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hantangwangdhantangwangd
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Refactor Iceberg connector to support call distributed procedure
1 parent 6eb8c40 commit cb21ff1

16 files changed

+485
-20
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
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*
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* 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;
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import com.facebook.presto.iceberg.delete.DeleteFile;
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import com.facebook.presto.spi.ConnectorSession;
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import com.facebook.presto.spi.ConnectorSplit;
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import com.facebook.presto.spi.ConnectorSplitSource;
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import com.facebook.presto.spi.SplitWeight;
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import com.facebook.presto.spi.connector.ConnectorPartitionHandle;
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import com.google.common.collect.ImmutableList;
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import com.google.common.io.Closer;
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import org.apache.iceberg.FileScanTask;
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import org.apache.iceberg.PartitionSpec;
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import org.apache.iceberg.PartitionSpecParser;
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import org.apache.iceberg.TableScan;
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import org.apache.iceberg.io.CloseableIterable;
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import org.apache.iceberg.io.CloseableIterator;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Optional;
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import java.util.concurrent.CompletableFuture;
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import java.util.function.Consumer;
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import static com.facebook.presto.hive.HiveCommonSessionProperties.getNodeSelectionStrategy;
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import static com.facebook.presto.iceberg.FileFormat.fromIcebergFileFormat;
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import static com.facebook.presto.iceberg.IcebergUtil.getDataSequenceNumber;
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import static com.facebook.presto.iceberg.IcebergUtil.getPartitionKeys;
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import static com.facebook.presto.iceberg.IcebergUtil.partitionDataFromStructLike;
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import static com.google.common.collect.ImmutableList.toImmutableList;
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import static com.google.common.collect.Iterators.limit;
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import static java.util.Objects.requireNonNull;
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import static java.util.concurrent.CompletableFuture.completedFuture;
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public class CallDistributedProcedureSplitSource
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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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private final TableScan tableScan;
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private final Closer closer = Closer.create();
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private final double minimumAssignedSplitWeight;
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private final ConnectorSession session;
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public CallDistributedProcedureSplitSource(
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ConnectorSession session,
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TableScan tableScan,
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CloseableIterable<FileScanTask> fileScanTaskIterable,
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Optional<Consumer<FileScanTask>> fileScanTaskConsumer,
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double minimumAssignedSplitWeight)
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{
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this.session = requireNonNull(session, "session is null");
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this.tableScan = requireNonNull(tableScan, "tableScan is null");
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this.fileScanTaskIterator = fileScanTaskIterable.iterator();
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this.fileScanTaskConsumer = requireNonNull(fileScanTaskConsumer, "fileScanTaskConsumer is null");
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this.minimumAssignedSplitWeight = minimumAssignedSplitWeight;
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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
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List<ConnectorSplit> splits = new ArrayList<>();
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Iterator<FileScanTask> iterator = limit(fileScanTaskIterator, maxSize);
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while (iterator.hasNext()) {
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FileScanTask task = iterator.next();
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fileScanTaskConsumer.ifPresent(consumer -> consumer.accept(task));
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splits.add(toIcebergSplit(task));
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}
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return completedFuture(new ConnectorSplitBatch(splits, isFinished()));
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}
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@Override
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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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{
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try {
100+
closer.close();
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// TODO: remove this after org.apache.iceberg.io.CloseableIterator'withClose
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// correct release resources holds by iterator.
103+
fileScanTaskIterator = CloseableIterator.empty();
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}
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catch (IOException e) {
106+
throw new UncheckedIOException(e);
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}
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}
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private ConnectorSplit toIcebergSplit(FileScanTask task)
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{
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PartitionSpec spec = task.spec();
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Optional<PartitionData> partitionData = partitionDataFromStructLike(spec, task.file().partition());
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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.
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120+
return new IcebergSplit(
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task.file().path().toString(),
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task.start(),
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task.length(),
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fromIcebergFileFormat(task.file().format()),
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ImmutableList.of(),
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getPartitionKeys(task),
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PartitionSpecParser.toJson(spec),
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partitionData.map(PartitionData::toJson),
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getNodeSelectionStrategy(session),
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SplitWeight.fromProportion(Math.min(Math.max((double) task.length() / tableScan.targetSplitSize(), minimumAssignedSplitWeight), 1.0)),
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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: 69 additions & 12 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;
@@ -160,23 +167,26 @@ public abstract class IcebergAbstractMetadata
160167
implements ConnectorMetadata
161168
{
162169
protected final TypeManager typeManager;
170+
protected final IProcedureRegistry procedureRegistry;
163171
protected final JsonCodec<CommitTaskData> commitTaskCodec;
164172
protected final NodeVersion nodeVersion;
165173
protected final RowExpressionService rowExpressionService;
166-
protected Transaction transaction;
174+
protected IcebergTransactionContext transactionContext;
167175

168176
private final StandardFunctionResolution functionResolution;
169177
private final ConcurrentMap<SchemaTableName, Table> icebergTables = new ConcurrentHashMap<>();
170178
private static final Logger log = Logger.get(IcebergAbstractMetadata.class);
171179

172180
public IcebergAbstractMetadata(
173181
TypeManager typeManager,
182+
IProcedureRegistry procedureRegistry,
174183
StandardFunctionResolution functionResolution,
175184
RowExpressionService rowExpressionService,
176185
JsonCodec<CommitTaskData> commitTaskCodec,
177186
NodeVersion nodeVersion)
178187
{
179188
this.typeManager = requireNonNull(typeManager, "typeManager is null");
189+
this.procedureRegistry = requireNonNull(procedureRegistry, "procedureRegistry is null");
180190
this.commitTaskCodec = requireNonNull(commitTaskCodec, "commitTaskCodec is null");
181191
this.functionResolution = requireNonNull(functionResolution, "functionResolution is null");
182192
this.rowExpressionService = requireNonNull(rowExpressionService, "rowExpressionService is null");
@@ -198,6 +208,11 @@ protected final Table getIcebergTable(ConnectorSession session, SchemaTableName
198208

199209
public abstract void unregisterTable(ConnectorSession clientSession, SchemaTableName schemaTableName);
200210

211+
public Optional<ConnectorSplitSource> getSplitSourceInCurrentCallProcedureTransaction()
212+
{
213+
return transactionContext == null ? Optional.empty() : transactionContext.getConnectorSplitSource();
214+
}
215+
201216
/**
202217
* This class implements the default implementation for getTableLayoutForConstraint which will be used in the case of a Java Worker
203218
*/
@@ -427,7 +442,7 @@ public Optional<ConnectorOutputMetadata> finishCreateTable(ConnectorSession sess
427442

428443
protected ConnectorInsertTableHandle beginIcebergTableInsert(IcebergTableHandle table, Table icebergTable)
429444
{
430-
transaction = icebergTable.newTransaction();
445+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
431446

432447
return new IcebergWritableTableHandle(
433448
table.getSchemaName(),
@@ -444,12 +459,13 @@ protected ConnectorInsertTableHandle beginIcebergTableInsert(IcebergTableHandle
444459
public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session, ConnectorInsertTableHandle insertHandle, Collection<Slice> fragments, Collection<ComputedStatistics> computedStatistics)
445460
{
446461
if (fragments.isEmpty()) {
447-
transaction.commitTransaction();
462+
transactionContext.getTransaction().commitTransaction();
463+
transactionContext.destroy();
448464
return Optional.empty();
449465
}
450466

451467
IcebergWritableTableHandle table = (IcebergWritableTableHandle) insertHandle;
452-
Table icebergTable = transaction.table();
468+
Table icebergTable = transactionContext.getTransaction().table();
453469

454470
List<CommitTaskData> commitTasks = fragments.stream()
455471
.map(slice -> commitTaskCodec.fromJson(slice.getBytes()))
@@ -460,7 +476,7 @@ public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session,
460476
icebergTable.schema().findType(field.sourceId())))
461477
.toArray(Type[]::new);
462478

463-
AppendFiles appendFiles = transaction.newFastAppend();
479+
AppendFiles appendFiles = transactionContext.getTransaction().newFastAppend();
464480
for (CommitTaskData task : commitTasks) {
465481
DataFiles.Builder builder = DataFiles.builder(icebergTable.spec())
466482
.withPath(task.getPath())
@@ -478,7 +494,8 @@ public Optional<ConnectorOutputMetadata> finishInsert(ConnectorSession session,
478494
}
479495

480496
appendFiles.commit();
481-
transaction.commitTransaction();
497+
transactionContext.getTransaction().commitTransaction();
498+
transactionContext.destroy();
482499

483500
return Optional.of(new HiveWrittenPartitions(commitTasks.stream()
484501
.map(CommitTaskData::getPath)
@@ -768,6 +785,44 @@ public void truncateTable(ConnectorSession session, ConnectorTableHandle tableHa
768785
removeScanFiles(icebergTable, TupleDomain.all());
769786
}
770787

788+
@Override
789+
public ConnectorDistributedProcedureHandle beginCallDistributedProcedure(
790+
ConnectorSession session,
791+
QualifiedObjectName procedureName,
792+
ConnectorTableLayoutHandle tableLayoutHandle,
793+
Object[] arguments)
794+
{
795+
IcebergTableHandle handle = ((IcebergTableLayoutHandle) tableLayoutHandle).getTable();
796+
Table icebergTable = getIcebergTable(session, handle.getSchemaTableName());
797+
798+
if (handle.isSnapshotSpecified()) {
799+
throw new PrestoException(NOT_SUPPORTED, "This connector do not allow table execute at specified snapshot");
800+
}
801+
802+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
803+
Procedure procedure = procedureRegistry.resolve(
804+
new ConnectorId(procedureName.getCatalogName()),
805+
new SchemaTableName(
806+
procedureName.getSchemaName(),
807+
procedureName.getObjectName()));
808+
verify(procedure instanceof DistributedProcedure, "procedure must be DistributedProcedure");
809+
return ((DistributedProcedure) procedure).getBeginCallDistributedProcedure().begin(session, transactionContext, tableLayoutHandle, arguments);
810+
}
811+
812+
@Override
813+
public void finishCallDistributedProcedure(ConnectorSession session, ConnectorDistributedProcedureHandle tableHandle, QualifiedObjectName procedureName, Collection<Slice> fragments)
814+
{
815+
Procedure procedure = procedureRegistry.resolve(
816+
new ConnectorId(procedureName.getCatalogName()),
817+
new SchemaTableName(
818+
procedureName.getSchemaName(),
819+
procedureName.getObjectName()));
820+
verify(procedure instanceof DistributedProcedure, "procedure must be DistributedProcedure");
821+
((DistributedProcedure) procedure).getFinishCallDistributedProcedure().finish(transactionContext, tableHandle, fragments);
822+
transactionContext.getTransaction().commitTransaction();
823+
transactionContext.destroy();
824+
}
825+
771826
@Override
772827
public ConnectorTableHandle beginDelete(ConnectorSession session, ConnectorTableHandle tableHandle)
773828
{
@@ -788,7 +843,7 @@ public ConnectorTableHandle beginDelete(ConnectorSession session, ConnectorTable
788843
}
789844

790845
validateTableMode(session, icebergTable);
791-
transaction = icebergTable.newTransaction();
846+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
792847

793848
return handle;
794849
}
@@ -799,7 +854,7 @@ public void finishDelete(ConnectorSession session, ConnectorTableHandle tableHan
799854
IcebergTableHandle handle = (IcebergTableHandle) tableHandle;
800855
Table icebergTable = getIcebergTable(session, handle.getSchemaTableName());
801856

802-
RowDelta rowDelta = transaction.newRowDelta();
857+
RowDelta rowDelta = transactionContext.getTransaction().newRowDelta();
803858

804859
List<CommitTaskData> commitTasks = fragments.stream()
805860
.map(slice -> commitTaskCodec.fromJson(slice.getBytes()))
@@ -836,7 +891,8 @@ public void finishDelete(ConnectorSession session, ConnectorTableHandle tableHan
836891
}
837892

838893
rowDelta.commit();
839-
transaction.commitTransaction();
894+
transactionContext.getTransaction().commitTransaction();
895+
transactionContext.destroy();
840896
}
841897

842898
@Override
@@ -914,11 +970,12 @@ public OptionalLong metadataDelete(ConnectorSession session, ConnectorTableHandl
914970
*/
915971
private OptionalLong removeScanFiles(Table icebergTable, TupleDomain<IcebergColumnHandle> predicate)
916972
{
917-
transaction = icebergTable.newTransaction();
918-
DeleteFiles deleteFiles = transaction.newDelete()
973+
transactionContext = new IcebergTransactionContext(Optional.of(icebergTable), icebergTable.newTransaction());
974+
DeleteFiles deleteFiles = transactionContext.getTransaction().newDelete()
919975
.deleteFromRowFilter(toIcebergExpression(predicate));
920976
deleteFiles.commit();
921-
transaction.commitTransaction();
977+
transactionContext.getTransaction().commitTransaction();
978+
transactionContext.destroy();
922979

923980
Map<String, String> summary = icebergTable.currentSnapshot().summary();
924981
long deletedRecords = Long.parseLong(summary.getOrDefault(DELETED_RECORDS_PROP, "0"));

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