Bump response header timeout for proxying list request (#10420)

cmd/endpoint.go

@@ -753,9 +753,17 @@ func GetProxyEndpoints(endpointZones EndpointZones) ([]ProxyEndpoint, error) {
 					RootCAs:    globalRootCAs,
 				}
 			}
+
+			tr := newCustomHTTPTransport(tlsConfig, rest.DefaultRESTTimeout)()
+			// Allow more requests to be in flight with higher response header timeout.
+			tr.ResponseHeaderTimeout = 30 * time.Minute
+			tr.MaxConnsPerHost = 256
+			tr.MaxIdleConnsPerHost = 16
+			tr.MaxIdleConns = 256
+
 			proxyEps = append(proxyEps, ProxyEndpoint{
 				Endpoint:  endpoint,
-				Transport: newCustomHTTPTransport(tlsConfig, rest.DefaultRESTTimeout)(),
+				Transport: tr,
 			})
 		}
 	}

cmd/erasure-common.go

@@ -34,6 +34,22 @@ func (er erasureObjects) getLoadBalancedLocalDisks() (newDisks []StorageAPI) {
 	return newDisks
 }
 
+// getLoadBalancedNDisks - fetches load balanced (sufficiently randomized) disk slice with N disks online
+func (er erasureObjects) getLoadBalancedNDisks(ndisks int) (newDisks []StorageAPI) {
+	disks := er.getLoadBalancedDisks()
+	for _, disk := range disks {
+		if disk == nil {
+			continue
+		}
+		newDisks = append(newDisks, disk)
+		ndisks--
+		if ndisks == 0 {
+			break
+		}
+	}
+	return
+}
+
 // getLoadBalancedDisks - fetches load balanced (sufficiently randomized) disk slice.
 func (er erasureObjects) getLoadBalancedDisks() (newDisks []StorageAPI) {
 	disks := er.getDisks()

cmd/erasure-sets.go

@@ -961,7 +961,7 @@ func lexicallySortedEntryVersions(entryChs []FileInfoVersionsCh, entries []FileI
 }
 
 func (s *erasureSets) startMergeWalks(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}) []FileInfoCh {
-	return s.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, -1)
+	return s.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, -1, false)
 }
 
 func (s *erasureSets) startMergeWalksVersions(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}) []FileInfoVersionsCh {
@@ -972,90 +972,64 @@ func (s *erasureSets) startMergeWalksVersions(ctx context.Context, bucket, prefi
 // FileInfoCh which can be read from.
 func (s *erasureSets) startMergeWalksVersionsN(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}, ndisks int) []FileInfoVersionsCh {
 	var entryChs []FileInfoVersionsCh
-	var success int
+	var wg sync.WaitGroup
+	var mutex sync.Mutex
 	for _, set := range s.sets {
 		// Reset for the next erasure set.
-		success = ndisks
-		for _, disk := range set.getLoadBalancedDisks() {
-			if disk == nil {
-				// Disk can be offline
-				continue
-			}
+		for _, disk := range set.getLoadBalancedNDisks(ndisks) {
+			wg.Add(1)
+			go func(disk StorageAPI) {
+				defer wg.Done()
 				entryCh, err := disk.WalkVersions(GlobalContext, bucket, prefix, marker, recursive, endWalkCh)
 				if err != nil {
-				logger.LogIf(ctx, err)
-				// Disk walk returned error, ignore it.
-				continue
+					return
 				}
+
+				mutex.Lock()
 				entryChs = append(entryChs, FileInfoVersionsCh{
 					Ch: entryCh,
 				})
-			success--
-			if success == 0 {
-				break
-			}
+				mutex.Unlock()
+			}(disk)
 		}
 	}
+	wg.Wait()
 	return entryChs
 }
 
 // Starts a walk channel across n number of disks and returns a slice of
 // FileInfoCh which can be read from.
-func (s *erasureSets) startMergeWalksN(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}, ndisks int) []FileInfoCh {
+func (s *erasureSets) startMergeWalksN(ctx context.Context, bucket, prefix, marker string, recursive bool, endWalkCh <-chan struct{}, ndisks int, splunk bool) []FileInfoCh {
 	var entryChs []FileInfoCh
-	var success int
+	var wg sync.WaitGroup
+	var mutex sync.Mutex
 	for _, set := range s.sets {
 		// Reset for the next erasure set.
-		success = ndisks
-		for _, disk := range set.getLoadBalancedDisks() {
-			if disk == nil {
-				// Disk can be offline
-				continue
-			}
-			entryCh, err := disk.Walk(GlobalContext, bucket, prefix, marker, recursive, endWalkCh)
-			if err != nil {
-				// Disk walk returned error, ignore it.
-				continue
-			}
-			entryChs = append(entryChs, FileInfoCh{
-				Ch: entryCh,
-			})
-			success--
-			if success == 0 {
-				break
-			}
-		}
-	}
-	return entryChs
-}
+		for _, disk := range set.getLoadBalancedNDisks(ndisks) {
+			wg.Add(1)
+			go func(disk StorageAPI) {
+				defer wg.Done()
 
-// Starts a walk channel across n number of disks and returns a slice of
-// FileInfo channels which can be read from.
-func (s *erasureSets) startSplunkMergeWalksN(ctx context.Context, bucket, prefix, marker string, endWalkCh <-chan struct{}, ndisks int) []FileInfoCh {
-	var entryChs []FileInfoCh
-	var success int
-	for _, set := range s.sets {
-		// Reset for the next erasure set.
-		success = ndisks
-		for _, disk := range set.getLoadBalancedDisks() {
-			if disk == nil {
-				// Disk can be offline
-				continue
+				var entryCh chan FileInfo
+				var err error
+				if splunk {
+					entryCh, err = disk.WalkSplunk(GlobalContext, bucket, prefix, marker, endWalkCh)
+				} else {
+					entryCh, err = disk.Walk(GlobalContext, bucket, prefix, marker, recursive, endWalkCh)
 				}
-			entryCh, err := disk.WalkSplunk(GlobalContext, bucket, prefix, marker, endWalkCh)
 				if err != nil {
 					// Disk walk returned error, ignore it.
-				continue
+					return
 				}
+				mutex.Lock()
 				entryChs = append(entryChs, FileInfoCh{
 					Ch: entryCh,
 				})
-			success--
-			if success == 0 {
-				break
-			}
+				mutex.Unlock()
+			}(disk)
 		}
 	}
+	wg.Wait()
 	return entryChs
 }
 

cmd/erasure-zones.go

@@ -697,7 +697,7 @@ func (z *erasureZones) listObjectsNonSlash(ctx context.Context, bucket, prefix,
 
 	for _, zone := range z.zones {
 		zonesEntryChs = append(zonesEntryChs,
-			zone.startMergeWalksN(ctx, bucket, prefix, "", true, endWalkCh, zone.listTolerancePerSet))
+			zone.startMergeWalksN(ctx, bucket, prefix, "", true, endWalkCh, zone.listTolerancePerSet, false))
 		zonesListTolerancePerSet = append(zonesListTolerancePerSet, zone.listTolerancePerSet)
 	}
 
@@ -816,7 +816,7 @@ func (z *erasureZones) listObjectsSplunk(ctx context.Context, bucket, prefix, ma
 		entryChs, endWalkCh := zone.poolSplunk.Release(listParams{bucket, recursive, marker, prefix})
 		if entryChs == nil {
 			endWalkCh = make(chan struct{})
-			entryChs = zone.startSplunkMergeWalksN(ctx, bucket, prefix, marker, endWalkCh, zone.listTolerancePerSet)
+			entryChs = zone.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, zone.listTolerancePerSet, true)
 		}
 		zonesEntryChs = append(zonesEntryChs, entryChs)
 		zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)
@@ -908,7 +908,7 @@ func (z *erasureZones) listObjects(ctx context.Context, bucket, prefix, marker,
 		entryChs, endWalkCh := zone.pool.Release(listParams{bucket, recursive, marker, prefix})
 		if entryChs == nil {
 			endWalkCh = make(chan struct{})
-			entryChs = zone.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, zone.listTolerancePerSet)
+			entryChs = zone.startMergeWalksN(ctx, bucket, prefix, marker, recursive, endWalkCh, zone.listTolerancePerSet, false)
 		}
 		zonesEntryChs = append(zonesEntryChs, entryChs)
 		zonesEndWalkCh = append(zonesEndWalkCh, endWalkCh)