[jira] [Created] (KAFKA-10225) Increase default zk session timeout for system test

["Chia-Ping Tsai (Jira)" <ji...@apache.org>]

Chia-Ping Tsai created KAFKA-10225:
--------------------------------------

             Summary: Increase default zk session timeout for system test
                 Key: KAFKA-10225
                 URL: https://issues.apache.org/jira/browse/KAFKA-10225
             Project: Kafka
          Issue Type: Improvement
            Reporter: Chia-Ping Tsai
            Assignee: Chia-Ping Tsai


I'm digging in the flaky system tests and then I noticed there are many flaky caused by following check.
{code}
        with node.account.monitor_log(KafkaService.STDOUT_STDERR_CAPTURE) as monitor:
            node.account.ssh(cmd)
            # Kafka 1.0.0 and higher don't have a space between "Kafka" and "Server"
            monitor.wait_until("Kafka\s*Server.*started", timeout_sec=timeout_sec, backoff_sec=.25,
                               err_msg="Kafka server didn't finish startup in %d seconds" % timeout_sec)
{code}

And the error message in broker log is shown below.
{quote}
kafka.zookeeper.ZooKeeperClientTimeoutException: Timed out waiting for connection while in state: CONNECTING
	at kafka.zookeeper.ZooKeeperClient.waitUntilConnected(ZooKeeperClient.scala:262)
	at kafka.zookeeper.ZooKeeperClient.<init>(ZooKeeperClient.scala:119)
	at kafka.zk.KafkaZkClient$.apply(KafkaZkClient.scala:1880)
	at kafka.server.KafkaServer.createZkClient$1(KafkaServer.scala:430)
	at kafka.server.KafkaServer.initZkClient(KafkaServer.scala:455)
	at kafka.server.KafkaServer.startup(KafkaServer.scala:227)
	at kafka.server.KafkaServerStartable.startup(KafkaServerStartable.scala:44)
	at kafka.Kafka$.main(Kafka.scala:82)
	at kafka.Kafka.main(Kafka.scala)
{quote}

I'm surprised the default timeout of zk connection in system test is only 2 seconds as the default timeout in production is increased to 18s (see https://github.com/apache/kafka/commit/4bde9bb3ccaf5571be76cb96ea051dadaeeaf5c7)
{code}
config_property.ZOOKEEPER_CONNECTION_TIMEOUT_MS: 2000
{code}






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