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HDFS-14535. The default 8KB buffer in requestFileDescriptors#Buffered… #899

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Merged
merged 1 commit into from
Jun 4, 2019
Merged

HDFS-14535. The default 8KB buffer in requestFileDescriptors#Buffered… #899

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3 changes: 2 additions & 1 deletion ...doop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/BlockReaderFactory.java
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,7 @@
@InterfaceAudience.Private
public class BlockReaderFactory implements ShortCircuitReplicaCreator {
static final Logger LOG = LoggerFactory.getLogger(BlockReaderFactory.class);
private static final int SMALL_BUFFER_SIZE = 512;

public static class FailureInjector {
public void injectRequestFileDescriptorsFailure() throws IOException {
Expand Down Expand Up @@ -582,7 +583,7 @@ private ShortCircuitReplicaInfo requestFileDescriptors(DomainPeer peer,
Slot slot) throws IOException {
ShortCircuitCache cache = clientContext.getShortCircuitCache();
final DataOutputStream out =
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream()));
new DataOutputStream(new BufferedOutputStream(peer.getOutputStream(), SMALL_BUFFER_SIZE));
SlotId slotId = slot == null ? null : slot.getSlotId();
new Sender(out).requestShortCircuitFds(block, token, slotId, 1,
failureInjector.getSupportsReceiptVerification());
Expand Down