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https://issues.apache.org/jira/browse/HUDI-473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17113893#comment-17113893
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Bhavani Sudha commented on HUDI-473:
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[~zhangpu-paul] I believe you can reproduce this exception when doing
dataGen.generateUpdates before calling any other dataGen's methods(including
dataGen.generateInserts) . This is happening because numExistingKeys would be 0
since no Inserts happened yet. This class QuickStartUtils is meant specifically
for [Hudi quickstart page|https://hudi.apache.org/docs/quick-start-guide.html]
and works on the assumption a user trying the quickstart page would first try
insert and then update. Also the usage assumes some one is trying this in a
single process.
If you are already using it in that way, can you paste the spark-shell command
you are using when you got this exception? I can debug this further.
Otherwise, I think this exception is expected.
> IllegalArgumentException in QuickstartUtils
> --------------------------------------------
>
> Key: HUDI-473
> URL: https://issues.apache.org/jira/browse/HUDI-473
> Project: Apache Hudi (incubating)
> Issue Type: Improvement
> Components: Usability
> Reporter: zhangpu
> Assignee: Bhavani Sudha
> Priority: Minor
> Labels: bug-bash-0.6.0, starter
>
> First call dataGen.generateInserts to write the data，Then another process
> call dataGen.generateUpdates ,Throws the following exception：
> Exception in thread "main" java.lang.IllegalArgumentException: bound must be
> positive
> at java.util.Random.nextInt(Random.java:388)
> at
> org.apache.hudi.QuickstartUtils$DataGenerator.generateUpdates(QuickstartUtils.java:163)
> Is the design reasonable?
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