Jackie-Jiang commented on a change in pull request #8083:
URL: https://github.com/apache/pinot/pull/8083#discussion_r796100819
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/transport/ServerChannels.java
##########
@@ -139,22 +143,32 @@ private void attachSSLHandler(SocketChannel ch) {
}
}
- synchronized void sendRequest(String rawTableName, AsyncQueryResponse
asyncQueryResponse,
- ServerRoutingInstance serverRoutingInstance, InstanceRequest
instanceRequest)
+ private void sendRequestOrTimeOut(String rawTableName, AsyncQueryResponse
asyncQueryResponse,
+ ServerRoutingInstance serverRoutingInstance, byte[] requestBytes, long
timeoutMs)
+ throws Exception {
+ if (_channelLock.tryLock(timeoutMs, TimeUnit.MILLISECONDS)) {
+ try {
+ sendRequest(rawTableName, asyncQueryResponse, serverRoutingInstance,
requestBytes);
+ } finally {
+ _channelLock.unlock();
+ }
+ }
Review comment:
(major) Throw timeout exception if it fails to acquire the lock
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/transport/ServerChannels.java
##########
@@ -139,22 +143,32 @@ private void attachSSLHandler(SocketChannel ch) {
}
}
- synchronized void sendRequest(String rawTableName, AsyncQueryResponse
asyncQueryResponse,
- ServerRoutingInstance serverRoutingInstance, InstanceRequest
instanceRequest)
+ private void sendRequestOrTimeOut(String rawTableName, AsyncQueryResponse
asyncQueryResponse,
Review comment:
Suggest renaming it to `sendRequest`. Passing in a timeout implies that
it can time out
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/transport/ServerChannels.java
##########
@@ -94,9 +97,10 @@ public void shutDown() {
@ThreadSafe
private class ServerChannel {
- final TSerializer _serializer = new TSerializer(new
TCompactProtocol.Factory());
final ServerRoutingInstance _serverRoutingInstance;
final Bootstrap _bootstrap;
+ // lock to protect channel as requests must be written into channel
sequentially
+ private final ReentrantLock _channelLock = new ReentrantLock();
Review comment:
(minor) `private` is redundant as the whole class is private
##########
File path:
pinot-core/src/main/java/org/apache/pinot/core/transport/ServerChannels.java
##########
@@ -81,10 +83,11 @@ public ServerChannels(QueryRouter queryRouter,
BrokerMetrics brokerMetrics, TlsC
}
public void sendRequest(String rawTableName, AsyncQueryResponse
asyncQueryResponse,
- ServerRoutingInstance serverRoutingInstance, InstanceRequest
instanceRequest)
+ ServerRoutingInstance serverRoutingInstance, InstanceRequest
instanceRequest, long timeoutMs)
throws Exception {
+ byte[] requestBytes = _serializer.serialize(instanceRequest);
Review comment:
+1
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