public void testV0LegacyTranslogVersion() throws Exception {
Path translogFile = getDataPath("/org/elasticsearch/index/translog/translog-v0.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
try (ImmutableTranslogReader reader = openReader(translogFile, 0)) {
assertThat(
"a version0 stream is returned", reader instanceof LegacyTranslogReader, equalTo(true));
try (final Translog.Snapshot snapshot = reader.newSnapshot()) {
final Translog.Operation operation = snapshot.next();
assertThat(
"operation is the correct type correctly",
operation.opType() == Translog.Operation.Type.INDEX,
equalTo(true));
Translog.Index op = (Translog.Index) operation;
assertThat(op.id(), equalTo("1"));
assertThat(op.type(), equalTo("doc"));
assertThat(
op.source().toUtf8(),
equalTo("{\"body\": \"worda wordb wordc wordd \\\"worde\\\" wordf\"}"));
assertThat(op.routing(), equalTo(null));
assertThat(op.parent(), equalTo(null));
assertThat(op.version(), equalTo(1L));
assertThat(op.timestamp(), equalTo(1407312091791L));
assertThat(op.ttl(), equalTo(-1L));
assertThat(op.versionType(), equalTo(VersionType.INTERNAL));
assertNull(snapshot.next());
}
}
}
public void testV1ChecksummedTranslogVersion() throws Exception {
Path translogFile = getDataPath("/org/elasticsearch/index/translog/translog-v1.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
try (ImmutableTranslogReader reader = openReader(translogFile, 0)) {
try (final Translog.Snapshot snapshot = reader.newSnapshot()) {
assertThat(
"a version1 stream is returned",
reader instanceof ImmutableTranslogReader,
equalTo(true));
Translog.Operation operation = snapshot.next();
assertThat(
"operation is the correct type correctly",
operation.opType() == Translog.Operation.Type.INDEX,
equalTo(true));
Translog.Index op = (Translog.Index) operation;
assertThat(op.id(), equalTo("Bwiq98KFSb6YjJQGeSpeiw"));
assertThat(op.type(), equalTo("doc"));
assertThat(op.source().toUtf8(), equalTo("{\"body\": \"foo\"}"));
assertThat(op.routing(), equalTo(null));
assertThat(op.parent(), equalTo(null));
assertThat(op.version(), equalTo(1L));
assertThat(op.timestamp(), equalTo(1408627184844L));
assertThat(op.ttl(), equalTo(-1L));
assertThat(op.versionType(), equalTo(VersionType.INTERNAL));
// There are more operations
int opNum = 1;
while (snapshot.next() != null) {
opNum++;
}
assertThat("there should be 5 translog operations", opNum, equalTo(5));
}
}
}
public void testCorruptedTranslogs() throws Exception {
try {
Path translogFile =
getDataPath("/org/elasticsearch/index/translog/translog-v1-corrupted-magic.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
openReader(translogFile, 0);
fail("should have thrown an exception about the header being corrupt");
} catch (TranslogCorruptedException e) {
assertThat(
"translog corruption from header: " + e.getMessage(),
e.getMessage()
.contains("translog looks like version 1 or later, but has corrupted header"),
equalTo(true));
}
try {
Path translogFile =
getDataPath("/org/elasticsearch/index/translog/translog-invalid-first-byte.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
openReader(translogFile, 0);
fail("should have thrown an exception about the header being corrupt");
} catch (TranslogCorruptedException e) {
assertThat(
"translog corruption from header: " + e.getMessage(),
e.getMessage()
.contains("Invalid first byte in translog file, got: 1, expected 0x00 or 0x3f"),
equalTo(true));
}
try {
Path translogFile =
getDataPath("/org/elasticsearch/index/translog/translog-v1-corrupted-body.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
try (ImmutableTranslogReader reader = openReader(translogFile, 0)) {
try (final Translog.Snapshot snapshot = reader.newSnapshot()) {
while (snapshot.next() != null) {}
}
}
fail("should have thrown an exception about the body being corrupted");
} catch (TranslogCorruptedException e) {
assertThat(
"translog corruption from body: " + e.getMessage(),
e.getMessage().contains("translog corruption while reading from stream"),
equalTo(true));
}
}
public void testTruncatedTranslog() throws Exception {
try {
Path translogFile =
getDataPath("/org/elasticsearch/index/translog/translog-v1-truncated.binary");
assertThat("test file should exist", Files.exists(translogFile), equalTo(true));
try (ImmutableTranslogReader reader = openReader(translogFile, 0)) {
try (final Translog.Snapshot snapshot = reader.newSnapshot()) {
while (snapshot.next() != null) {}
}
}
fail("should have thrown an exception about the body being truncated");
} catch (TranslogCorruptedException e) {
assertThat(
"translog truncated: " + e.getMessage(),
e.getMessage().contains("operation size is corrupted must be"),
equalTo(true));
}
}
/**
* Send the given snapshot's operations to this handler's target node.
*
* <p>Operations are bulked into a single request depending on an operation count limit or
* size-in-bytes limit
*
* @return the total number of translog operations that were sent
*/
protected int sendSnapshot(final Translog.Snapshot snapshot) {
int ops = 0;
long size = 0;
int totalOperations = 0;
final List<Translog.Operation> operations = new ArrayList<>();
Translog.Operation operation;
try {
operation = snapshot.next(); // this ex should bubble up
} catch (IOException ex) {
throw new ElasticsearchException("failed to get next operation from translog", ex);
}
if (operation == null) {
logger.trace(
"[{}][{}] no translog operations to send to {}",
indexName,
shardId,
request.targetNode());
}
while (operation != null) {
if (shard.state() == IndexShardState.CLOSED) {
throw new IndexShardClosedException(request.shardId());
}
cancellableThreads.checkForCancel();
operations.add(operation);
ops += 1;
size += operation.estimateSize();
totalOperations++;
// Check if this request is past bytes threshold, and
// if so, send it off
if (size >= chunkSizeInBytes) {
// don't throttle translog, since we lock for phase3 indexing,
// so we need to move it as fast as possible. Note, since we
// index docs to replicas while the index files are recovered
// the lock can potentially be removed, in which case, it might
// make sense to re-enable throttling in this phase
cancellableThreads.execute(
() -> recoveryTarget.indexTranslogOperations(operations, snapshot.totalOperations()));
if (logger.isTraceEnabled()) {
logger.trace(
"[{}][{}] sent batch of [{}][{}] (total: [{}]) translog operations to {}",
indexName,
shardId,
ops,
new ByteSizeValue(size),
snapshot.totalOperations(),
request.targetNode());
}
ops = 0;
size = 0;
operations.clear();
}
try {
operation = snapshot.next(); // this ex should bubble up
} catch (IOException ex) {
throw new ElasticsearchException("failed to get next operation from translog", ex);
}
}
// send the leftover
if (!operations.isEmpty()) {
cancellableThreads.execute(
() -> recoveryTarget.indexTranslogOperations(operations, snapshot.totalOperations()));
}
if (logger.isTraceEnabled()) {
logger.trace(
"[{}][{}] sent final batch of [{}][{}] (total: [{}]) translog operations to {}",
indexName,
shardId,
ops,
new ByteSizeValue(size),
snapshot.totalOperations(),
request.targetNode());
}
return totalOperations;
}
/**
* Send the given snapshot's operations to this handler's target node.
*
* <p>Operations are bulked into a single request depending on an operation count limit or
* size-in-bytes limit
*
* @return the total number of translog operations that were sent
*/
protected int sendSnapshot(Translog.Snapshot snapshot) throws ElasticsearchException {
int ops = 0;
long size = 0;
int totalOperations = 0;
final List<Translog.Operation> operations = Lists.newArrayList();
Translog.Operation operation = snapshot.next();
final TransportRequestOptions recoveryOptions =
TransportRequestOptions.options()
.withCompress(recoverySettings.compress())
.withType(TransportRequestOptions.Type.RECOVERY)
.withTimeout(recoverySettings.internalActionLongTimeout());
if (operation == null) {
logger.trace(
"[{}][{}] no translog operations (id: [{}]) to send to {}",
indexName,
shardId,
snapshot.translogId(),
request.targetNode());
}
while (operation != null) {
if (shard.state() == IndexShardState.CLOSED) {
throw new IndexShardClosedException(request.shardId());
}
cancellableThreads.checkForCancel();
operations.add(operation);
ops += 1;
size += operation.estimateSize();
totalOperations++;
// Check if this request is past the size or bytes threshold, and
// if so, send it off
if (ops >= recoverySettings.translogOps()
|| size >= recoverySettings.translogSize().bytes()) {
// don't throttle translog, since we lock for phase3 indexing,
// so we need to move it as fast as possible. Note, since we
// index docs to replicas while the index files are recovered
// the lock can potentially be removed, in which case, it might
// make sense to re-enable throttling in this phase
// if (recoverySettings.rateLimiter() != null) {
// recoverySettings.rateLimiter().pause(size);
// }
if (logger.isTraceEnabled()) {
logger.trace(
"[{}][{}] sending batch of [{}][{}] (total: [{}], id: [{}]) translog operations to {}",
indexName,
shardId,
ops,
new ByteSizeValue(size),
shard.translog().estimatedNumberOfOperations(),
snapshot.translogId(),
request.targetNode());
}
cancellableThreads.execute(
new Interruptable() {
@Override
public void run() throws InterruptedException {
final RecoveryTranslogOperationsRequest translogOperationsRequest =
new RecoveryTranslogOperationsRequest(
request.recoveryId(),
request.shardId(),
operations,
shard.translog().estimatedNumberOfOperations());
transportService
.submitRequest(
request.targetNode(),
RecoveryTarget.Actions.TRANSLOG_OPS,
translogOperationsRequest,
recoveryOptions,
EmptyTransportResponseHandler.INSTANCE_SAME)
.txGet();
}
});
ops = 0;
size = 0;
operations.clear();
}
operation = snapshot.next();
}
// send the leftover
if (logger.isTraceEnabled()) {
logger.trace(
"[{}][{}] sending final batch of [{}][{}] (total: [{}], id: [{}]) translog operations to {}",
indexName,
shardId,
ops,
new ByteSizeValue(size),
shard.translog().estimatedNumberOfOperations(),
snapshot.translogId(),
request.targetNode());
}
if (!operations.isEmpty()) {
cancellableThreads.execute(
new Interruptable() {
@Override
public void run() throws InterruptedException {
RecoveryTranslogOperationsRequest translogOperationsRequest =
new RecoveryTranslogOperationsRequest(
request.recoveryId(),
request.shardId(),
operations,
shard.translog().estimatedNumberOfOperations());
transportService
.submitRequest(
request.targetNode(),
RecoveryTarget.Actions.TRANSLOG_OPS,
translogOperationsRequest,
recoveryOptions,
EmptyTransportResponseHandler.INSTANCE_SAME)
.txGet();
}
});
}
return totalOperations;
}