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https://issues.apache.org/jira/browse/SAMZA-1387?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16123552#comment-16123552
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Hao Song commented on SAMZA-1387:
---------------------------------

Thanks a lot for the quick turnaround! For now we are going to just use 0.12. 
When 0.13.1 is out we will make the switch!

> 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
>             Fix For: 0.13.1
>
>
> [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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