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Posted to commits@pinot.apache.org by GitBox <gi...@apache.org> on 2022/06/02 00:09:37 UTC
[GitHub] [pinot] Jackie-Jiang commented on a diff in pull request #8708: Dedup config
Jackie-Jiang commented on code in PR #8708:
URL: https://github.com/apache/pinot/pull/8708#discussion_r887385795
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/dedup/PartitionDedupMetadataManager.java:
##########
@@ -0,0 +1,154 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pinot.segment.local.dedup;
+
+import com.google.common.annotations.VisibleForTesting;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import org.apache.helix.HelixManager;
+import org.apache.pinot.common.metrics.ServerGauge;
+import org.apache.pinot.common.metrics.ServerMetrics;
+import org.apache.pinot.segment.local.segment.readers.PinotSegmentColumnReader;
+import org.apache.pinot.segment.local.utils.HashUtils;
+import org.apache.pinot.segment.local.utils.RecordInfo;
+import org.apache.pinot.segment.local.utils.tablestate.TableState;
+import org.apache.pinot.segment.spi.IndexSegment;
+import org.apache.pinot.spi.config.table.HashFunction;
+import org.apache.pinot.spi.data.readers.PrimaryKey;
+import org.apache.pinot.spi.utils.ByteArray;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class PartitionDedupMetadataManager {
+ private static final Logger LOGGER = LoggerFactory.getLogger(PartitionDedupMetadataManager.class);
+
+ private final HelixManager _helixManager;
+ private final String _tableNameWithType;
+ private final List<String> _primaryKeyColumns;
+ private final int _partitionId;
+ private final ServerMetrics _serverMetrics;
+ private final HashFunction _hashFunction;
+ private boolean _allSegmentsLoaded;
+
+ // TODO(saurabh) : We can replace this with a ocncurrent Set
+ @VisibleForTesting
+ final ConcurrentHashMap<Object, IndexSegment> _primaryKeySet = new ConcurrentHashMap<>();
Review Comment:
```suggestion
final ConcurrentHashMap<Object, IndexSegment> _primaryKeyToSegmentMap = new ConcurrentHashMap<>();
```
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/dedup/PartitionDedupMetadataManager.java:
##########
@@ -0,0 +1,154 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pinot.segment.local.dedup;
+
+import com.google.common.annotations.VisibleForTesting;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import org.apache.helix.HelixManager;
+import org.apache.pinot.common.metrics.ServerGauge;
+import org.apache.pinot.common.metrics.ServerMetrics;
+import org.apache.pinot.segment.local.segment.readers.PinotSegmentColumnReader;
+import org.apache.pinot.segment.local.utils.HashUtils;
+import org.apache.pinot.segment.local.utils.RecordInfo;
+import org.apache.pinot.segment.local.utils.tablestate.TableState;
+import org.apache.pinot.segment.spi.IndexSegment;
+import org.apache.pinot.spi.config.table.HashFunction;
+import org.apache.pinot.spi.data.readers.PrimaryKey;
+import org.apache.pinot.spi.utils.ByteArray;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class PartitionDedupMetadataManager {
+ private static final Logger LOGGER = LoggerFactory.getLogger(PartitionDedupMetadataManager.class);
+
+ private final HelixManager _helixManager;
+ private final String _tableNameWithType;
+ private final List<String> _primaryKeyColumns;
+ private final int _partitionId;
+ private final ServerMetrics _serverMetrics;
+ private final HashFunction _hashFunction;
+ private boolean _allSegmentsLoaded;
+
+ // TODO(saurabh) : We can replace this with a ocncurrent Set
Review Comment:
(minor) Remove this TODO
##########
pinot-segment-local/src/test/resources/data/test_dedup_data.json:
##########
@@ -0,0 +1,22 @@
+[
+ {
+ "event_id": "aa",
+ "description" : "first",
+ "secondsSinceEpoch": 1567205394
+ },
+ {
+ "event_id": "bb",
+ "description" : "first",
+ "secondsSinceEpoch": 1567205396
+ },
+ {
+ "event_id": "aa",
+ "description" : "second",
+ "secondsSinceEpoch": 1567205397
+ },
+ {
+ "event_id": "bb",
+ "description" : "second",
+ "secondsSinceEpoch": 1567205392
+ }
+]
Review Comment:
(nit) empty line
##########
pinot-core/src/main/java/org/apache/pinot/core/data/manager/realtime/LLRealtimeSegmentDataManager.java:
##########
@@ -538,6 +539,7 @@ private void processStreamEvents(MessageBatch messagesAndOffsets, long idlePipeS
}
for (GenericRow transformedRow : reusedResult.getTransformedRows()) {
try {
+ // TODO(saurabh): we may have dropped the record due to dedup. Should we increment indexedMessageCount?
Review Comment:
(minor) Since we already track the dropped records, we can remove this TODO and consider changing it to a comment
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/indexsegment/mutable/MutableSegmentImpl.java:
##########
@@ -477,8 +482,22 @@ public boolean index(GenericRow row, @Nullable RowMetadata rowMetadata)
throws IOException {
boolean canTakeMore;
int numDocsIndexed = _numDocsIndexed;
+
+ RecordInfo recordInfo = null;
+
+ if (isDedupEnabled() || isUpsertEnabled()) {
+ recordInfo = getRecordInfo(row, numDocsIndexed);
+ }
+
+ if (isDedupEnabled() && _partitionDedupMetadataManager.checkRecordPresentOrUpdate(recordInfo, this)) {
+ _logger.info("Dropped row {} since its primary key already exists", row);
+ if (_serverMetrics != null) {
+ _serverMetrics.addMeteredTableValue(_realtimeTableName, ServerMeter.REALTIME_DEDUP_DROPPED, 1);
+ }
+ return numDocsIndexed < _capacity;
Review Comment:
(minor)
```suggestion
return true;
```
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/dedup/PartitionDedupMetadataManager.java:
##########
@@ -0,0 +1,154 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pinot.segment.local.dedup;
+
+import com.google.common.annotations.VisibleForTesting;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import org.apache.helix.HelixManager;
+import org.apache.pinot.common.metrics.ServerGauge;
+import org.apache.pinot.common.metrics.ServerMetrics;
+import org.apache.pinot.segment.local.segment.readers.PinotSegmentColumnReader;
+import org.apache.pinot.segment.local.utils.HashUtils;
+import org.apache.pinot.segment.local.utils.RecordInfo;
+import org.apache.pinot.segment.local.utils.tablestate.TableState;
+import org.apache.pinot.segment.spi.IndexSegment;
+import org.apache.pinot.spi.config.table.HashFunction;
+import org.apache.pinot.spi.data.readers.PrimaryKey;
+import org.apache.pinot.spi.utils.ByteArray;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class PartitionDedupMetadataManager {
+ private static final Logger LOGGER = LoggerFactory.getLogger(PartitionDedupMetadataManager.class);
+
+ private final HelixManager _helixManager;
+ private final String _tableNameWithType;
+ private final List<String> _primaryKeyColumns;
+ private final int _partitionId;
+ private final ServerMetrics _serverMetrics;
+ private final HashFunction _hashFunction;
+ private boolean _allSegmentsLoaded;
+
+ // TODO(saurabh) : We can replace this with a ocncurrent Set
+ @VisibleForTesting
+ final ConcurrentHashMap<Object, IndexSegment> _primaryKeySet = new ConcurrentHashMap<>();
+
+ public PartitionDedupMetadataManager(HelixManager helixManager, String tableNameWithType,
+ List<String> primaryKeyColumns, int partitionId, ServerMetrics serverMetrics, HashFunction hashFunction) {
+ _helixManager = helixManager;
+ _tableNameWithType = tableNameWithType;
+ _primaryKeyColumns = primaryKeyColumns;
+ _partitionId = partitionId;
+ _serverMetrics = serverMetrics;
+ _hashFunction = hashFunction;
+ }
+
+ public void addSegment(IndexSegment segment) {
+ // Add all PKs to _primaryKeySet
+ Iterator<RecordInfo> recordInfoIterator = getRecordInfoIterator(segment, _primaryKeyColumns);
+ while (recordInfoIterator.hasNext()) {
+ RecordInfo recordInfo = recordInfoIterator.next();
+ _primaryKeySet.put(HashUtils.hashPrimaryKey(recordInfo.getPrimaryKey(), _hashFunction), segment);
+ }
+ _serverMetrics.setValueOfPartitionGauge(_tableNameWithType, _partitionId, ServerGauge.DEDUP_PRIMARY_KEYS_COUNT,
+ _primaryKeySet.size());
+ }
+
+ public void removeSegment(IndexSegment segment) {
+ // TODO(saurabh): Explain reload scenario here
+ Iterator<RecordInfo> recordInfoIterator = getRecordInfoIterator(segment, _primaryKeyColumns);
+ while (recordInfoIterator.hasNext()) {
+ RecordInfo recordInfo = recordInfoIterator.next();
+ _primaryKeySet.compute(HashUtils.hashPrimaryKey(recordInfo.getPrimaryKey(), _hashFunction),
+ (primaryKey, currentSegment) -> {
+ if (currentSegment == segment) {
+ return null;
+ } else {
+ return currentSegment;
+ }
+ });
+ }
+ _serverMetrics.setValueOfPartitionGauge(_tableNameWithType, _partitionId, ServerGauge.DEDUP_PRIMARY_KEYS_COUNT,
+ _primaryKeySet.size());
+ }
+
+ @VisibleForTesting
+ public static Iterator<RecordInfo> getRecordInfoIterator(IndexSegment segment, List<String> primaryKeyColumns) {
Review Comment:
Suggest returning an iterator of `PrimaryKey`. For dedup, we don't need the docId and comparisonValue information from the `RecordInfo`. Similar for the `checkRecordPresentOrUpdate()` which can just take the `PrimaryKey` object. This is not a blocker, so maybe put a TODO and address it later
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/indexsegment/mutable/MutableSegmentImpl.java:
##########
@@ -477,8 +482,22 @@ public boolean index(GenericRow row, @Nullable RowMetadata rowMetadata)
throws IOException {
boolean canTakeMore;
int numDocsIndexed = _numDocsIndexed;
+
+ RecordInfo recordInfo = null;
+
+ if (isDedupEnabled() || isUpsertEnabled()) {
+ recordInfo = getRecordInfo(row, numDocsIndexed);
+ }
+
+ if (isDedupEnabled() && _partitionDedupMetadataManager.checkRecordPresentOrUpdate(recordInfo, this)) {
+ _logger.info("Dropped row {} since its primary key already exists", row);
Review Comment:
Don't log anything here, it can flood the log
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/tablestate/TableState.java:
##########
@@ -0,0 +1,99 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pinot.segment.local.utils.tablestate;
+
+import java.util.Map;
+import org.apache.helix.HelixDataAccessor;
+import org.apache.helix.HelixManager;
+import org.apache.helix.PropertyKey;
+import org.apache.helix.model.CurrentState;
+import org.apache.helix.model.IdealState;
+import org.apache.helix.model.LiveInstance;
+import org.apache.pinot.spi.utils.CommonConstants;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class TableState {
Review Comment:
(minor) Let's rename it to `TableStateUtils`
##########
pinot-segment-local/src/test/resources/data/test_dedup_schema.json:
##########
@@ -0,0 +1,21 @@
+{
+ "schemaName": "test_pinot_table",
+ "dimensionFieldSpecs": [
+ {
+ "name": "event_id",
+ "dataType": "STRING"
+ },
+ {
+ "name": "description",
+ "dataType": "STRING"
+ }
+ ],
+ "timeFieldSpec": {
+ "incomingGranularitySpec": {
+ "name": "secondsSinceEpoch",
+ "dataType": "LONG",
+ "timeType": "SECONDS"
+ }
+ },
+ "primaryKeyColumns": ["event_id"]
+}
Review Comment:
(nit) empty line
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/dedup/PartitionDedupMetadataManager.java:
##########
@@ -0,0 +1,154 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.pinot.segment.local.dedup;
+
+import com.google.common.annotations.VisibleForTesting;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import org.apache.helix.HelixManager;
+import org.apache.pinot.common.metrics.ServerGauge;
+import org.apache.pinot.common.metrics.ServerMetrics;
+import org.apache.pinot.segment.local.segment.readers.PinotSegmentColumnReader;
+import org.apache.pinot.segment.local.utils.HashUtils;
+import org.apache.pinot.segment.local.utils.RecordInfo;
+import org.apache.pinot.segment.local.utils.tablestate.TableState;
+import org.apache.pinot.segment.spi.IndexSegment;
+import org.apache.pinot.spi.config.table.HashFunction;
+import org.apache.pinot.spi.data.readers.PrimaryKey;
+import org.apache.pinot.spi.utils.ByteArray;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class PartitionDedupMetadataManager {
+ private static final Logger LOGGER = LoggerFactory.getLogger(PartitionDedupMetadataManager.class);
+
+ private final HelixManager _helixManager;
+ private final String _tableNameWithType;
+ private final List<String> _primaryKeyColumns;
+ private final int _partitionId;
+ private final ServerMetrics _serverMetrics;
+ private final HashFunction _hashFunction;
+ private boolean _allSegmentsLoaded;
+
+ // TODO(saurabh) : We can replace this with a ocncurrent Set
+ @VisibleForTesting
+ final ConcurrentHashMap<Object, IndexSegment> _primaryKeySet = new ConcurrentHashMap<>();
+
+ public PartitionDedupMetadataManager(HelixManager helixManager, String tableNameWithType,
+ List<String> primaryKeyColumns, int partitionId, ServerMetrics serverMetrics, HashFunction hashFunction) {
+ _helixManager = helixManager;
+ _tableNameWithType = tableNameWithType;
+ _primaryKeyColumns = primaryKeyColumns;
+ _partitionId = partitionId;
+ _serverMetrics = serverMetrics;
+ _hashFunction = hashFunction;
+ }
+
+ public void addSegment(IndexSegment segment) {
+ // Add all PKs to _primaryKeySet
+ Iterator<RecordInfo> recordInfoIterator = getRecordInfoIterator(segment, _primaryKeyColumns);
+ while (recordInfoIterator.hasNext()) {
+ RecordInfo recordInfo = recordInfoIterator.next();
+ _primaryKeySet.put(HashUtils.hashPrimaryKey(recordInfo.getPrimaryKey(), _hashFunction), segment);
+ }
+ _serverMetrics.setValueOfPartitionGauge(_tableNameWithType, _partitionId, ServerGauge.DEDUP_PRIMARY_KEYS_COUNT,
+ _primaryKeySet.size());
+ }
+
+ public void removeSegment(IndexSegment segment) {
+ // TODO(saurabh): Explain reload scenario here
+ Iterator<RecordInfo> recordInfoIterator = getRecordInfoIterator(segment, _primaryKeyColumns);
+ while (recordInfoIterator.hasNext()) {
+ RecordInfo recordInfo = recordInfoIterator.next();
+ _primaryKeySet.compute(HashUtils.hashPrimaryKey(recordInfo.getPrimaryKey(), _hashFunction),
+ (primaryKey, currentSegment) -> {
+ if (currentSegment == segment) {
+ return null;
+ } else {
+ return currentSegment;
+ }
+ });
+ }
+ _serverMetrics.setValueOfPartitionGauge(_tableNameWithType, _partitionId, ServerGauge.DEDUP_PRIMARY_KEYS_COUNT,
+ _primaryKeySet.size());
+ }
+
+ @VisibleForTesting
+ public static Iterator<RecordInfo> getRecordInfoIterator(IndexSegment segment, List<String> primaryKeyColumns) {
+ Map<String, PinotSegmentColumnReader> columnToReaderMap = new HashMap<>();
+ for (String primaryKeyColumn : primaryKeyColumns) {
+ columnToReaderMap.put(primaryKeyColumn, new PinotSegmentColumnReader(segment, primaryKeyColumn));
+ }
+ int numTotalDocs = segment.getSegmentMetadata().getTotalDocs();
+ int numPrimaryKeyColumns = primaryKeyColumns.size();
+ return new Iterator<RecordInfo>() {
+ private int _docId = 0;
+
+ @Override
+ public boolean hasNext() {
+ return _docId < numTotalDocs;
+ }
+
+ @Override
+ public RecordInfo next() {
+ Object[] values = new Object[numPrimaryKeyColumns];
+ for (int i = 0; i < numPrimaryKeyColumns; i++) {
+ Object value = columnToReaderMap.get(primaryKeyColumns.get(i)).getValue(_docId);
+ if (value instanceof byte[]) {
+ value = new ByteArray((byte[]) value);
+ }
+ values[i] = value;
+ }
+ PrimaryKey primaryKey = new PrimaryKey(values);
+ return new RecordInfo(primaryKey, _docId++, null);
+ }
+ };
+ }
+
+ private synchronized void waitTillAllSegmentsLoaded() {
+ while (!TableState.isAllSegmentsLoaded(_helixManager, _tableNameWithType)) {
+ LOGGER.info("Sleeping 1 second waiting for all segments loaded for partial-upsert table: {}", _tableNameWithType);
+ try {
+ //noinspection BusyWait
+ Thread.sleep(1000L);
+ } catch (InterruptedException e) {
+ throw new RuntimeException(e);
+ }
+ }
+ _allSegmentsLoaded = true;
+ }
+
+ public boolean checkRecordPresentOrUpdate(RecordInfo recordInfo, IndexSegment indexSegment) {
+ if (!_allSegmentsLoaded) {
Review Comment:
Let's move the if check into the `waitTillAllSegmentsLoaded()` for thread safety. It is single threaded now, but in case that changes
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