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https://issues.apache.org/jira/browse/CASSANDRA-12237?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Batey updated CASSANDRA-12237:
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Attachment: (was: 12237-trunk.txt)
> Cassandra stress graphing is broken
> -----------------------------------
>
> Key: CASSANDRA-12237
> URL: https://issues.apache.org/jira/browse/CASSANDRA-12237
> Project: Cassandra
> Issue Type: Bug
> Components: Tools
> Reporter: Christopher Batey
> Assignee: Christopher Batey
> Fix For: 3.x
>
>
> Cassandra stress relies on a tmp file with the stress output so it can parse
> it and put it the the graph html.
> However the contents of this file is now broken:
> {code}
> Sleeping 2s...Sleeping 2s...
> Sleeping 2s...
> Warming up WRITE with 50000 iterations...Warming up WRITE with 50000
> iterations...
> Warming up WRITE with 50000 iterations...
> Running WRITE with 500 threads 10 secondsRunning WRITE with 500 threads 10
> seconds
> Running WRITE with 500 threads 10 seconds
> ...
> {code}
> This is as we create a {code}MultiPrintStream{code} that inherits from
> {code}PrintWriter{code} and then delegate the call to super as well as a list
> of other PrintWriters
> The call to super for println comes back into our print method so every line
> gets logged multiple times as we do the for (PrintStream s: newStreams) many
> times.
> We can change this to use composition and use our own interface if we want to
> use a composite for logging the results
> This results in the parsing of this file not quite working and the aggregate
> stats not working in produced graphs.
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