Hao Song commented on SAMZA-1387:

I believe I'm using the one provided by maven repository. I think in this case 
the problem is the streamId has '.'. Below is the line I pasted in description:

[ec2-user@namenode-shadow-1] out: Exception in thread "main" 
java.lang.IllegalArgumentException: Identifier 'streamId' is 
'_samza_coordinator<env>.<AppName>_1'. It must match the expression 

It is complaining about streamId. So in this case we have to change all of our 
topic names? Is that the only way to upgrade to 0.13?

> Unable to Start Samza App Because Regex Check
> ---------------------------------------------
>                 Key: SAMZA-1387
>                 URL: https://issues.apache.org/jira/browse/SAMZA-1387
>             Project: Samza
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: Hao Song
>            Assignee: Jake Maes
> [I created this as a bug but feel free to change it if it's a feature]
> When I'm trying to upgrade Samza to 0.13 (from 0.11), I got the error below 
> when trying to start our job: 
> [ec2-user@namenode-shadow-1] out: 2017-08-09 17:26:31.977 [main] 
> KafkaSystemAdmin [INFO] Attempting to create coordinator stream 
> __samza_coordinator_<env>.<AppName>_1.
> [ec2-user@namenode-shadow-1] out: Exception in thread "main" 
> java.lang.IllegalArgumentException: Identifier 'streamId' is 
> '__samza_coordinator_<env>.<AppName>_1'. It must match the expression 
> [A-Za-z0-9_-]+
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.system.StreamSpec.validateLogicalIdentifier(StreamSpec.java:201)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.system.StreamSpec.<init>(StreamSpec.java:140)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.system.kafka.KafkaStreamSpec.<init>(KafkaStreamSpec.java:152)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.system.kafka.KafkaSystemAdmin.createCoordinatorStream(KafkaSystemAdmin.scala:334)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.job.JobRunner.run(JobRunner.scala:88)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.job.JobRunner$.doOperation(JobRunner.scala:52)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.job.JobRunner$.main(JobRunner.scala:47)
> [ec2-user@namenode-shadow-1] out:     at 
> org.apache.samza.job.JobRunner.main(JobRunner.scala)
> Looking at Samza code on Github, it seems Samza just started to restrict 
> topic names to a stricter sets. It doesn't allow '.' anymore whereas we have 
> been using '.' for all of our topics. That means we cannot upgrade to Samza 
> 0.13 without changing all the topics. That also breaks our convention for 
> defining topic names. Having '.' in the topic name is actually very 
> convenient for us because they can be shown in Grafana/StatsD in a more 
> organized way.
> Here is the change in Github: 
> https://github.com/apache/samza/commit/e6c1eed4f1d576661abafce8477c1749c2554b39#diff-98a114809fb1ab416f8d1d0b4d318b96R201
> Can you expand the regex set to a larger set including '.'? Thanks in advance!

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