[jira] [Created] (CASSANDRA-7559) Switch Stress from using math3.pair because it is unserializable

["Russell Alexander Spitzer (JIRA)" <ji...@apache.org>]

Russell Alexander Spitzer created CASSANDRA-7559:
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             Summary: Switch Stress from using math3.pair because it is unserializable 
                 Key: CASSANDRA-7559
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7559
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Russell Alexander Spitzer


Stress uses org.apache.commons.math3.util.Pair to hold information in settings because eventually it is used in commons.math3.distributions. This makes the settings unserializable so we can't run with StressDemon.

{code}
/bin/cassandra-stress user no_warmup "ops(insert=1)" n=10000 profile=cqlstress-example.yaml -sendto 127.0.0.1
Exception in thread "main" java.io.NotSerializableException: org.apache.commons.math3.util.Pair
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1183)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
at java.util.ArrayList.writeObject(ArrayList.java:742)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:988)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1495)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1547)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1508)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1431)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1177)
	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:347)
	at org.apache.cassandra.stress.Stress.main(Stress.java:78)
Control-C caught. Canceling running action and shutting down...
{code}

To fix this we can pass around serializable pairs and convert to commons.math3 pairs before we actually pass the objects to the distribution code. 



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