Christopher Batey created CASSANDRA-12237:
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Summary: 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
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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