Java Code Examples for org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto#parseFrom()
The following examples show how to use
org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto#parseFrom() .
You can vote up the ones you like or vote down the ones you don't like,
and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
| Source File: DFSClient.java From hadoop with Apache License 2.0 | 6 votes |
|
/**
* Infer the checksum type for a replica by sending an OP_READ_BLOCK
* for the first byte of that replica. This is used for compatibility
* with older HDFS versions which did not include the checksum type in
* OpBlockChecksumResponseProto.
*
* @param lb the located block
* @param dn the connected datanode
* @return the inferred checksum type
* @throws IOException if an error occurs
*/
private Type inferChecksumTypeByReading(LocatedBlock lb, DatanodeInfo dn)
throws IOException {
IOStreamPair pair = connectToDN(dn, dfsClientConf.socketTimeout, lb);
try {
DataOutputStream out = new DataOutputStream(new BufferedOutputStream(pair.out,
HdfsConstants.SMALL_BUFFER_SIZE));
DataInputStream in = new DataInputStream(pair.in);
new Sender(out).readBlock(lb.getBlock(), lb.getBlockToken(), clientName,
0, 1, true, CachingStrategy.newDefaultStrategy());
final BlockOpResponseProto reply =
BlockOpResponseProto.parseFrom(PBHelper.vintPrefixed(in));
String logInfo = "trying to read " + lb.getBlock() + " from datanode " + dn;
DataTransferProtoUtil.checkBlockOpStatus(reply, logInfo);
return PBHelper.convert(reply.getReadOpChecksumInfo().getChecksum().getType());
} finally {
IOUtils.cleanup(null, pair.in, pair.out);
}
}
Example 2
| Source File: DFSClient.java From big-c with Apache License 2.0 | 6 votes |
|
/**
* Infer the checksum type for a replica by sending an OP_READ_BLOCK
* for the first byte of that replica. This is used for compatibility
* with older HDFS versions which did not include the checksum type in
* OpBlockChecksumResponseProto.
*
* @param lb the located block
* @param dn the connected datanode
* @return the inferred checksum type
* @throws IOException if an error occurs
*/
private Type inferChecksumTypeByReading(LocatedBlock lb, DatanodeInfo dn)
throws IOException {
IOStreamPair pair = connectToDN(dn, dfsClientConf.socketTimeout, lb);
try {
DataOutputStream out = new DataOutputStream(new BufferedOutputStream(pair.out,
HdfsConstants.SMALL_BUFFER_SIZE));
DataInputStream in = new DataInputStream(pair.in);
new Sender(out).readBlock(lb.getBlock(), lb.getBlockToken(), clientName,
0, 1, true, CachingStrategy.newDefaultStrategy());
final BlockOpResponseProto reply =
BlockOpResponseProto.parseFrom(PBHelper.vintPrefixed(in));
String logInfo = "trying to read " + lb.getBlock() + " from datanode " + dn;
DataTransferProtoUtil.checkBlockOpStatus(reply, logInfo);
return PBHelper.convert(reply.getReadOpChecksumInfo().getChecksum().getType());
} finally {
IOUtils.cleanup(null, pair.in, pair.out);
}
}
Example 3
| Source File: Dispatcher.java From hadoop with Apache License 2.0 | 5 votes |
|
/** Receive a block copy response from the input stream */
private void receiveResponse(DataInputStream in) throws IOException {
BlockOpResponseProto response =
BlockOpResponseProto.parseFrom(vintPrefixed(in));
while (response.getStatus() == Status.IN_PROGRESS) {
// read intermediate responses
response = BlockOpResponseProto.parseFrom(vintPrefixed(in));
}
String logInfo = "block move is failed";
DataTransferProtoUtil.checkBlockOpStatus(response, logInfo);
}
Example 4
| Source File: Dispatcher.java From big-c with Apache License 2.0 | 5 votes |
|
/** Receive a block copy response from the input stream */
private void receiveResponse(DataInputStream in) throws IOException {
BlockOpResponseProto response =
BlockOpResponseProto.parseFrom(vintPrefixed(in));
while (response.getStatus() == Status.IN_PROGRESS) {
// read intermediate responses
response = BlockOpResponseProto.parseFrom(vintPrefixed(in));
}
String logInfo = "block move is failed";
DataTransferProtoUtil.checkBlockOpStatus(response, logInfo);
}
Example 5
| Source File: RemoteBlockReader.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Create a new BlockReader specifically to satisfy a read.
* This method also sends the OP_READ_BLOCK request.
*
* @param file File location
* @param block The block object
* @param blockToken The block token for security
* @param startOffset The read offset, relative to block head
* @param len The number of bytes to read
* @param bufferSize The IO buffer size (not the client buffer size)
* @param verifyChecksum Whether to verify checksum
* @param clientName Client name
* @return New BlockReader instance, or null on error.
*/
public static RemoteBlockReader newBlockReader(String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset, long len,
int bufferSize, boolean verifyChecksum,
String clientName, Peer peer,
DatanodeID datanodeID,
PeerCache peerCache,
CachingStrategy cachingStrategy)
throws IOException {
// in and out will be closed when sock is closed (by the caller)
final DataOutputStream out =
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream()));
new Sender(out).readBlock(block, blockToken, clientName, startOffset, len,
verifyChecksum, cachingStrategy);
//
// Get bytes in block, set streams
//
DataInputStream in = new DataInputStream(
new BufferedInputStream(peer.getInputStream(), bufferSize));
BlockOpResponseProto status = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
RemoteBlockReader2.checkSuccess(status, peer, block, file);
ReadOpChecksumInfoProto checksumInfo =
status.getReadOpChecksumInfo();
DataChecksum checksum = DataTransferProtoUtil.fromProto(
checksumInfo.getChecksum());
//Warning when we get CHECKSUM_NULL?
// Read the first chunk offset.
long firstChunkOffset = checksumInfo.getChunkOffset();
if ( firstChunkOffset < 0 || firstChunkOffset > startOffset ||
firstChunkOffset <= (startOffset - checksum.getBytesPerChecksum())) {
throw new IOException("BlockReader: error in first chunk offset (" +
firstChunkOffset + ") startOffset is " +
startOffset + " for file " + file);
}
return new RemoteBlockReader(file, block.getBlockPoolId(), block.getBlockId(),
in, checksum, verifyChecksum, startOffset, firstChunkOffset, len,
peer, datanodeID, peerCache);
}
Example 6
| Source File: RemoteBlockReader2.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Create a new BlockReader specifically to satisfy a read.
* This method also sends the OP_READ_BLOCK request.
*
* @param file File location
* @param block The block object
* @param blockToken The block token for security
* @param startOffset The read offset, relative to block head
* @param len The number of bytes to read
* @param verifyChecksum Whether to verify checksum
* @param clientName Client name
* @param peer The Peer to use
* @param datanodeID The DatanodeID this peer is connected to
* @return New BlockReader instance, or null on error.
*/
public static BlockReader newBlockReader(String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset, long len,
boolean verifyChecksum,
String clientName,
Peer peer, DatanodeID datanodeID,
PeerCache peerCache,
CachingStrategy cachingStrategy) throws IOException {
// in and out will be closed when sock is closed (by the caller)
final DataOutputStream out = new DataOutputStream(new BufferedOutputStream(
peer.getOutputStream()));
new Sender(out).readBlock(block, blockToken, clientName, startOffset, len,
verifyChecksum, cachingStrategy);
//
// Get bytes in block
//
DataInputStream in = new DataInputStream(peer.getInputStream());
BlockOpResponseProto status = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
checkSuccess(status, peer, block, file);
ReadOpChecksumInfoProto checksumInfo =
status.getReadOpChecksumInfo();
DataChecksum checksum = DataTransferProtoUtil.fromProto(
checksumInfo.getChecksum());
//Warning when we get CHECKSUM_NULL?
// Read the first chunk offset.
long firstChunkOffset = checksumInfo.getChunkOffset();
if ( firstChunkOffset < 0 || firstChunkOffset > startOffset ||
firstChunkOffset <= (startOffset - checksum.getBytesPerChecksum())) {
throw new IOException("BlockReader: error in first chunk offset (" +
firstChunkOffset + ") startOffset is " +
startOffset + " for file " + file);
}
return new RemoteBlockReader2(file, block.getBlockPoolId(), block.getBlockId(),
checksum, verifyChecksum, startOffset, firstChunkOffset, len, peer,
datanodeID, peerCache);
}
Example 7
| Source File: BlockReaderFactory.java From hadoop with Apache License 2.0 | 4 votes |
|
/**
* Request file descriptors from a DomainPeer.
*
* @param peer The peer to use for communication.
* @param slot If non-null, the shared memory slot to associate with the
* new ShortCircuitReplica.
*
* @return A ShortCircuitReplica object if we could communicate with the
* datanode; null, otherwise.
* @throws IOException If we encountered an I/O exception while communicating
* with the datanode.
*/
private ShortCircuitReplicaInfo requestFileDescriptors(DomainPeer peer,
Slot slot) throws IOException {
ShortCircuitCache cache = clientContext.getShortCircuitCache();
final DataOutputStream out =
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream()));
SlotId slotId = slot == null ? null : slot.getSlotId();
new Sender(out).requestShortCircuitFds(block, token, slotId, 1,
failureInjector.getSupportsReceiptVerification());
DataInputStream in = new DataInputStream(peer.getInputStream());
BlockOpResponseProto resp = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
DomainSocket sock = peer.getDomainSocket();
failureInjector.injectRequestFileDescriptorsFailure();
switch (resp.getStatus()) {
case SUCCESS:
byte buf[] = new byte[1];
FileInputStream fis[] = new FileInputStream[2];
sock.recvFileInputStreams(fis, buf, 0, buf.length);
ShortCircuitReplica replica = null;
try {
ExtendedBlockId key =
new ExtendedBlockId(block.getBlockId(), block.getBlockPoolId());
if (buf[0] == USE_RECEIPT_VERIFICATION.getNumber()) {
LOG.trace("Sending receipt verification byte for slot " + slot);
sock.getOutputStream().write(0);
}
replica = new ShortCircuitReplica(key, fis[0], fis[1], cache,
Time.monotonicNow(), slot);
return new ShortCircuitReplicaInfo(replica);
} catch (IOException e) {
// This indicates an error reading from disk, or a format error. Since
// it's not a socket communication problem, we return null rather than
// throwing an exception.
LOG.warn(this + ": error creating ShortCircuitReplica.", e);
return null;
} finally {
if (replica == null) {
IOUtils.cleanup(DFSClient.LOG, fis[0], fis[1]);
}
}
case ERROR_UNSUPPORTED:
if (!resp.hasShortCircuitAccessVersion()) {
LOG.warn("short-circuit read access is disabled for " +
"DataNode " + datanode + ". reason: " + resp.getMessage());
clientContext.getDomainSocketFactory()
.disableShortCircuitForPath(pathInfo.getPath());
} else {
LOG.warn("short-circuit read access for the file " +
fileName + " is disabled for DataNode " + datanode +
". reason: " + resp.getMessage());
}
return null;
case ERROR_ACCESS_TOKEN:
String msg = "access control error while " +
"attempting to set up short-circuit access to " +
fileName + resp.getMessage();
if (LOG.isDebugEnabled()) {
LOG.debug(this + ":" + msg);
}
return new ShortCircuitReplicaInfo(new InvalidToken(msg));
default:
LOG.warn(this + ": unknown response code " + resp.getStatus() +
" while attempting to set up short-circuit access. " +
resp.getMessage());
clientContext.getDomainSocketFactory()
.disableShortCircuitForPath(pathInfo.getPath());
return null;
}
}
Example 8
| Source File: RemoteBlockReader.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Create a new BlockReader specifically to satisfy a read.
* This method also sends the OP_READ_BLOCK request.
*
* @param file File location
* @param block The block object
* @param blockToken The block token for security
* @param startOffset The read offset, relative to block head
* @param len The number of bytes to read
* @param bufferSize The IO buffer size (not the client buffer size)
* @param verifyChecksum Whether to verify checksum
* @param clientName Client name
* @return New BlockReader instance, or null on error.
*/
public static RemoteBlockReader newBlockReader(String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset, long len,
int bufferSize, boolean verifyChecksum,
String clientName, Peer peer,
DatanodeID datanodeID,
PeerCache peerCache,
CachingStrategy cachingStrategy)
throws IOException {
// in and out will be closed when sock is closed (by the caller)
final DataOutputStream out =
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream()));
new Sender(out).readBlock(block, blockToken, clientName, startOffset, len,
verifyChecksum, cachingStrategy);
//
// Get bytes in block, set streams
//
DataInputStream in = new DataInputStream(
new BufferedInputStream(peer.getInputStream(), bufferSize));
BlockOpResponseProto status = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
RemoteBlockReader2.checkSuccess(status, peer, block, file);
ReadOpChecksumInfoProto checksumInfo =
status.getReadOpChecksumInfo();
DataChecksum checksum = DataTransferProtoUtil.fromProto(
checksumInfo.getChecksum());
//Warning when we get CHECKSUM_NULL?
// Read the first chunk offset.
long firstChunkOffset = checksumInfo.getChunkOffset();
if ( firstChunkOffset < 0 || firstChunkOffset > startOffset ||
firstChunkOffset <= (startOffset - checksum.getBytesPerChecksum())) {
throw new IOException("BlockReader: error in first chunk offset (" +
firstChunkOffset + ") startOffset is " +
startOffset + " for file " + file);
}
return new RemoteBlockReader(file, block.getBlockPoolId(), block.getBlockId(),
in, checksum, verifyChecksum, startOffset, firstChunkOffset, len,
peer, datanodeID, peerCache);
}
Example 9
| Source File: RemoteBlockReader2.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Create a new BlockReader specifically to satisfy a read.
* This method also sends the OP_READ_BLOCK request.
*
* @param file File location
* @param block The block object
* @param blockToken The block token for security
* @param startOffset The read offset, relative to block head
* @param len The number of bytes to read
* @param verifyChecksum Whether to verify checksum
* @param clientName Client name
* @param peer The Peer to use
* @param datanodeID The DatanodeID this peer is connected to
* @return New BlockReader instance, or null on error.
*/
public static BlockReader newBlockReader(String file,
ExtendedBlock block,
Token<BlockTokenIdentifier> blockToken,
long startOffset, long len,
boolean verifyChecksum,
String clientName,
Peer peer, DatanodeID datanodeID,
PeerCache peerCache,
CachingStrategy cachingStrategy) throws IOException {
// in and out will be closed when sock is closed (by the caller)
final DataOutputStream out = new DataOutputStream(new BufferedOutputStream(
peer.getOutputStream()));
new Sender(out).readBlock(block, blockToken, clientName, startOffset, len,
verifyChecksum, cachingStrategy);
//
// Get bytes in block
//
DataInputStream in = new DataInputStream(peer.getInputStream());
BlockOpResponseProto status = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
checkSuccess(status, peer, block, file);
ReadOpChecksumInfoProto checksumInfo =
status.getReadOpChecksumInfo();
DataChecksum checksum = DataTransferProtoUtil.fromProto(
checksumInfo.getChecksum());
//Warning when we get CHECKSUM_NULL?
// Read the first chunk offset.
long firstChunkOffset = checksumInfo.getChunkOffset();
if ( firstChunkOffset < 0 || firstChunkOffset > startOffset ||
firstChunkOffset <= (startOffset - checksum.getBytesPerChecksum())) {
throw new IOException("BlockReader: error in first chunk offset (" +
firstChunkOffset + ") startOffset is " +
startOffset + " for file " + file);
}
return new RemoteBlockReader2(file, block.getBlockPoolId(), block.getBlockId(),
checksum, verifyChecksum, startOffset, firstChunkOffset, len, peer,
datanodeID, peerCache);
}
Example 10
| Source File: BlockReaderFactory.java From big-c with Apache License 2.0 | 4 votes |
|
/**
* Request file descriptors from a DomainPeer.
*
* @param peer The peer to use for communication.
* @param slot If non-null, the shared memory slot to associate with the
* new ShortCircuitReplica.
*
* @return A ShortCircuitReplica object if we could communicate with the
* datanode; null, otherwise.
* @throws IOException If we encountered an I/O exception while communicating
* with the datanode.
*/
private ShortCircuitReplicaInfo requestFileDescriptors(DomainPeer peer,
Slot slot) throws IOException {
ShortCircuitCache cache = clientContext.getShortCircuitCache();
final DataOutputStream out =
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream()));
SlotId slotId = slot == null ? null : slot.getSlotId();
new Sender(out).requestShortCircuitFds(block, token, slotId, 1,
failureInjector.getSupportsReceiptVerification());
DataInputStream in = new DataInputStream(peer.getInputStream());
BlockOpResponseProto resp = BlockOpResponseProto.parseFrom(
PBHelper.vintPrefixed(in));
DomainSocket sock = peer.getDomainSocket();
failureInjector.injectRequestFileDescriptorsFailure();
switch (resp.getStatus()) {
case SUCCESS:
byte buf[] = new byte[1];
FileInputStream fis[] = new FileInputStream[2];
sock.recvFileInputStreams(fis, buf, 0, buf.length);
ShortCircuitReplica replica = null;
try {
ExtendedBlockId key =
new ExtendedBlockId(block.getBlockId(), block.getBlockPoolId());
if (buf[0] == USE_RECEIPT_VERIFICATION.getNumber()) {
LOG.trace("Sending receipt verification byte for slot " + slot);
sock.getOutputStream().write(0);
}
replica = new ShortCircuitReplica(key, fis[0], fis[1], cache,
Time.monotonicNow(), slot);
return new ShortCircuitReplicaInfo(replica);
} catch (IOException e) {
// This indicates an error reading from disk, or a format error. Since
// it's not a socket communication problem, we return null rather than
// throwing an exception.
LOG.warn(this + ": error creating ShortCircuitReplica.", e);
return null;
} finally {
if (replica == null) {
IOUtils.cleanup(DFSClient.LOG, fis[0], fis[1]);
}
}
case ERROR_UNSUPPORTED:
if (!resp.hasShortCircuitAccessVersion()) {
LOG.warn("short-circuit read access is disabled for " +
"DataNode " + datanode + ". reason: " + resp.getMessage());
clientContext.getDomainSocketFactory()
.disableShortCircuitForPath(pathInfo.getPath());
} else {
LOG.warn("short-circuit read access for the file " +
fileName + " is disabled for DataNode " + datanode +
". reason: " + resp.getMessage());
}
return null;
case ERROR_ACCESS_TOKEN:
String msg = "access control error while " +
"attempting to set up short-circuit access to " +
fileName + resp.getMessage();
if (LOG.isDebugEnabled()) {
LOG.debug(this + ":" + msg);
}
return new ShortCircuitReplicaInfo(new InvalidToken(msg));
default:
LOG.warn(this + ": unknown response code " + resp.getStatus() +
" while attempting to set up short-circuit access. " +
resp.getMessage());
clientContext.getDomainSocketFactory()
.disableShortCircuitForPath(pathInfo.getPath());
return null;
}
}
