Jake Maes commented on SAMZA-1387:

Sorry for the confusion. I must not have been very clear in my previous 

The exact problem you're describing was resolved in SAMZA-1317. You do not need 
to remove '.' from topic names in order to use the 0.13 release. 

I'll download the tarballs to verify that the fix is in the release and respond 
back here.

> 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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