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hantangwangdhantangwangd
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Refactor Iceberg connector to support call distributed procedure
1 parent 67d4964 commit 3d1560a

12 files changed

+474
-21
lines changed

‎presto-iceberg/src/main/java/com/facebook/presto/iceberg/CallDistributedProcedureSplitSource.java‎

Lines changed: 135 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,135 @@
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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
5+
*
6+
* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.facebook.presto.iceberg;
15+
16+
import com.facebook.presto.iceberg.delete.DeleteFile;
17+
import com.facebook.presto.spi.ConnectorSession;
18+
import com.facebook.presto.spi.ConnectorSplit;
19+
import com.facebook.presto.spi.ConnectorSplitSource;
20+
import com.facebook.presto.spi.SplitWeight;
21+
import com.facebook.presto.spi.connector.ConnectorPartitionHandle;
22+
import com.google.common.collect.ImmutableList;
23+
import com.google.common.io.Closer;
24+
import org.apache.iceberg.FileScanTask;
25+
import org.apache.iceberg.PartitionSpec;
26+
import org.apache.iceberg.PartitionSpecParser;
27+
import org.apache.iceberg.TableScan;
28+
import org.apache.iceberg.io.CloseableIterable;
29+
import org.apache.iceberg.io.CloseableIterator;
30+
31+
import java.io.IOException;
32+
import java.io.UncheckedIOException;
33+
import java.util.ArrayList;
34+
import java.util.Iterator;
35+
import java.util.List;
36+
import java.util.Optional;
37+
import java.util.concurrent.CompletableFuture;
38+
import java.util.function.Consumer;
39+
40+
import static com.facebook.presto.hive.HiveCommonSessionProperties.getNodeSelectionStrategy;
41+
import static com.facebook.presto.iceberg.FileFormat.fromIcebergFileFormat;
42+
import static com.facebook.presto.iceberg.IcebergUtil.getDataSequenceNumber;
43+
import static com.facebook.presto.iceberg.IcebergUtil.getPartitionKeys;
44+
import static com.facebook.presto.iceberg.IcebergUtil.partitionDataFromStructLike;
45+
import static com.google.common.collect.ImmutableList.toImmutableList;
46+
import static com.google.common.collect.Iterators.limit;
47+
import static java.util.Objects.requireNonNull;
48+
import static java.util.concurrent.CompletableFuture.completedFuture;
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public class CallDistributedProcedureSplitSource
51+
implements ConnectorSplitSource
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{
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private CloseableIterator<FileScanTask> fileScanTaskIterator;
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private Optional<Consumer<FileScanTask>> fileScanTaskConsumer;
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56+
private final TableScan tableScan;
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private final Closer closer = Closer.create();
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private final double minimumAssignedSplitWeight;
59+
private final ConnectorSession session;
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public CallDistributedProcedureSplitSource(
62+
ConnectorSession session,
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TableScan tableScan,
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CloseableIterable<FileScanTask> fileScanTaskIterable,
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Optional<Consumer<FileScanTask>> fileScanTaskConsumer,
66+
double minimumAssignedSplitWeight)
67+
{
68+
this.session = requireNonNull(session, "session is null");
69+
this.tableScan = requireNonNull(tableScan, "tableScan is null");
70+
this.fileScanTaskIterator = fileScanTaskIterable.iterator();
71+
this.fileScanTaskConsumer = requireNonNull(fileScanTaskConsumer, "fileScanTaskConsumer is null");
72+
this.minimumAssignedSplitWeight = minimumAssignedSplitWeight;
73+
closer.register(fileScanTaskIterator);
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}
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@Override
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public CompletableFuture<ConnectorSplitBatch> getNextBatch(ConnectorPartitionHandle partitionHandle, int maxSize)
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{
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// TODO: move this to a background thread
80+
List<ConnectorSplit> splits = new ArrayList<>();
81+
Iterator<FileScanTask> iterator = limit(fileScanTaskIterator, maxSize);
82+
while (iterator.hasNext()) {
83+
FileScanTask task = iterator.next();
84+
fileScanTaskConsumer.ifPresent(consumer -> consumer.accept(task));
85+
splits.add(toIcebergSplit(task));
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}
87+
return completedFuture(new ConnectorSplitBatch(splits, isFinished()));
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}
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90+
@Override
91+
public boolean isFinished()
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{
93+
return !fileScanTaskIterator.hasNext();
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}
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@Override
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public void close()
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{
99+
try {
100+
closer.close();
101+
// TODO: remove this after org.apache.iceberg.io.CloseableIterator'withClose
102+
// correct release resources holds by iterator.
103+
fileScanTaskIterator = CloseableIterator.empty();
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}
105+
catch (IOException e) {
106+
throw new UncheckedIOException(e);
107+
}
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}
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110+
private ConnectorSplit toIcebergSplit(FileScanTask task)
111+
{
112+
PartitionSpec spec = task.spec();
113+
Optional<PartitionData> partitionData = partitionDataFromStructLike(spec, task.file().partition());
114+
115+
// TODO: We should leverage residual expression and convert that to TupleDomain.
116+
// The predicate here is used by readers for predicate push down at reader level,
117+
// so when we do not use residual expression, we are just wasting CPU cycles
118+
// on reader side evaluating a condition that we know will always be true.
119+
120+
return new IcebergSplit(
121+
task.file().path().toString(),
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task.start(),
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task.length(),
124+
fromIcebergFileFormat(task.file().format()),
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ImmutableList.of(),
126+
getPartitionKeys(task),
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PartitionSpecParser.toJson(spec),
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partitionData.map(PartitionData::toJson),
129+
getNodeSelectionStrategy(session),
130+
SplitWeight.fromProportion(Math.min(Math.max((double) task.length() / tableScan.targetSplitSize(), minimumAssignedSplitWeight), 1.0)),
131+
task.deletes().stream().map(DeleteFile::fromIceberg).collect(toImmutableList()),
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Optional.empty(),
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getDataSequenceNumber(task.file()));
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}
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}

‎presto-iceberg/src/main/java/com/facebook/presto/iceberg/IcebergAbstractMetadata.java‎

Lines changed: 79 additions & 13 deletions
Original file line numberDiff line numberDiff line change
@@ -15,6 +15,7 @@
1515

1616
import com.facebook.airlift.json.JsonCodec;
1717
import com.facebook.airlift.log.Logger;
18+
import com.facebook.presto.common.QualifiedObjectName;
1819
import com.facebook.presto.common.Subfield;
1920
import com.facebook.presto.common.predicate.TupleDomain;
2021
import com.facebook.presto.common.type.BigintType;
@@ -27,10 +28,13 @@
2728
import com.facebook.presto.iceberg.changelog.ChangelogUtil;
2829
import com.facebook.presto.spi.ColumnHandle;
2930
import com.facebook.presto.spi.ColumnMetadata;
31+
import com.facebook.presto.spi.ConnectorDistributedProcedureHandle;
32+
import com.facebook.presto.spi.ConnectorId;
3033
import com.facebook.presto.spi.ConnectorInsertTableHandle;
3134
import com.facebook.presto.spi.ConnectorNewTableLayout;
3235
import com.facebook.presto.spi.ConnectorOutputTableHandle;
3336
import com.facebook.presto.spi.ConnectorSession;
37+
import com.facebook.presto.spi.ConnectorSplitSource;
3438
import com.facebook.presto.spi.ConnectorTableHandle;
3539
import com.facebook.presto.spi.ConnectorTableLayout;
3640
import com.facebook.presto.spi.ConnectorTableLayoutHandle;
@@ -47,6 +51,9 @@
4751
import com.facebook.presto.spi.connector.ConnectorOutputMetadata;
4852
import com.facebook.presto.spi.connector.ConnectorTableVersion;
4953
import com.facebook.presto.spi.function.StandardFunctionResolution;
54+
import com.facebook.presto.spi.procedure.DistributedProcedure;
55+
import com.facebook.presto.spi.procedure.IProcedureRegistry;
56+
import com.facebook.presto.spi.procedure.Procedure;
5057
import com.facebook.presto.spi.relation.RowExpression;
5158
import com.facebook.presto.spi.relation.RowExpressionService;
5259
import com.facebook.presto.spi.statistics.ColumnStatisticMetadata;
@@ -70,6 +77,7 @@
7077
import org.apache.iceberg.FileFormat;
7178
import org.apache.iceberg.FileMetadata;
7279
import org.apache.iceberg.FileScanTask;
80+
import org.apache.iceberg.ManifestFile;
7381
import org.apache.iceberg.PartitionField;
7482
import org.apache.iceberg.PartitionSpec;
7583
import org.apache.iceberg.PartitionSpecParser;
@@ -161,23 +169,26 @@ public abstract class IcebergAbstractMetadata
161169
implements ConnectorMetadata
162170
{
163171
protected final TypeManager typeManager;
172+
protected final IProcedureRegistry procedureRegistry;
164173
protected final JsonCodec<CommitTaskData> commitTaskCodec;
165174
protected final NodeVersion nodeVersion;
166175
protected final RowExpressionService rowExpressionService;
167-
protected Transaction transaction;
176+
protected IcebergTransactionContext transactionContext;
168177

169178
private final StandardFunctionResolution functionResolution;
170179
private final ConcurrentMap<SchemaTableName, Table> icebergTables = new ConcurrentHashMap<>();
171180
private static final Logger log = Logger.get(IcebergAbstractMetadata.class);
172181

173182
public IcebergAbstractMetadata(
174183
TypeManager typeManager,
184+
IProcedureRegistry procedureRegistry,
175185
StandardFunctionResolution functionResolution,
176186
RowExpressionService rowExpressionService,
177187
JsonCodec<CommitTaskData> commitTaskCodec,
178188
NodeVersion nodeVersion)
179189
{
180190
this.typeManager = requireNonNull(typeManager, "typeManager is null");
191+
this.procedureRegistry = requireNonNull(procedureRegistry, "procedureRegistry is null");
181192
this.commitTaskCodec = requireNonNull(commitTaskCodec, "commitTaskCodec is null");
182193
this.functionResolution = requireNonNull(functionResolution, "functionResolution is null");
183194
this.rowExpressionService = requireNonNull(rowExpressionService, "rowExpressionService is null");
@@ -199,6 +210,11 @@ protected final Table getIcebergTable(ConnectorSession session, SchemaTableName
199210

200211
public abstract void unregisterTable(ConnectorSession clientSession, SchemaTableName schemaTableName);
201212

213+
public Optional<ConnectorSplitSource> getSplitSourceInCurrentCallProcedureTransaction()
214+
{
215+
return transactionContext == null ? Optional.empty() : transactionContext.getConnectorSplitSource();
216+
}
217+
202218
/**
203219
* This class implements the default implementation for getTableLayoutForConstraint which will be used in the case of a Java Worker
204220
*/
@@ -428,7 +444,7 @@ public Optional<ConnectorOutputMetadata> finishCreateTable(ConnectorSession sess
428444

429445
protected ConnectorInsertTableHandle beginIcebergTableInsert(IcebergTableHandle table, Table icebergTable)
430446
{
431-
transaction = icebergTable.newTransaction();
447+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
432448

433449
return new IcebergWritableTableHandle(
434450
table.getSchemaName(),
@@ -445,12 +461,13 @@ protected ConnectorInsertTableHandle beginIcebergTableInsert(IcebergTableHandle
445461
public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session, ConnectorInsertTableHandle insertHandle, Collection<Slice> fragments, Collection<ComputedStatistics> computedStatistics)
446462
{
447463
if (fragments.isEmpty()) {
448-
transaction.commitTransaction();
464+
transactionContext.getTransaction().commitTransaction();
465+
transactionContext.destroy();
449466
return Optional.empty();
450467
}
451468

452469
IcebergWritableTableHandle table = (IcebergWritableTableHandle) insertHandle;
453-
Table icebergTable = transaction.table();
470+
Table icebergTable = transactionContext.getTransaction().table();
454471

455472
List<CommitTaskData> commitTasks = fragments.stream()
456473
.map(slice -> commitTaskCodec.fromJson(slice.getBytes()))
@@ -461,7 +478,7 @@ public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session,
461478
icebergTable.schema().findType(field.sourceId())))
462479
.toArray(Type[]::new);
463480

464-
AppendFiles appendFiles = transaction.newFastAppend();
481+
AppendFiles appendFiles = transactionContext.getTransaction().newFastAppend();
465482
for (CommitTaskData task : commitTasks) {
466483
DataFiles.Builder builder = DataFiles.builder(icebergTable.spec())
467484
.withPath(task.getPath())
@@ -479,7 +496,8 @@ public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session,
479496
}
480497

481498
appendFiles.commit();
482-
transaction.commitTransaction();
499+
transactionContext.getTransaction().commitTransaction();
500+
transactionContext.destroy();
483501

484502
return Optional.of(new HiveWrittenPartitions(commitTasks.stream()
485503
.map(CommitTaskData::getPath)
@@ -770,6 +788,44 @@ public void truncateTable(ConnectorSession session, ConnectorTableHandle tableHa
770788
}
771789
}
772790

791+
@Override
792+
public ConnectorDistributedProcedureHandle beginCallDistributedProcedure(
793+
ConnectorSession session,
794+
QualifiedObjectName procedureName,
795+
ConnectorTableLayoutHandle tableLayoutHandle,
796+
Object[] arguments)
797+
{
798+
IcebergTableHandle handle = ((IcebergTableLayoutHandle) tableLayoutHandle).getTable();
799+
Table icebergTable = getIcebergTable(session, handle.getSchemaTableName());
800+
801+
if (handle.isSnapshotSpecified()) {
802+
throw new PrestoException(NOT_SUPPORTED, "This connector do not allow table execute at specified snapshot");
803+
}
804+
805+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
806+
Procedure procedure = procedureRegistry.resolve(
807+
new ConnectorId(procedureName.getCatalogName()),
808+
new SchemaTableName(
809+
procedureName.getSchemaName(),
810+
procedureName.getObjectName()));
811+
verify(procedure instanceof DistributedProcedure, "procedure must be DistributedProcedure");
812+
return ((DistributedProcedure) procedure).getBeginCallDistributedProcedure().begin(session, transactionContext, tableLayoutHandle, arguments);
813+
}
814+
815+
@Override
816+
public void finishCallDistributedProcedure(ConnectorSession session, ConnectorDistributedProcedureHandle tableHandle, QualifiedObjectName procedureName, Collection<Slice> fragments)
817+
{
818+
Procedure procedure = procedureRegistry.resolve(
819+
new ConnectorId(procedureName.getCatalogName()),
820+
new SchemaTableName(
821+
procedureName.getSchemaName(),
822+
procedureName.getObjectName()));
823+
verify(procedure instanceof DistributedProcedure, "procedure must be DistributedProcedure");
824+
((DistributedProcedure) procedure).getFinishCallDistributedProcedure().finish(transactionContext, tableHandle, fragments);
825+
transactionContext.getTransaction().commitTransaction();
826+
transactionContext.destroy();
827+
}
828+
773829
@Override
774830
public ConnectorTableHandle beginDelete(ConnectorSession session, ConnectorTableHandle tableHandle)
775831
{
@@ -790,7 +846,7 @@ public ConnectorTableHandle beginDelete(ConnectorSession session, ConnectorTable
790846
}
791847

792848
validateTableMode(session, icebergTable);
793-
transaction = icebergTable.newTransaction();
849+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
794850

795851
return handle;
796852
}
@@ -801,7 +857,7 @@ public void finishDelete(ConnectorSession session, ConnectorTableHandle tableHan
801857
IcebergTableHandle handle = (IcebergTableHandle) tableHandle;
802858
Table icebergTable = getIcebergTable(session, handle.getSchemaTableName());
803859

804-
RowDelta rowDelta = transaction.newRowDelta();
860+
RowDelta rowDelta = transactionContext.getTransaction().newRowDelta();
805861

806862
List<CommitTaskData> commitTasks = fragments.stream()
807863
.map(slice -> commitTaskCodec.fromJson(slice.getBytes()))
@@ -838,7 +894,8 @@ public void finishDelete(ConnectorSession session, ConnectorTableHandle tableHan
838894
}
839895

840896
rowDelta.commit();
841-
transaction.commitTransaction();
897+
transactionContext.getTransaction().commitTransaction();
898+
transactionContext.destroy();
842899
}
843900

844901
@Override
@@ -872,7 +929,15 @@ public boolean supportsMetadataDelete(ConnectorSession session, ConnectorTableHa
872929
Table icebergTable = getIcebergTable(session, handle.getSchemaTableName());
873930

874931
boolean supportsMetadataDelete = true;
875-
for (PartitionSpec spec : icebergTable.specs().values()) {
932+
// Get partition specs that really need to be checked
933+
Set<PartitionSpec> partitionSpecs = handle.getIcebergTableName().getSnapshotId().map(
934+
snapshot -> icebergTable.snapshot(snapshot).allManifests(icebergTable.io()).stream()
935+
.map(ManifestFile::partitionSpecId)
936+
.map(icebergTable.specs()::get)
937+
.collect(toImmutableSet()))
938+
.orElseGet(() -> ImmutableSet.copyOf(icebergTable.specs().values())); // No snapshot, so no data. This case doesn't matter.
939+
940+
for (PartitionSpec spec : partitionSpecs) {
876941
// Currently we do not support delete when any partition columns in predicate is not transform by identity()
877942
Set<Integer> partitionColumnSourceIds = spec.fields().stream()
878943
.filter(field -> field.transform().isIdentity())
@@ -928,15 +993,16 @@ public OptionalLong metadataDelete(ConnectorSession session, ConnectorTableHandl
928993
*/
929994
private long removeScanFiles(Table icebergTable, Iterable<FileScanTask> scan)
930995
{
931-
transaction = icebergTable.newTransaction();
932-
DeleteFiles deletes = transaction.newDelete();
996+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
997+
DeleteFiles deletes = transactionContext.getTransaction().newDelete();
933998
AtomicLong rowsDeleted = new AtomicLong(0L);
934999
scan.forEach(t -> {
9351000
deletes.deleteFile(t.file());
9361001
rowsDeleted.addAndGet(t.estimatedRowsCount());
9371002
});
9381003
deletes.commit();
939-
transaction.commitTransaction();
1004+
transactionContext.getTransaction().commitTransaction();
1005+
transactionContext.destroy();
9401006
return rowsDeleted.get();
9411007
}
9421008

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