[jira] [Created] (CASSANDRA-7608) StressD doesn't can't create keyspaces with Write Command

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

Russell Alexander Spitzer created CASSANDRA-7608:
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             Summary: StressD doesn't can't create keyspaces with Write Command
                 Key: CASSANDRA-7608
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7608
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Russell Alexander Spitzer
            Priority: Minor


It is impossible to run the default stress command via the dameon ./stress write
Because the column names are HeapByteBuffers so they get ignored during serilization (no error is thrown) and then when the object is deserialized on the server the settings.columns.names is null. This leads to a null pointer on the dameon for what would have worked had it run locally.

Settings object on the Local machine
{code}
columns = {org.apache.cassandra.stress.settings.SettingsColumn@1465}
maxColumnsPerKey = 5
names = {java.util.Arrays$ArrayList@1471} size = 5
[0] = {java.nio.HeapByteBuffer@1478}"java.nio.HeapByteBuffer[pos=0 lim=2 cap=2]"
[1] = {java.nio.HeapByteBuffer@1483}"java.nio.HeapByteBuffer[pos=0 lim=2 cap=2]"
[2] = {java.nio.HeapByteBuffer@1484}"java.nio.HeapByteBuffer[pos=0 lim=2 cap=2]"
[3] = {java.nio.HeapByteBuffer@1485}"java.nio.HeapByteBuffer[pos=0 lim=2 cap=2]"
[4] = {java.nio.HeapByteBuffer@1486}"java.nio.HeapByteBuffer[pos=0 lim=2 cap=2]"
{code}

Setings object on the StressD Machine
{code}
columns = {org.apache.cassandra.stress.settings.SettingsColumn@810}
maxColumnsPerKey = 5
names = null
{code}


This leads to the null pointer in 
{code}
Exception in thread "Thread-1" java.lang.NullPointerException
    at org.apache.cassandra.stress.settings.SettingsSchema.createKeySpacesThrift(SettingsSchema.java:94)
    at org.apache.cassandra.stress.settings.SettingsSchema.createKeySpaces(SettingsSchema.java:67)
    at org.apache.cassandra.stress.settings.StressSettings.maybeCreateKeyspaces(StressSettings.java:193)
    at org.apache.cassandra.stress.StressAction.run(StressAction.java:59)
    at java.lang.Thread.run(Thread.java:745)
{code}

Which refers to
{code}
       for (int i = 0; i < settings.columns.names.size(); i++)
            standardCfDef.addToColumn_metadata(new ColumnDef(settings.columns.names.get(i), "BytesType"));
{code}


Possible solution:
Just use the settings.columns.namestr and convert them to byte buffers at this point in the code. 



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