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From "Adam Holmberg (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-7645) cqlsh: show partial trace if incomplete after max_trace_wait
Date Thu, 22 Oct 2015 16:10:27 GMT


Adam Holmberg commented on CASSANDRA-7645:

Also, the fallback mechanism `show_session` uses the same QueryTrace.populate mechanism to
query the trace, but with a max_wait of 2.0 seconds. We would need to bypass that if we really
want to see a partial trace.

> cqlsh: show partial trace if incomplete after max_trace_wait
> ------------------------------------------------------------
>                 Key: CASSANDRA-7645
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Tyler Hobbs
>            Assignee: Carl Yeksigian
>            Priority: Trivial
>             Fix For: 3.0.0 rc2, 2.2.4, 2.1.12
> If a trace hasn't completed within {{max_trace_wait}}, cqlsh will say the trace is unavailable
and not show anything.  It (and the underlying python driver) determines when the trace is
complete by checking if the {{duration}} column in {{system_traces.sessions}} is non-null.
 If {{duration}} is null but we still have some trace events when the timeout is hit, cqlsh
should print whatever trace events we have along with a warning about it being incomplete.

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