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https://issues.apache.org/jira/browse/CASSANDRA-14890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jay Zhuang updated CASSANDRA-14890:
-----------------------------------
Resolution: Duplicate
Status: Resolved (was: Patch Available)
Resolve as duplication to CASSANDRA-14616.
> cassandra-stress hang for 200 seconds if `n` is not specified
> -------------------------------------------------------------
>
> Key: CASSANDRA-14890
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14890
> Project: Cassandra
> Issue Type: Bug
> Components: Stress
> Reporter: Jay Zhuang
> Assignee: Jay Zhuang
> Priority: Minor
>
> if parameter {{n}} is not specified, cassandra-stress will hang (wait) for
> 200 seconds between warm-up and sending traffic.
> For example, the following command will hang 200 seconds before sending the
> traffic:
> {noformat}
> $ ./tools/bin/cassandra-stress write
> ...
> Created keyspaces. Sleeping 1s for propagation.
> Sleeping 2s...
> Warming up WRITE with 0 iterations...
> Failed to connect over JMX; not collecting these stats
> {noformat}
> It's waiting for this:
> [https://github.com/apache/cassandra/blob/06209037ea56b5a2a49615a99f1542d6ea1b2947/tools/stress/src/org/apache/cassandra/stress/util/Uncertainty.java#L72]
> As there's no warm-up traffic (CASSANDRA-13773), it will wait until:
> {noformat}
> (measurements >= waiter.maxMeasurements)
> {noformat}
> {{maxMeasurements}} is 200 by default:
> [https://github.com/apache/cassandra/blob/06209037ea56b5a2a49615a99f1542d6ea1b2947/tools/stress/src/org/apache/cassandra/stress/settings/SettingsCommand.java#L153]
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