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HDFS-17337. RPC RESPONSE time seems not exactly accurate when using FSEditLogAsync. #6439

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Merged
merged 1 commit into from
Jan 18, 2024
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HDFS-17337. RPC RESPONSE time seems not exactly accurate when using FSEditLogAsync. #6439

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7 changes: 3 additions & 4 deletions hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1089,7 +1089,10 @@ public final void sendResponse() throws IOException {
int count = responseWaitCount.decrementAndGet();
assert count >= 0 : "response has already been sent";
if (count == 0) {
long startNanos = Time.monotonicNowNanos();
doResponse(null);
getProcessingDetails().set(Timing.RESPONSE,
Time.monotonicNowNanos() - startNanos, TimeUnit.NANOSECONDS);
}
}

Expand Down Expand Up @@ -1257,14 +1260,10 @@ public Void run() throws Exception {
deltaNanos -= details.get(Timing.LOCKSHARED, TimeUnit.NANOSECONDS);
deltaNanos -= details.get(Timing.LOCKEXCLUSIVE, TimeUnit.NANOSECONDS);
details.set(Timing.LOCKFREE, deltaNanos, TimeUnit.NANOSECONDS);
startNanos = Time.monotonicNowNanos();

setResponseFields(value, responseParams);
sendResponse();

details.setReturnStatus(responseParams.returnStatus);
deltaNanos = Time.monotonicNowNanos() - startNanos;
details.set(Timing.RESPONSE, deltaNanos, TimeUnit.NANOSECONDS);
} else {
LOG.debug("Deferring response for callId: {}", this.callId);
}
Expand Down