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[Segment Replication] Use deterministic mechanism to have concurrent invocation of segment replication #8937

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merged 2 commits into from
Jul 28, 2023
Merged

[Segment Replication] Use deterministic mechanism to have concurrent invocation of segment replication #8937

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[Segment Replication] Use deterministic mechanism to have concurrent …
dreamer-89 Jul 27, 2023
21f3036
Clean up
dreamer-89 Jul 28, 2023
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44 changes: 43 additions & 1 deletion ...rc/test/java/org/opensearch/indices/replication/SegmentReplicationTargetServiceTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
import org.opensearch.indices.recovery.ForceSyncRequest;
import org.opensearch.indices.recovery.RecoverySettings;
import org.opensearch.indices.replication.checkpoint.ReplicationCheckpoint;
import org.opensearch.indices.replication.common.CopyState;
import org.opensearch.indices.replication.common.ReplicationCollection;
import org.opensearch.indices.replication.common.ReplicationFailedException;
import org.opensearch.indices.replication.common.ReplicationLuceneIndex;
Expand All @@ -49,6 +50,7 @@
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import static org.junit.Assert.assertEquals;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyLong;
import static org.mockito.Mockito.atLeastOnce;
Expand Down Expand Up @@ -242,7 +244,46 @@ public void testAlreadyOnNewCheckpoint() {
}

public void testShardAlreadyReplicating() {
sut.startReplication(replicaShard, mock(SegmentReplicationTargetService.SegmentReplicationListener.class));
CountDownLatch blockGetCheckpointMetadata = new CountDownLatch(1);
SegmentReplicationSource source = new TestReplicationSource() {
@Override
public void getCheckpointMetadata(
long replicationId,
ReplicationCheckpoint checkpoint,
ActionListener<CheckpointInfoResponse> listener
) {
try {
blockGetCheckpointMetadata.await();
final CopyState copyState = new CopyState(
ReplicationCheckpoint.empty(primaryShard.shardId(), primaryShard.getLatestReplicationCheckpoint().getCodec()),
primaryShard
);
listener.onResponse(
new CheckpointInfoResponse(copyState.getCheckpoint(), copyState.getMetadataMap(), copyState.getInfosBytes())
);
} catch (InterruptedException | IOException e) {
throw new RuntimeException(e);
}
}

@Override
public void getSegmentFiles(
long replicationId,
ReplicationCheckpoint checkpoint,
List<StoreFileMetadata> filesToFetch,
IndexShard indexShard,
ActionListener<GetSegmentFilesResponse> listener
) {
listener.onResponse(new GetSegmentFilesResponse(Collections.emptyList()));
}
};
final SegmentReplicationTarget target = spy(
new SegmentReplicationTarget(replicaShard, source, mock(SegmentReplicationTargetService.SegmentReplicationListener.class))
);
// Start first round of segment replication.
sut.startReplication(target);
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// Start second round of segment replication, this should fail to start as first round is still in-progress
sut.startReplication(replicaShard, new SegmentReplicationTargetService.SegmentReplicationListener() {
@Override
public void onReplicationDone(SegmentReplicationState state) {
Expand All @@ -255,6 +296,7 @@ public void onReplicationFailure(SegmentReplicationState state, ReplicationFaile
assertFalse(sendShardFailure);
}
});
blockGetCheckpointMetadata.countDown();
}

public void testOnNewCheckpointFromNewPrimaryCancelOngoingReplication() throws InterruptedException {
Expand Down
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