siddharthteotia commented on a change in pull request #8105:
URL: https://github.com/apache/pinot/pull/8105#discussion_r797303905
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File path:
pinot-core/src/main/java/org/apache/pinot/core/transport/QueryRouter.java
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@@ -119,22 +120,31 @@ public AsyncQueryResponse submitQuery(long requestId,
String rawTableName,
ServerRoutingInstance serverRoutingInstance = entry.getKey();
ServerChannels serverChannels = serverRoutingInstance.isTlsEnabled() ?
_serverChannelsTls : _serverChannels;
try {
- serverChannels.sendRequest(rawTableName, asyncQueryResponse,
serverRoutingInstance, entry.getValue(),
- timeoutMs);
+ serverChannels
+ .sendRequest(rawTableName, asyncQueryResponse,
serverRoutingInstance, entry.getValue(), timeoutMs);
asyncQueryResponse.markRequestSubmitted(serverRoutingInstance);
+ } catch (TimeoutException e) {
+ _brokerMetrics.addMeteredTableValue(rawTableName,
BrokerMeter.REQUEST_CHANNEL_LOCK_TIMEOUT_EXCEPTIONS, 1);
Review comment:
There are 3 sendRequest() in ServerChannels.
- public API at ServerChannels level
- internal API at ServerChannel level where lock is attempted
- internal API called by previous one which is invoked after lock is acquired
The one that will throw the Timeout exception while waiting to acquire
channel lock is the 2nd one. If for some reason, 3rd one throws
TimeoutException as well or let's say someone makes a code change for it to
throw TimeoutException, we won't be able to distinguish the reason here because
we are not checking the message.
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