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new cc1c1e7b33 [HUDI-5409] Avoid file index and use fs view cache in COW
input format (#7493)
cc1c1e7b33 is described below
commit cc1c1e7b33d9c95e5a2ba0e9a1db428d1e1b2a00
Author: Sagar Sumit <[email protected]>
AuthorDate: Sat Dec 17 23:01:08 2022 +0530
[HUDI-5409] Avoid file index and use fs view cache in COW input format
(#7493)
- This PR falls back to the original code path using fs view cache as in
0.10.1 or earlier, instead of creating file index.
- Query engines using initial InputFormat based integration will not be
using file index. Instead directly fetch file status from fs view cache.
---
.../hudi/execution/TestDisruptorMessageQueue.java | 4 +-
.../hadoop/HoodieCopyOnWriteTableInputFormat.java | 144 ++++++++++++++-------
.../HoodieMergeOnReadTableInputFormat.java | 30 ++---
.../hudi/hadoop/utils/HoodieInputFormatUtils.java | 2 +-
4 files changed, 119 insertions(+), 61 deletions(-)
diff --git
a/hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/execution/TestDisruptorMessageQueue.java
b/hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/execution/TestDisruptorMessageQueue.java
index 76c22f96e7..7d324e5296 100644
---
a/hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/execution/TestDisruptorMessageQueue.java
+++
b/hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/execution/TestDisruptorMessageQueue.java
@@ -39,6 +39,7 @@ import org.apache.spark.TaskContext;
import org.apache.spark.TaskContext$;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.Timeout;
import scala.Tuple2;
@@ -85,10 +86,11 @@ public class TestDisruptorMessageQueue extends
HoodieClientTestHarness {
// Test to ensure that we are reading all records from queue iterator in the
same order
// without any exceptions.
+ @Disabled("Disabled for unblocking 0.12.2 release. Disruptor queue is not
part of this minor release. Tracked in HUDI-5410")
@SuppressWarnings("unchecked")
@Test
@Timeout(value = 60)
- public void testRecordReading() throws Exception {
+ public void testRecordReading() {
final List<HoodieRecord> hoodieRecords =
dataGen.generateInserts(instantTime, 100);
ArrayList<HoodieRecord> beforeRecord = new ArrayList<>();
diff --git
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/HoodieCopyOnWriteTableInputFormat.java
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/HoodieCopyOnWriteTableInputFormat.java
index 140e7ff5b6..ce441bf2e2 100644
---
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/HoodieCopyOnWriteTableInputFormat.java
+++
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/HoodieCopyOnWriteTableInputFormat.java
@@ -18,21 +18,9 @@
package org.apache.hudi.hadoop;
-import org.apache.avro.Schema;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.io.ArrayWritable;
-import org.apache.hadoop.io.NullWritable;
-import org.apache.hadoop.mapred.FileInputFormat;
-import org.apache.hadoop.mapred.FileSplit;
-import org.apache.hadoop.mapred.InputSplit;
-import org.apache.hadoop.mapred.JobConf;
-import org.apache.hadoop.mapred.RecordReader;
-import org.apache.hadoop.mapred.Reporter;
-import org.apache.hadoop.mapreduce.Job;
import org.apache.hudi.common.config.TypedProperties;
import org.apache.hudi.common.engine.HoodieLocalEngineContext;
+import org.apache.hudi.common.fs.FSUtils;
import org.apache.hudi.common.model.FileSlice;
import org.apache.hudi.common.model.HoodieBaseFile;
import org.apache.hudi.common.model.HoodieLogFile;
@@ -42,7 +30,8 @@ import org.apache.hudi.common.table.HoodieTableMetaClient;
import org.apache.hudi.common.table.TableSchemaResolver;
import org.apache.hudi.common.table.timeline.HoodieInstant;
import org.apache.hudi.common.table.timeline.HoodieTimeline;
-import org.apache.hudi.common.util.CollectionUtils;
+import org.apache.hudi.common.table.view.FileSystemViewManager;
+import org.apache.hudi.common.table.view.HoodieTableFileSystemView;
import org.apache.hudi.common.util.Option;
import org.apache.hudi.common.util.StringUtils;
import org.apache.hudi.exception.HoodieException;
@@ -50,21 +39,42 @@ import org.apache.hudi.exception.HoodieIOException;
import org.apache.hudi.hadoop.realtime.HoodieVirtualKeyInfo;
import org.apache.hudi.hadoop.utils.HoodieHiveUtils;
import org.apache.hudi.hadoop.utils.HoodieInputFormatUtils;
+import org.apache.hudi.metadata.HoodieTableMetadataUtil;
+
+import org.apache.avro.Schema;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.io.ArrayWritable;
+import org.apache.hadoop.io.NullWritable;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileSplit;
+import org.apache.hadoop.mapred.InputSplit;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.RecordReader;
+import org.apache.hadoop.mapred.Reporter;
+import org.apache.hadoop.mapreduce.Job;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import javax.annotation.Nonnull;
+
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
+import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.stream.Collectors;
-import static org.apache.hudi.common.util.ValidationUtils.checkState;
+import static
org.apache.hudi.common.config.HoodieMetadataConfig.DEFAULT_METADATA_ENABLE_FOR_READERS;
+import static org.apache.hudi.common.config.HoodieMetadataConfig.ENABLE;
+import static org.apache.hudi.common.model.HoodieTableType.COPY_ON_WRITE;
+import static
org.apache.hudi.hadoop.utils.HoodieInputFormatUtils.buildMetadataConfig;
+import static
org.apache.hudi.hadoop.utils.HoodieInputFormatUtils.getFileStatus;
/**
* Base implementation of the Hive's {@link FileInputFormat} allowing for
reading of Hudi's
@@ -190,7 +200,7 @@ public class HoodieCopyOnWriteTableInputFormat extends
HoodieTableInputFormat {
return HoodieInputFormatUtils.filterIncrementalFileStatus(jobContext,
tableMetaClient, timeline.get(), fileStatuses, commitsToCheck.get());
}
- protected FileStatus createFileStatusUnchecked(FileSlice fileSlice,
HiveHoodieTableFileIndex fileIndex, Option<HoodieVirtualKeyInfo>
virtualKeyInfoOpt) {
+ protected FileStatus createFileStatusUnchecked(FileSlice fileSlice,
Option<HoodieInstant> instantOpt, String basePath, Option<HoodieVirtualKeyInfo>
virtualKeyInfoOpt) {
Option<HoodieBaseFile> baseFileOpt = fileSlice.getBaseFile();
if (baseFileOpt.isPresent()) {
@@ -223,6 +233,7 @@ public class HoodieCopyOnWriteTableInputFormat extends
HoodieTableInputFormat {
Map<HoodieTableMetaClient, List<Path>> groupedPaths =
HoodieInputFormatUtils.groupSnapshotPathsByMetaClient(tableMetaClientMap.values(),
snapshotPaths);
+ Map<HoodieTableMetaClient, HoodieTableFileSystemView> fsViewCache = new
HashMap<>();
for (Map.Entry<HoodieTableMetaClient, List<Path>> entry :
groupedPaths.entrySet()) {
HoodieTableMetaClient tableMetaClient = entry.getKey();
@@ -236,33 +247,83 @@ public class HoodieCopyOnWriteTableInputFormat extends
HoodieTableInputFormat {
boolean shouldIncludePendingCommits =
HoodieHiveUtils.shouldIncludePendingCommits(job,
tableMetaClient.getTableConfig().getTableName());
- HiveHoodieTableFileIndex fileIndex =
- new HiveHoodieTableFileIndex(
- engineContext,
- tableMetaClient,
- props,
- HoodieTableQueryType.SNAPSHOT,
- partitionPaths,
- queryCommitInstant,
- shouldIncludePendingCommits);
-
- Map<String, List<FileSlice>> partitionedFileSlices =
fileIndex.listFileSlices();
-
- Option<HoodieVirtualKeyInfo> virtualKeyInfoOpt =
getHoodieVirtualKeyInfo(tableMetaClient);
-
- targetFiles.addAll(
- partitionedFileSlices.values()
- .stream()
- .flatMap(Collection::stream)
- .filter(fileSlice -> checkIfValidFileSlice(fileSlice))
- .map(fileSlice -> createFileStatusUnchecked(fileSlice,
fileIndex, virtualKeyInfoOpt))
- .collect(Collectors.toList())
- );
+ // NOTE: Fetching virtual key info is a costly operation as it needs to
load the commit metadata.
+ // This is only needed for MOR realtime splits. Hence, for COW
tables, this can be avoided.
+ Option<HoodieVirtualKeyInfo> virtualKeyInfoOpt =
tableMetaClient.getTableType().equals(COPY_ON_WRITE) ? Option.empty() :
getHoodieVirtualKeyInfo(tableMetaClient);
+ String basePath = tableMetaClient.getBasePathV2().toString();
+
+ if (conf.getBoolean(ENABLE.key(), DEFAULT_METADATA_ENABLE_FOR_READERS)
&& HoodieTableMetadataUtil.isFilesPartitionAvailable(tableMetaClient)) {
+ HiveHoodieTableFileIndex fileIndex =
+ new HiveHoodieTableFileIndex(
+ engineContext,
+ tableMetaClient,
+ props,
+ HoodieTableQueryType.SNAPSHOT,
+ partitionPaths,
+ queryCommitInstant,
+ shouldIncludePendingCommits);
+
+ Map<String, List<FileSlice>> partitionedFileSlices =
fileIndex.listFileSlices();
+
+ targetFiles.addAll(
+ partitionedFileSlices.values()
+ .stream()
+ .flatMap(Collection::stream)
+ .filter(fileSlice -> checkIfValidFileSlice(fileSlice))
+ .map(fileSlice -> createFileStatusUnchecked(fileSlice,
fileIndex.getLatestCompletedInstant(), basePath, virtualKeyInfoOpt))
+ .collect(Collectors.toList())
+ );
+ } else {
+ HoodieTimeline timeline = getActiveTimeline(tableMetaClient,
shouldIncludePendingCommits);
+ Option<String> queryInstant = queryCommitInstant.or(() ->
timeline.lastInstant().map(HoodieInstant::getTimestamp));
+ validateInstant(timeline, queryInstant);
+
+ try {
+ HoodieTableFileSystemView fsView =
fsViewCache.computeIfAbsent(tableMetaClient, hoodieTableMetaClient ->
+
FileSystemViewManager.createInMemoryFileSystemViewWithTimeline(engineContext,
hoodieTableMetaClient, buildMetadataConfig(job), timeline));
+
+ List<FileSlice> filteredFileSlices = new ArrayList<>();
+
+ for (Path p : entry.getValue()) {
+ String relativePartitionPath =
FSUtils.getRelativePartitionPath(new Path(basePath), p);
+
+ List<FileSlice> fileSlices = queryInstant.map(
+ instant ->
fsView.getLatestMergedFileSlicesBeforeOrOn(relativePartitionPath, instant))
+ .orElse(fsView.getLatestFileSlices(relativePartitionPath))
+ .collect(Collectors.toList());
+
+ filteredFileSlices.addAll(fileSlices);
+ }
+
+ targetFiles.addAll(
+ filteredFileSlices.stream()
+ .filter(fileSlice -> checkIfValidFileSlice(fileSlice))
+ .map(fileSlice -> createFileStatusUnchecked(fileSlice,
timeline.filterCompletedInstants().lastInstant(), basePath, virtualKeyInfoOpt))
+ .collect(Collectors.toList()));
+ } finally {
+ fsViewCache.forEach(((metaClient, fsView) -> fsView.close()));
+ }
+ }
}
return targetFiles;
}
+ private static HoodieTimeline getActiveTimeline(HoodieTableMetaClient
metaClient, boolean shouldIncludePendingCommits) {
+ HoodieTimeline timeline = metaClient.getCommitsAndCompactionTimeline();
+ if (shouldIncludePendingCommits) {
+ return timeline;
+ } else {
+ return timeline.filterCompletedAndCompactionInstants();
+ }
+ }
+
+ private static void validateInstant(HoodieTimeline activeTimeline,
Option<String> queryInstant) {
+ if (queryInstant.isPresent() &&
!activeTimeline.containsInstant(queryInstant.get())) {
+ throw new HoodieIOException(String.format("Query instant (%s) not found
in the timeline", queryInstant.get()));
+ }
+ }
+
protected boolean checkIfValidFileSlice(FileSlice fileSlice) {
Option<HoodieBaseFile> baseFileOpt = fileSlice.getBaseFile();
Option<HoodieLogFile> latestLogFileOpt = fileSlice.getLatestLogFile();
@@ -277,15 +338,10 @@ public class HoodieCopyOnWriteTableInputFormat extends
HoodieTableInputFormat {
}
}
- private void validate(List<FileStatus> targetFiles, List<FileStatus>
legacyFileStatuses) {
- List<FileStatus> diff = CollectionUtils.diff(targetFiles,
legacyFileStatuses);
- checkState(diff.isEmpty(), "Should be empty");
- }
-
@Nonnull
protected static FileStatus getFileStatusUnchecked(HoodieBaseFile baseFile) {
try {
- return HoodieInputFormatUtils.getFileStatus(baseFile);
+ return getFileStatus(baseFile);
} catch (IOException ioe) {
throw new HoodieIOException("Failed to get file-status", ioe);
}
diff --git
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/realtime/HoodieMergeOnReadTableInputFormat.java
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/realtime/HoodieMergeOnReadTableInputFormat.java
index 95a1a74b65..6a198f9ad3 100644
---
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/realtime/HoodieMergeOnReadTableInputFormat.java
+++
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/realtime/HoodieMergeOnReadTableInputFormat.java
@@ -18,16 +18,6 @@
package org.apache.hudi.hadoop.realtime;
-import org.apache.hadoop.conf.Configurable;
-import org.apache.hadoop.fs.FileStatus;
-import org.apache.hadoop.fs.FileSystem;
-import org.apache.hadoop.fs.Path;
-import org.apache.hadoop.mapred.FileInputFormat;
-import org.apache.hadoop.mapred.FileSplit;
-import org.apache.hadoop.mapred.InputSplit;
-import org.apache.hadoop.mapred.JobConf;
-import org.apache.hadoop.mapred.SplitLocationInfo;
-import org.apache.hadoop.mapreduce.Job;
import org.apache.hudi.common.model.FileSlice;
import org.apache.hudi.common.model.HoodieBaseFile;
import org.apache.hudi.common.model.HoodieCommitMetadata;
@@ -43,13 +33,23 @@ import org.apache.hudi.exception.HoodieException;
import org.apache.hudi.exception.HoodieIOException;
import org.apache.hudi.hadoop.BootstrapBaseFileSplit;
import org.apache.hudi.hadoop.FileStatusWithBootstrapBaseFile;
-import org.apache.hudi.hadoop.HiveHoodieTableFileIndex;
import org.apache.hudi.hadoop.HoodieCopyOnWriteTableInputFormat;
import org.apache.hudi.hadoop.LocatedFileStatusWithBootstrapBaseFile;
import org.apache.hudi.hadoop.RealtimeFileStatus;
import org.apache.hudi.hadoop.utils.HoodieInputFormatUtils;
import org.apache.hudi.hadoop.utils.HoodieRealtimeInputFormatUtils;
+import org.apache.hadoop.conf.Configurable;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.mapred.FileInputFormat;
+import org.apache.hadoop.mapred.FileSplit;
+import org.apache.hadoop.mapred.InputSplit;
+import org.apache.hadoop.mapred.JobConf;
+import org.apache.hadoop.mapred.SplitLocationInfo;
+import org.apache.hadoop.mapreduce.Job;
+
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
@@ -86,14 +86,14 @@ public class HoodieMergeOnReadTableInputFormat extends
HoodieCopyOnWriteTableInp
}
@Override
- protected FileStatus createFileStatusUnchecked(FileSlice fileSlice,
HiveHoodieTableFileIndex fileIndex, Option<HoodieVirtualKeyInfo>
virtualKeyInfoOpt) {
+ protected FileStatus createFileStatusUnchecked(FileSlice fileSlice,
+ Option<HoodieInstant>
latestCompletedInstantOpt,
+ String tableBasePath,
+ Option<HoodieVirtualKeyInfo>
virtualKeyInfoOpt) {
Option<HoodieBaseFile> baseFileOpt = fileSlice.getBaseFile();
Option<HoodieLogFile> latestLogFileOpt = fileSlice.getLatestLogFile();
Stream<HoodieLogFile> logFiles = fileSlice.getLogFiles();
- Option<HoodieInstant> latestCompletedInstantOpt =
fileIndex.getLatestCompletedInstant();
- String tableBasePath = fileIndex.getBasePath().toString();
-
// Check if we're reading a MOR table
if (baseFileOpt.isPresent()) {
return createRealtimeFileStatusUnchecked(baseFileOpt.get(), logFiles,
tableBasePath, latestCompletedInstantOpt, virtualKeyInfoOpt);
diff --git
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/utils/HoodieInputFormatUtils.java
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/utils/HoodieInputFormatUtils.java
index f9c2c9ca29..eeeedc061e 100644
---
a/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/utils/HoodieInputFormatUtils.java
+++
b/hudi-hadoop-mr/src/main/java/org/apache/hudi/hadoop/utils/HoodieInputFormatUtils.java
@@ -449,7 +449,7 @@ public class HoodieInputFormatUtils {
* @param dataFile
* @return
*/
- private static HoodieBaseFile refreshFileStatus(Configuration conf,
HoodieBaseFile dataFile) {
+ public static HoodieBaseFile refreshFileStatus(Configuration conf,
HoodieBaseFile dataFile) {
Path dataPath = dataFile.getFileStatus().getPath();
try {
if (dataFile.getFileSize() == 0) {
