesPerCRC()) {
|
||||
throw new IOException("Byte-per-checksum not matched: bpc=" + bpc
|
||||
+ " but bytesPerCRC=" + getBytesPerCRC());
|
||||
}
|
||||
}
|
||||
|
||||
//read crc-per-block
|
||||
final long cpb = checksumData.getCrcPerBlock();
|
||||
if (getLocatedBlocks().size() > 1 && bgIdx == 0) { // first block
|
||||
setCrcPerBlock(cpb);
|
||||
}
|
||||
|
||||
//read md5
|
||||
final MD5Hash md5 = new MD5Hash(
|
||||
checksumData.getMd5().toByteArray());
|
||||
md5.write(getMd5out());
|
||||
|
||||
// read crc-type
|
||||
final DataChecksum.Type ct;
|
||||
if (checksumData.hasCrcType()) {
|
||||
ct = PBHelperClient.convert(checksumData.getCrcType());
|
||||
} else {
|
||||
LOG.debug("Retrieving checksum from an earlier-version DataNode: " +
|
||||
"inferring checksum by reading first byte");
|
||||
ct = getClient().inferChecksumTypeByReading(blockGroup, datanode);
|
||||
}
|
||||
|
||||
if (bgIdx == 0) {
|
||||
setCrcType(ct);
|
||||
} else if (getCrcType() != DataChecksum.Type.MIXED &&
|
||||
getCrcType() != ct) {
|
||||
// if crc types are mixed in a file
|
||||
setCrcType(DataChecksum.Type.MIXED);
|
||||
}
|
||||
|
||||
if (LOG.isDebugEnabled()) {
|
||||
if (bgIdx == 0) {
|
||||
LOG.debug("set bytesPerCRC=" + getBytesPerCRC()
|
||||
+ ", crcPerBlock=" + getCrcPerBlock());
|
||||
}
|
||||
LOG.debug("got reply from " + datanode + ": md5=" + md5);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -24,6 +24,7 @@ import org.apache.hadoop.classification.InterfaceStability;
|
|||
import org.apache.hadoop.fs.StorageType;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.server.datanode.CachingStrategy;
|
||||
import org.apache.hadoop.hdfs.shortcircuit.ShortCircuitShm.SlotId;
|
||||
|
@ -197,6 +198,17 @@ public interface DataTransferProtocol {
|
|||
* @param blockToken security token for accessing the block.
|
||||
* @throws IOException
|
||||
*/
|
||||
void blockChecksum(final ExtendedBlock blk,
|
||||
final Token<BlockTokenIdentifier> blockToken) throws IOException;
|
||||
void blockChecksum(ExtendedBlock blk,
|
||||
Token<BlockTokenIdentifier> blockToken) throws IOException;
|
||||
|
||||
|
||||
/**
|
||||
* Get striped block group checksum (MD5 of CRC32).
|
||||
*
|
||||
* @param stripedBlockInfo a striped block info.
|
||||
* @param blockToken security token for accessing the block.
|
||||
* @throws IOException
|
||||
*/
|
||||
void blockGroupChecksum(StripedBlockInfo stripedBlockInfo,
|
||||
Token<BlockTokenIdentifier> blockToken) throws IOException;
|
||||
}
|
||||
|
|
|
@ -38,6 +38,7 @@ public enum Op {
|
|||
REQUEST_SHORT_CIRCUIT_FDS((byte)87),
|
||||
RELEASE_SHORT_CIRCUIT_FDS((byte)88),
|
||||
REQUEST_SHORT_CIRCUIT_SHM((byte)89),
|
||||
BLOCK_GROUP_CHECKSUM((byte)90),
|
||||
CUSTOM((byte)127);
|
||||
|
||||
/** The code for this operation. */
|
||||
|
|
|
@ -28,11 +28,13 @@ import org.apache.hadoop.classification.InterfaceStability;
|
|||
import org.apache.hadoop.fs.StorageType;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.CachingStrategyProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ChecksumProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ClientOperationHeaderProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferTraceInfoProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockChecksumProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockGroupChecksumProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReadBlockProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReplaceBlockProto;
|
||||
|
@ -261,4 +263,21 @@ public class Sender implements DataTransferProtocol {
|
|||
|
||||
send(out, Op.BLOCK_CHECKSUM, proto);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void blockGroupChecksum(StripedBlockInfo stripedBlockInfo,
|
||||
Token<BlockTokenIdentifier> blockToken) throws IOException {
|
||||
OpBlockGroupChecksumProto proto = OpBlockGroupChecksumProto.newBuilder()
|
||||
.setHeader(DataTransferProtoUtil.buildBaseHeader(
|
||||
stripedBlockInfo.getBlock(), blockToken))
|
||||
.setDatanodes(PBHelperClient.convertToProto(
|
||||
stripedBlockInfo.getDatanodes()))
|
||||
.addAllBlockTokens(PBHelperClient.convert(
|
||||
stripedBlockInfo.getBlockTokens()))
|
||||
.setEcPolicy(PBHelperClient.convertErasureCodingPolicy(
|
||||
stripedBlockInfo.getErasureCodingPolicy()))
|
||||
.build();
|
||||
|
||||
send(out, Op.BLOCK_GROUP_CHECKSUM, proto);
|
||||
}
|
||||
}
|
||||
|
|
|
@ -553,10 +553,8 @@ public class PBHelperClient {
|
|||
proto.getCorrupt(),
|
||||
cachedLocs.toArray(new DatanodeInfo[cachedLocs.size()]));
|
||||
List<TokenProto> tokenProtos = proto.getBlockTokensList();
|
||||
Token<BlockTokenIdentifier>[] blockTokens = new Token[indices.length];
|
||||
for (int i = 0; i < indices.length; i++) {
|
||||
blockTokens[i] = convert(tokenProtos.get(i));
|
||||
}
|
||||
Token<BlockTokenIdentifier>[] blockTokens =
|
||||
convertTokens(tokenProtos);
|
||||
((LocatedStripedBlock) lb).setBlockTokens(blockTokens);
|
||||
}
|
||||
lb.setBlockToken(convert(proto.getBlockToken()));
|
||||
|
@ -564,6 +562,18 @@ public class PBHelperClient {
|
|||
return lb;
|
||||
}
|
||||
|
||||
static public Token<BlockTokenIdentifier>[] convertTokens(
|
||||
List<TokenProto> tokenProtos) {
|
||||
|
||||
@SuppressWarnings("unchecked")
|
||||
Token<BlockTokenIdentifier>[] blockTokens = new Token[tokenProtos.size()];
|
||||
for (int i = 0; i < blockTokens.length; i++) {
|
||||
blockTokens[i] = convert(tokenProtos.get(i));
|
||||
}
|
||||
|
||||
return blockTokens;
|
||||
}
|
||||
|
||||
static public DatanodeInfo convert(DatanodeInfoProto di) {
|
||||
if (di == null) return null;
|
||||
return new DatanodeInfo(
|
||||
|
@ -815,9 +825,7 @@ public class PBHelperClient {
|
|||
byte[] indices = sb.getBlockIndices();
|
||||
builder.setBlockIndices(PBHelperClient.getByteString(indices));
|
||||
Token<BlockTokenIdentifier>[] blockTokens = sb.getBlockTokens();
|
||||
for (int i = 0; i < indices.length; i++) {
|
||||
builder.addBlockTokens(PBHelperClient.convert(blockTokens[i]));
|
||||
}
|
||||
builder.addAllBlockTokens(convert(blockTokens));
|
||||
}
|
||||
|
||||
return builder.setB(PBHelperClient.convert(b.getBlock()))
|
||||
|
@ -825,6 +833,16 @@ public class PBHelperClient {
|
|||
.setCorrupt(b.isCorrupt()).setOffset(b.getStartOffset()).build();
|
||||
}
|
||||
|
||||
public static List<TokenProto> convert(
|
||||
Token<BlockTokenIdentifier>[] blockTokens) {
|
||||
List<TokenProto> results = new ArrayList<>(blockTokens.length);
|
||||
for (Token<BlockTokenIdentifier> bt : blockTokens) {
|
||||
results.add(convert(bt));
|
||||
}
|
||||
|
||||
return results;
|
||||
}
|
||||
|
||||
public static BlockStoragePolicy convert(BlockStoragePolicyProto proto) {
|
||||
List<StorageTypeProto> cList = proto.getCreationPolicy()
|
||||
.getStorageTypesList();
|
||||
|
@ -2500,4 +2518,14 @@ public class PBHelperClient {
|
|||
.setId(policy.getId());
|
||||
return builder.build();
|
||||
}
|
||||
|
||||
public static HdfsProtos.DatanodeInfosProto convertToProto(
|
||||
DatanodeInfo[] datanodeInfos) {
|
||||
HdfsProtos.DatanodeInfosProto.Builder builder =
|
||||
HdfsProtos.DatanodeInfosProto.newBuilder();
|
||||
for (DatanodeInfo datanodeInfo : datanodeInfos) {
|
||||
builder.addDatanodes(PBHelperClient.convert(datanodeInfo));
|
||||
}
|
||||
return builder.build();
|
||||
}
|
||||
}
|
||||
|
|
|
@ -75,6 +75,18 @@ public class StripedBlockUtil {
|
|||
|
||||
public static final Logger LOG = LoggerFactory.getLogger(StripedBlockUtil.class);
|
||||
|
||||
/**
|
||||
* Parses a striped block group into individual blocks.
|
||||
* @param bg The striped block group
|
||||
* @param ecPolicy The erasure coding policy
|
||||
* @return An array of the blocks in the group
|
||||
*/
|
||||
public static LocatedBlock[] parseStripedBlockGroup(LocatedStripedBlock bg,
|
||||
ErasureCodingPolicy ecPolicy) {
|
||||
return parseStripedBlockGroup(bg, ecPolicy.getCellSize(),
|
||||
ecPolicy.getNumDataUnits(), ecPolicy.getNumParityUnits());
|
||||
}
|
||||
|
||||
/**
|
||||
* This method parses a striped block group into individual blocks.
|
||||
*
|
||||
|
|
|
@ -74,7 +74,6 @@ message OpReadBlockProto {
|
|||
optional CachingStrategyProto cachingStrategy = 5;
|
||||
}
|
||||
|
||||
|
||||
message ChecksumProto {
|
||||
required ChecksumTypeProto type = 1;
|
||||
required uint32 bytesPerChecksum = 2;
|
||||
|
@ -149,6 +148,14 @@ message OpBlockChecksumProto {
|
|||
required BaseHeaderProto header = 1;
|
||||
}
|
||||
|
||||
message OpBlockGroupChecksumProto {
|
||||
required BaseHeaderProto header = 1;
|
||||
required DatanodeInfosProto datanodes = 2;
|
||||
// each internal block has a block token
|
||||
repeated hadoop.common.TokenProto blockTokens = 3;
|
||||
required ErasureCodingPolicyProto ecPolicy = 4;
|
||||
}
|
||||
|
||||
/**
|
||||
* An ID uniquely identifying a shared memory segment.
|
||||
*/
|
||||
|
|
|
@ -26,11 +26,13 @@ import java.io.IOException;
|
|||
import org.apache.hadoop.classification.InterfaceAudience;
|
||||
import org.apache.hadoop.classification.InterfaceStability;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BaseHeaderProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.CachingStrategyProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ClientOperationHeaderProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferTraceInfoProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockChecksumProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpBlockGroupChecksumProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpCopyBlockProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReadBlockProto;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpReplaceBlockProto;
|
||||
|
@ -111,6 +113,9 @@ public abstract class Receiver implements DataTransferProtocol {
|
|||
case BLOCK_CHECKSUM:
|
||||
opBlockChecksum(in);
|
||||
break;
|
||||
case BLOCK_GROUP_CHECKSUM:
|
||||
opStripedBlockChecksum(in);
|
||||
break;
|
||||
case TRANSFER_BLOCK:
|
||||
opTransferBlock(in);
|
||||
break;
|
||||
|
@ -290,4 +295,27 @@ public abstract class Receiver implements DataTransferProtocol {
|
|||
if (traceScope != null) traceScope.close();
|
||||
}
|
||||
}
|
||||
|
||||
/** Receive OP_STRIPED_BLOCK_CHECKSUM. */
|
||||
private void opStripedBlockChecksum(DataInputStream dis) throws IOException {
|
||||
OpBlockGroupChecksumProto proto =
|
||||
OpBlockGroupChecksumProto.parseFrom(vintPrefixed(dis));
|
||||
TraceScope traceScope = continueTraceSpan(proto.getHeader(),
|
||||
proto.getClass().getSimpleName());
|
||||
StripedBlockInfo stripedBlockInfo = new StripedBlockInfo(
|
||||
PBHelperClient.convert(proto.getHeader().getBlock()),
|
||||
PBHelperClient.convert(proto.getDatanodes()),
|
||||
PBHelperClient.convertTokens(proto.getBlockTokensList()),
|
||||
PBHelperClient.convertErasureCodingPolicy(proto.getEcPolicy())
|
||||
);
|
||||
|
||||
try {
|
||||
blockGroupChecksum(stripedBlockInfo,
|
||||
PBHelperClient.convert(proto.getHeader().getToken()));
|
||||
} finally {
|
||||
if (traceScope != null) {
|
||||
traceScope.close();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
@ -19,16 +19,30 @@ package org.apache.hadoop.hdfs.server.datanode;
|
|||
|
||||
import com.google.common.base.Preconditions;
|
||||
import org.apache.hadoop.hdfs.DFSUtilClient;
|
||||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.Op;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.Sender;
|
||||
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos;
|
||||
import org.apache.hadoop.hdfs.protocolPB.PBHelperClient;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.server.datanode.fsdataset.LengthInputStream;
|
||||
import org.apache.hadoop.hdfs.util.StripedBlockUtil;
|
||||
import org.apache.hadoop.io.DataOutputBuffer;
|
||||
import org.apache.hadoop.io.IOUtils;
|
||||
import org.apache.hadoop.io.MD5Hash;
|
||||
import org.apache.hadoop.security.token.Token;
|
||||
import org.apache.hadoop.util.DataChecksum;
|
||||
import org.slf4j.Logger;
|
||||
import org.slf4j.LoggerFactory;
|
||||
|
||||
import java.io.BufferedInputStream;
|
||||
import java.io.DataInputStream;
|
||||
import java.io.DataOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.security.MessageDigest;
|
||||
|
@ -41,13 +55,87 @@ final class BlockChecksumHelper {
|
|||
|
||||
static final Logger LOG = LoggerFactory.getLogger(BlockChecksumHelper.class);
|
||||
|
||||
private BlockChecksumHelper() {}
|
||||
private BlockChecksumHelper() {
|
||||
}
|
||||
|
||||
/**
|
||||
* The abstract base block checksum computer.
|
||||
*/
|
||||
static abstract class BlockChecksumComputer {
|
||||
static abstract class AbstractBlockChecksumComputer {
|
||||
private final DataNode datanode;
|
||||
|
||||
private byte[] outBytes;
|
||||
private int bytesPerCRC = -1;
|
||||
private DataChecksum.Type crcType = null;
|
||||
private long crcPerBlock = -1;
|
||||
private int checksumSize = -1;
|
||||
|
||||
AbstractBlockChecksumComputer(DataNode datanode) throws IOException {
|
||||
this.datanode = datanode;
|
||||
}
|
||||
|
||||
abstract void compute() throws IOException;
|
||||
|
||||
Sender createSender(IOStreamPair pair) {
|
||||
DataOutputStream out = (DataOutputStream) pair.out;
|
||||
return new Sender(out);
|
||||
}
|
||||
|
||||
DataNode getDatanode() {
|
||||
return datanode;
|
||||
}
|
||||
|
||||
InputStream getBlockInputStream(ExtendedBlock block, long seekOffset)
|
||||
throws IOException {
|
||||
return datanode.data.getBlockInputStream(block, seekOffset);
|
||||
}
|
||||
|
||||
void setOutBytes(byte[] bytes) {
|
||||
this.outBytes = bytes;
|
||||
}
|
||||
|
||||
byte[] getOutBytes() {
|
||||
return outBytes;
|
||||
}
|
||||
|
||||
int getBytesPerCRC() {
|
||||
return bytesPerCRC;
|
||||
}
|
||||
|
||||
public void setBytesPerCRC(int bytesPerCRC) {
|
||||
this.bytesPerCRC = bytesPerCRC;
|
||||
}
|
||||
|
||||
public void setCrcType(DataChecksum.Type crcType) {
|
||||
this.crcType = crcType;
|
||||
}
|
||||
|
||||
public void setCrcPerBlock(long crcPerBlock) {
|
||||
this.crcPerBlock = crcPerBlock;
|
||||
}
|
||||
|
||||
public void setChecksumSize(int checksumSize) {
|
||||
this.checksumSize = checksumSize;
|
||||
}
|
||||
|
||||
DataChecksum.Type getCrcType() {
|
||||
return crcType;
|
||||
}
|
||||
|
||||
long getCrcPerBlock() {
|
||||
return crcPerBlock;
|
||||
}
|
||||
|
||||
int getChecksumSize() {
|
||||
return checksumSize;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* The abstract base block checksum computer.
|
||||
*/
|
||||
static abstract class BlockChecksumComputer
|
||||
extends AbstractBlockChecksumComputer {
|
||||
private final ExtendedBlock block;
|
||||
// client side now can specify a range of the block for checksum
|
||||
private final long requestLength;
|
||||
|
@ -56,17 +144,12 @@ final class BlockChecksumHelper {
|
|||
private final long visibleLength;
|
||||
private final boolean partialBlk;
|
||||
|
||||
private byte[] outBytes;
|
||||
private int bytesPerCRC = -1;
|
||||
private DataChecksum.Type crcType = null;
|
||||
private long crcPerBlock = -1;
|
||||
private int checksumSize = -1;
|
||||
private BlockMetadataHeader header;
|
||||
private DataChecksum checksum;
|
||||
|
||||
BlockChecksumComputer(DataNode datanode,
|
||||
ExtendedBlock block) throws IOException {
|
||||
this.datanode = datanode;
|
||||
super(datanode);
|
||||
this.block = block;
|
||||
this.requestLength = block.getNumBytes();
|
||||
Preconditions.checkArgument(requestLength >= 0);
|
||||
|
@ -81,98 +164,80 @@ final class BlockChecksumHelper {
|
|||
new BufferedInputStream(metadataIn, ioFileBufferSize));
|
||||
}
|
||||
|
||||
protected DataNode getDatanode() {
|
||||
return datanode;
|
||||
Sender createSender(IOStreamPair pair) {
|
||||
DataOutputStream out = (DataOutputStream) pair.out;
|
||||
return new Sender(out);
|
||||
}
|
||||
|
||||
protected ExtendedBlock getBlock() {
|
||||
|
||||
ExtendedBlock getBlock() {
|
||||
return block;
|
||||
}
|
||||
|
||||
protected long getRequestLength() {
|
||||
long getRequestLength() {
|
||||
return requestLength;
|
||||
}
|
||||
|
||||
protected LengthInputStream getMetadataIn() {
|
||||
LengthInputStream getMetadataIn() {
|
||||
return metadataIn;
|
||||
}
|
||||
|
||||
protected DataInputStream getChecksumIn() {
|
||||
DataInputStream getChecksumIn() {
|
||||
return checksumIn;
|
||||
}
|
||||
|
||||
protected long getVisibleLength() {
|
||||
long getVisibleLength() {
|
||||
return visibleLength;
|
||||
}
|
||||
|
||||
protected boolean isPartialBlk() {
|
||||
boolean isPartialBlk() {
|
||||
return partialBlk;
|
||||
}
|
||||
|
||||
protected void setOutBytes(byte[] bytes) {
|
||||
this.outBytes = bytes;
|
||||
}
|
||||
|
||||
protected byte[] getOutBytes() {
|
||||
return outBytes;
|
||||
}
|
||||
|
||||
protected int getBytesPerCRC() {
|
||||
return bytesPerCRC;
|
||||
}
|
||||
|
||||
protected DataChecksum.Type getCrcType() {
|
||||
return crcType;
|
||||
}
|
||||
|
||||
protected long getCrcPerBlock() {
|
||||
return crcPerBlock;
|
||||
}
|
||||
|
||||
protected int getChecksumSize() {
|
||||
return checksumSize;
|
||||
}
|
||||
|
||||
protected BlockMetadataHeader getHeader() {
|
||||
BlockMetadataHeader getHeader() {
|
||||
return header;
|
||||
}
|
||||
|
||||
protected DataChecksum getChecksum() {
|
||||
DataChecksum getChecksum() {
|
||||
return checksum;
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform the block checksum computing.
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
abstract void compute() throws IOException;
|
||||
|
||||
/**
|
||||
* Read block metadata header.
|
||||
*
|
||||
* @throws IOException
|
||||
*/
|
||||
protected void readHeader() throws IOException {
|
||||
void readHeader() throws IOException {
|
||||
//read metadata file
|
||||
header = BlockMetadataHeader.readHeader(checksumIn);
|
||||
checksum = header.getChecksum();
|
||||
checksumSize = checksum.getChecksumSize();
|
||||
bytesPerCRC = checksum.getBytesPerChecksum();
|
||||
crcPerBlock = checksumSize <= 0 ? 0 :
|
||||
setChecksumSize(checksum.getChecksumSize());
|
||||
setBytesPerCRC(checksum.getBytesPerChecksum());
|
||||
long crcPerBlock = checksum.getChecksumSize() <= 0 ? 0 :
|
||||
(metadataIn.getLength() -
|
||||
BlockMetadataHeader.getHeaderSize()) / checksumSize;
|
||||
crcType = checksum.getChecksumType();
|
||||
BlockMetadataHeader.getHeaderSize()) / checksum.getChecksumSize();
|
||||
setCrcPerBlock(crcPerBlock);
|
||||
setCrcType(checksum.getChecksumType());
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculate partial block checksum.
|
||||
*
|
||||
* @return
|
||||
* @throws IOException
|
||||
*/
|
||||
protected byte[] crcPartialBlock() throws IOException {
|
||||
int partialLength = (int) (requestLength % bytesPerCRC);
|
||||
byte[] crcPartialBlock() throws IOException {
|
||||
int partialLength = (int) (requestLength % getBytesPerCRC());
|
||||
if (partialLength > 0) {
|
||||
byte[] buf = new byte[partialLength];
|
||||
final InputStream blockIn = datanode.data.getBlockInputStream(block,
|
||||
final InputStream blockIn = getBlockInputStream(block,
|
||||
requestLength - partialLength);
|
||||
try {
|
||||
// Get the CRC of the partialLength.
|
||||
|
@ -181,7 +246,7 @@ final class BlockChecksumHelper {
|
|||
IOUtils.closeStream(blockIn);
|
||||
}
|
||||
checksum.update(buf, 0, partialLength);
|
||||
byte[] partialCrc = new byte[checksumSize];
|
||||
byte[] partialCrc = new byte[getChecksumSize()];
|
||||
checksum.writeValue(partialCrc, 0, true);
|
||||
return partialCrc;
|
||||
}
|
||||
|
@ -251,4 +316,115 @@ final class BlockChecksumHelper {
|
|||
return new MD5Hash(digester.digest());
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Non-striped block group checksum computer for striped blocks.
|
||||
*/
|
||||
static class BlockGroupNonStripedChecksumComputer
|
||||
extends AbstractBlockChecksumComputer {
|
||||
|
||||
private final ExtendedBlock blockGroup;
|
||||
private final ErasureCodingPolicy ecPolicy;
|
||||
private final DatanodeInfo[] datanodes;
|
||||
private final Token<BlockTokenIdentifier>[] blockTokens;
|
||||
|
||||
private final DataOutputBuffer md5writer = new DataOutputBuffer();
|
||||
|
||||
BlockGroupNonStripedChecksumComputer(DataNode datanode,
|
||||
StripedBlockInfo stripedBlockInfo)
|
||||
throws IOException {
|
||||
super(datanode);
|
||||
this.blockGroup = stripedBlockInfo.getBlock();
|
||||
this.ecPolicy = stripedBlockInfo.getErasureCodingPolicy();
|
||||
this.datanodes = stripedBlockInfo.getDatanodes();
|
||||
this.blockTokens = stripedBlockInfo.getBlockTokens();
|
||||
}
|
||||
|
||||
@Override
|
||||
void compute() throws IOException {
|
||||
for (int idx = 0; idx < ecPolicy.getNumDataUnits(); idx++) {
|
||||
ExtendedBlock block =
|
||||
StripedBlockUtil.constructInternalBlock(blockGroup,
|
||||
ecPolicy.getCellSize(), ecPolicy.getNumDataUnits(), idx);
|
||||
DatanodeInfo targetDatanode = datanodes[idx];
|
||||
Token<BlockTokenIdentifier> blockToken = blockTokens[idx];
|
||||
checksumBlock(block, idx, blockToken, targetDatanode);
|
||||
}
|
||||
|
||||
MD5Hash md5out = MD5Hash.digest(md5writer.getData());
|
||||
setOutBytes(md5out.getDigest());
|
||||
}
|
||||
|
||||
private void checksumBlock(ExtendedBlock block, int blockIdx,
|
||||
Token<BlockTokenIdentifier> blockToken,
|
||||
DatanodeInfo targetDatanode) throws IOException {
|
||||
int timeout = 3000;
|
||||
try (IOStreamPair pair = getDatanode().connectToDN(targetDatanode,
|
||||
timeout, block, blockToken)) {
|
||||
|
||||
LOG.debug("write to {}: {}, block={}",
|
||||
getDatanode(), Op.BLOCK_CHECKSUM, block);
|
||||
|
||||
// get block MD5
|
||||
createSender(pair).blockChecksum(block, blockToken);
|
||||
|
||||
final DataTransferProtos.BlockOpResponseProto reply =
|
||||
DataTransferProtos.BlockOpResponseProto.parseFrom(
|
||||
PBHelperClient.vintPrefixed(pair.in));
|
||||
|
||||
String logInfo = "for block " + block
|
||||
+ " from datanode " + targetDatanode;
|
||||
DataTransferProtoUtil.checkBlockOpStatus(reply, logInfo);
|
||||
|
||||
DataTransferProtos.OpBlockChecksumResponseProto checksumData =
|
||||
reply.getChecksumResponse();
|
||||
|
||||
//read byte-per-checksum
|
||||
final int bpc = checksumData.getBytesPerCrc();
|
||||
if (blockIdx == 0) { //first block
|
||||
setBytesPerCRC(bpc);
|
||||
} else if (bpc != getBytesPerCRC()) {
|
||||
throw new IOException("Byte-per-checksum not matched: bpc=" + bpc
|
||||
+ " but bytesPerCRC=" + getBytesPerCRC());
|
||||
}
|
||||
|
||||
//read crc-per-block
|
||||
final long cpb = checksumData.getCrcPerBlock();
|
||||
if (blockIdx == 0) {
|
||||
setCrcPerBlock(cpb);
|
||||
}
|
||||
|
||||
//read md5
|
||||
final MD5Hash md5 = new MD5Hash(
|
||||
checksumData.getMd5().toByteArray());
|
||||
md5.write(md5writer);
|
||||
|
||||
// read crc-type
|
||||
final DataChecksum.Type ct;
|
||||
if (checksumData.hasCrcType()) {
|
||||
ct = PBHelperClient.convert(checksumData.getCrcType());
|
||||
} else {
|
||||
LOG.debug("Retrieving checksum from an earlier-version DataNode: " +
|
||||
"inferring checksum by reading first byte");
|
||||
ct = DataChecksum.Type.DEFAULT;
|
||||
}
|
||||
|
||||
if (blockIdx == 0) { // first block
|
||||
setCrcType(ct);
|
||||
} else if (getCrcType() != DataChecksum.Type.MIXED &&
|
||||
getCrcType() != ct) {
|
||||
// if crc types are mixed in a file
|
||||
setCrcType(DataChecksum.Type.MIXED);
|
||||
}
|
||||
|
||||
if (LOG.isDebugEnabled()) {
|
||||
if (blockIdx == 0) {
|
||||
LOG.debug("set bytesPerCRC=" + getBytesPerCRC()
|
||||
+ ", crcPerBlock=" + getCrcPerBlock());
|
||||
}
|
||||
LOG.debug("got reply from " + targetDatanode + ": md5=" + md5);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
|
@ -28,6 +28,7 @@ import org.apache.hadoop.hdfs.net.Peer;
|
|||
import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.ExtendedBlock;
|
||||
import org.apache.hadoop.hdfs.protocol.HdfsConstants;
|
||||
import org.apache.hadoop.hdfs.protocol.StripedBlockInfo;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.BlockConstructionStage;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferProtoUtil;
|
||||
import org.apache.hadoop.hdfs.protocol.datatransfer.IOStreamPair;
|
||||
|
@ -46,7 +47,9 @@ import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;
|
|||
import org.apache.hadoop.hdfs.protocolPB.PBHelperClient;
|
||||
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
|
||||
import org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper.BlockChecksumComputer;
|
||||
import org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper.AbstractBlockChecksumComputer;
|
||||
import org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper.ReplicatedBlockChecksumComputer;
|
||||
import org.apache.hadoop.hdfs.server.datanode.BlockChecksumHelper.BlockGroupNonStripedChecksumComputer;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNode.ShortCircuitFdsUnsupportedException;
|
||||
import org.apache.hadoop.hdfs.server.datanode.DataNode.ShortCircuitFdsVersionException;
|
||||
import org.apache.hadoop.hdfs.server.datanode.ShortCircuitRegistry.NewShmInfo;
|
||||
|
@ -923,6 +926,46 @@ class DataXceiver extends Receiver implements Runnable {
|
|||
datanode.metrics.addBlockChecksumOp(elapsed());
|
||||
}
|
||||
|
||||
@Override
|
||||
public void blockGroupChecksum(final StripedBlockInfo stripedBlockInfo,
|
||||
final Token<BlockTokenIdentifier> blockToken)
|
||||
throws IOException {
|
||||
updateCurrentThreadName("Getting checksum for block group" +
|
||||
stripedBlockInfo.getBlock());
|
||||
final DataOutputStream out = new DataOutputStream(getOutputStream());
|
||||
checkAccess(out, true, stripedBlockInfo.getBlock(), blockToken,
|
||||
Op.BLOCK_GROUP_CHECKSUM, BlockTokenIdentifier.AccessMode.READ);
|
||||
|
||||
AbstractBlockChecksumComputer maker =
|
||||
new BlockGroupNonStripedChecksumComputer(datanode, stripedBlockInfo);
|
||||
|
||||
try {
|
||||
maker.compute();
|
||||
|
||||
//write reply
|
||||
BlockOpResponseProto.newBuilder()
|
||||
.setStatus(SUCCESS)
|
||||
.setChecksumResponse(OpBlockChecksumResponseProto.newBuilder()
|
||||
.setBytesPerCrc(maker.getBytesPerCRC())
|
||||
.setCrcPerBlock(maker.getCrcPerBlock())
|
||||
.setMd5(ByteString.copyFrom(maker.getOutBytes()))
|
||||
.setCrcType(PBHelperClient.convert(maker.getCrcType())))
|
||||
.build()
|
||||
.writeDelimitedTo(out);
|
||||
out.flush();
|
||||
} catch (IOException ioe) {
|
||||
LOG.info("blockChecksum " + stripedBlockInfo.getBlock() +
|
||||
" received exception " + ioe);
|
||||
incrDatanodeNetworkErrors();
|
||||
throw ioe;
|
||||
} finally {
|
||||
IOUtils.closeStream(out);
|
||||
}
|
||||
|
||||
//update metrics
|
||||
datanode.metrics.addBlockChecksumOp(elapsed());
|
||||
}
|
||||
|
||||
@Override
|
||||
public void copyBlock(final ExtendedBlock block,
|
||||
final Token<BlockTokenIdentifier> blockToken) throws IOException {
|
||||
|
|
Loading…
Reference in New Issue