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https://issues.apache.org/jira/browse/CASSANDRA-7645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14969365#comment-14969365
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Adam Holmberg commented on CASSANDRA-7645:
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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: https://issues.apache.org/jira/browse/CASSANDRA-7645
> 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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