siddharthaDevineni opened a new pull request, #19456:
URL: https://github.com/apache/kafka/pull/19456
We experienced an outage in our application due to a built up Kafka lag,
which we eventually discovered to be the problem with Kafka Clients being
throttled.
Even when using the confluent cluster, the dashboard does point to exceeding
the quota of the principal.
It will be nice, if the log message on the client side is a WARNING. This
helps those who don't have visibility to cluster, and just look at the problem
from the client side, setup alerts etc. (instead of enabling TRACE to figure
out where the problem is)
NetworkClient#maybeThrottle in the class NetworkClient:
Changed from:
`log.trace("Connection to node {} is throttled for {} ms until timestamp
{}", nodeId, throttleTimeMs, now + throttleTimeMs); `
to
`log.warn("Connection to node {} is throttled for {} ms until timestamp
{}", nodeId, throttleTimeMs, now + throttleTimeMs);`
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