Alex Ott created CASSANDRA-14426:
------------------------------------

             Summary: cassandra-stress throws NPE if insert section isn't 
specified in user profile
                 Key: CASSANDRA-14426
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14426
             Project: Cassandra
          Issue Type: Bug
          Components: Stress
            Reporter: Alex Ott


When user profile file is used, and insert section isn't specified, then 
cassandra-stress is using default values instead.

Since support for LWTs was added, absence of the insert section lead to 
throwing of NullPointerException when generating inserts:

{noformat}
java.lang.NullPointerException
        at 
org.apache.cassandra.stress.StressProfile.getInsert(StressProfile.java:546)
        at 
org.apache.cassandra.stress.StressProfile.printSettings(StressProfile.java:126)
        at 
org.apache.cassandra.stress.settings.StressSettings.lambda$printSettings$1(StressSettings.java:311)
        at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
        at 
org.apache.cassandra.stress.settings.StressSettings.printSettings(StressSettings.java:311)
        at org.apache.cassandra.stress.Stress.run(Stress.java:108)
        at org.apache.cassandra.stress.Stress.main(Stress.java:63)
{noformat}

Fix is trivial, and will be provided as PR



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