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Retry on failure to acquire lock on remote metadata #10341

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merged 2 commits into from
Oct 4, 2023
Merged

Retry on failure to acquire lock on remote metadata #10341

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Retry on failure to acquire lock on remote metadata
Oct 3, 2023
a186d21
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Oct 4, 2023
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24 changes: 20 additions & 4 deletions server/src/main/java/org/opensearch/snapshots/SnapshotShardsService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@
import org.apache.logging.log4j.message.ParameterizedMessage;
import org.apache.lucene.index.IndexCommit;
import org.opensearch.Version;
import org.opensearch.action.admin.indices.flush.FlushRequest;
import org.opensearch.cluster.ClusterChangedEvent;
import org.opensearch.cluster.ClusterStateListener;
import org.opensearch.cluster.SnapshotsInProgress;
Expand Down Expand Up @@ -73,6 +74,7 @@
import org.opensearch.transport.TransportService;

import java.io.IOException;
import java.nio.file.NoSuchFileException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
Expand Down Expand Up @@ -401,18 +403,32 @@
try {
if (remoteStoreIndexShallowCopy && indexShard.indexSettings().isRemoteStoreEnabled()) {
long startTime = threadPool.relativeTimeInMillis();
long primaryTerm = indexShard.getOperationPrimaryTerm();
// we flush first to make sure we get the latest writes snapshotted
wrappedSnapshot = indexShard.acquireLastIndexCommitAndRefresh(true);
long primaryTerm = indexShard.getOperationPrimaryTerm();
final IndexCommit snapshotIndexCommit = wrappedSnapshot.get();
IndexCommit snapshotIndexCommit = wrappedSnapshot.get();
long commitGeneration = snapshotIndexCommit.getGeneration();
indexShard.acquireLockOnCommitData(snapshot.getSnapshotId().getUUID(), primaryTerm, commitGeneration);
try {
indexShard.acquireLockOnCommitData(snapshot.getSnapshotId().getUUID(), primaryTerm, commitGeneration);
} catch (NoSuchFileException e) {
wrappedSnapshot.close();
logger.warn(

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server/src/main/java/org/opensearch/snapshots/SnapshotShardsService.java#L413-L415 

Added lines #L413 - L415 were not covered by tests
"Exception while acquiring lock on primaryTerm = {} and generation = {}",
primaryTerm,
commitGeneration

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server/src/main/java/org/opensearch/snapshots/SnapshotShardsService.java#L417-L418 

Added lines #L417 - L418 were not covered by tests
);
indexShard.flush(new FlushRequest(shardId.getIndexName()).force(true));
wrappedSnapshot = indexShard.acquireLastIndexCommit(false);
snapshotIndexCommit = wrappedSnapshot.get();
commitGeneration = snapshotIndexCommit.getGeneration();
indexShard.acquireLockOnCommitData(snapshot.getSnapshotId().getUUID(), primaryTerm, commitGeneration);

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server/src/main/java/org/opensearch/snapshots/SnapshotShardsService.java#L420-L424 

Added lines #L420 - L424 were not covered by tests
}
try {
repository.snapshotRemoteStoreIndexShard(
indexShard.store(),
snapshot.getSnapshotId(),
indexId,
wrappedSnapshot.get(),
snapshotIndexCommit,
getShardStateId(indexShard, snapshotIndexCommit),
snapshotStatus,
primaryTerm,
Expand Down
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