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[#1863] fix(server): Fail commitShuffle when write Operation Fails #1866

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[#1863] fix(server): Fail commitShuffle when write Operation Fails #1866

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d5cf356
[#1863] fix(server): Update Comitted Block Ids Even if Storage Manage…
sahibamatta Jul 5, 2024
ed4bafc
Fail commitShuffle when flush event write fails
sahibamatta Jul 16, 2024
2cbde7f
Merge branch 'master' into issue-1863
sahibamatta Jul 16, 2024
5a8404d
Add removed file
sahibamatta Jul 16, 2024
525cac6
sync
sahibamatta Jul 16, 2024
402bf31
Update writeError, not throw exception in constructor
sahibamatta Jul 16, 2024
98b00f7
Handle write errors separately for each shuffle id
sahibamatta Jul 19, 2024
9264997
Add UT to test commitFail on Write Fail
sahibamatta Jul 19, 2024
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32 changes: 26 additions & 6 deletions server/src/main/java/org/apache/uniffle/server/ShuffleFlushManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,7 @@
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicLong;

import com.google.common.annotations.VisibleForTesting;
Expand Down Expand Up @@ -64,13 +65,15 @@ public class ShuffleFlushManager {
// appId -> shuffleId -> committed shuffle blockIds
private Map<String, Map<Integer, Roaring64NavigableMap>> committedBlockIds =
JavaUtils.newConcurrentMap();
private List<Integer> shuffleIdsWithWriteError = new CopyOnWriteArrayList<>();
private final int retryMax;

private final StorageManager storageManager;
private final long pendingEventTimeoutSec;
private FlushEventHandler eventHandler;
private final boolean isAuditLogEnabled;


public ShuffleFlushManager(
ShuffleServerConf shuffleServerConf,
ShuffleServer shuffleServer,
Expand Down Expand Up @@ -168,12 +171,20 @@ public void processFlushEvent(ShuffleDataFlushEvent event) throws Exception {
storageDataReplica,
user,
maxConcurrencyPerPartitionToWrite);
ShuffleWriteHandler handler = storage.getOrCreateWriteHandler(request);
long startTime = System.currentTimeMillis();
boolean writeSuccess = storageManager.write(storage, handler, event);
if (!writeSuccess) {
throw new EventRetryException();

long startTime = 0L;
try {
ShuffleWriteHandler handler = storage.getOrCreateWriteHandler(request);
startTime = System.currentTimeMillis();
boolean writeSuccess = storageManager.write(storage, handler, event);
if (!writeSuccess) {
shuffleIdsWithWriteError.add(event.getShuffleId());
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@rickyma rickyma Jul 22, 2024 •
edited
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I don't think this is thread-safe.

It could be overwritten by other threads which may be successful.

You need to reconsider concurrency problems through this PR.

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@sahibamatta sahibamatta Oct 1, 2024

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Apologies for the delayed response, but here I used CopyOnWriteArrayList for implementing shuffleIdsWithWriteError, do you still think thread safety is a concern here, or do you think the other parts of the code are not thread safe?

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@rickyma rickyma Oct 3, 2024

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Please help to review this.Thx.@maobaolong

}
} catch (Exception e) {
LOG.error("storageManager write error.", e);
shuffleIdsWithWriteError.add(event.getShuffleId());
}

long endTime = System.currentTimeMillis();

// update some metrics for shuffle task
Expand Down Expand Up @@ -243,7 +254,11 @@ private void updateCommittedBlockIds(
}
}

public Roaring64NavigableMap getCommittedBlockIds(String appId, Integer shuffleId) {
public Roaring64NavigableMap getCommittedBlockIds(String appId, Integer shuffleId) throws EventDiscardException {
if (shuffleIdsWithWriteError.contains(shuffleId)) {
throw new EventDiscardException();
}

Map<Integer, Roaring64NavigableMap> shuffleIdToBlockIds = committedBlockIds.get(appId);
if (shuffleIdToBlockIds == null) {
LOG.warn("Unexpected value when getCommittedBlockIds for appId[" + appId + "]");
Expand Down Expand Up @@ -299,4 +314,9 @@ public ShuffleDataDistributionType getDataDistributionType(String appId) {
public FlushEventHandler getEventHandler() {
return eventHandler;
}

@VisibleForTesting
public void setShuffleIdsWithWriteError(int shuffleId) {
shuffleIdsWithWriteError.add(shuffleId);
}
}
49 changes: 49 additions & 0 deletions server/src/test/java/org/apache/uniffle/server/ShuffleTaskManagerTest.java
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.uniffle.server.flush.EventDiscardException;
import org.awaitility.Awaitility;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
Expand Down Expand Up @@ -75,6 +76,7 @@
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;

Expand Down Expand Up @@ -1048,6 +1050,53 @@ public void checkAndClearLeakShuffleDataTest(@TempDir File tempDir) throws Excep
assertTrue(hiddenFile.exists());
}

@Test
public void testCommitShuffleFailOnWriteFail() throws Exception {
String confFile = ClassLoader.getSystemResource("server.conf").getFile();
ShuffleServerConf conf = new ShuffleServerConf(confFile);
final String remoteStorage = HDFS_URI + "rss/test";
final String appId = "testAppId";
final int shuffleId = 1;
conf.set(ShuffleServerConf.SERVER_BUFFER_CAPACITY, 128L);
conf.set(ShuffleServerConf.SERVER_MEMORY_SHUFFLE_HIGHWATERMARK_PERCENTAGE, 50.0);
conf.set(ShuffleServerConf.SERVER_MEMORY_SHUFFLE_LOWWATERMARK_PERCENTAGE, 0.0);
conf.setString(ShuffleServerConf.RSS_STORAGE_TYPE.key(), StorageType.HDFS.name());
conf.set(ShuffleServerConf.RSS_TEST_MODE_ENABLE, true);
conf.set(ShuffleServerConf.SERVER_COMMIT_TIMEOUT, 10000L);
conf.set(ShuffleServerConf.SERVER_PRE_ALLOCATION_EXPIRED, 3000L);
conf.set(ShuffleServerConf.HEALTH_CHECK_ENABLE, false);
shuffleServer = new ShuffleServer(conf);
ShuffleTaskManager shuffleTaskManager = shuffleServer.getShuffleTaskManager();
shuffleTaskManager.registerShuffle(
appId,
shuffleId,
Lists.newArrayList(new PartitionRange(1, 1)),
new RemoteStorageInfo(remoteStorage),
StringUtils.EMPTY);
shuffleTaskManager.registerShuffle(
appId,
shuffleId,
Lists.newArrayList(new PartitionRange(2, 2)),
new RemoteStorageInfo(remoteStorage),
StringUtils.EMPTY);
final List<ShufflePartitionedBlock> expectedBlocks1 = Lists.newArrayList();
final List<ShufflePartitionedBlock> expectedBlocks2 = Lists.newArrayList();
final Map<Long, PreAllocatedBufferInfo> bufferIds = shuffleTaskManager.getRequireBufferIds();

shuffleTaskManager.requireBuffer(10);
shuffleTaskManager.requireBuffer(10);
shuffleTaskManager.requireBuffer(10);
assertEquals(3, bufferIds.size());
// required buffer should be clear if it doesn't receive data after timeout
Thread.sleep(6000);
assertEquals(0, bufferIds.size());

ShuffleFlushManager shuffleFlushManager = shuffleServer.getShuffleFlushManager();
shuffleFlushManager.setShuffleIdsWithWriteError(shuffleId);

assertThrows(EventDiscardException.class, () -> shuffleTaskManager.commitShuffle(appId, shuffleId));
}

private Set<String> getAppIdsOnDisk(LocalStorageManager localStorageManager) {
Set<String> appIdsOnDisk = new HashSet<>();

Expand Down