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https://issues.apache.org/jira/browse/GOBBLIN-1952?focusedWorklogId=889332&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-889332
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ASF GitHub Bot logged work on GOBBLIN-1952:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/Nov/23 19:53
            Start Date: 07/Nov/23 19:53
    Worklog Time Spent: 10m 
      Work Description: Will-Lo commented on code in PR #3822:
URL: https://github.com/apache/gobblin/pull/3822#discussion_r1385477354


##########
gobblin-service/src/main/java/org/apache/gobblin/service/modules/spec/JobExecutionPlan.java:
##########
@@ -112,10 +112,10 @@ private static JobSpec buildJobSpec(FlowSpec flowSpec, 
Config jobConfig, Long fl
       // job names are assumed to be unique within a dag.
       int hash = flowInputPath.hashCode();
       jobName = Joiner.on(JOB_NAME_COMPONENT_SEPARATION_CHAR).join(flowGroup, 
flowName, jobName, edgeId, hash);
-      // jobNames are commonly used as a directory name, which is limited to 
255 characters
+      // jobNames are commonly used as a directory name, which is limited to 
255 characters (account for potential prefixes added/file name lengths)

Review Comment:
   1. No because then it would create a different work directory per execution 
which would lead to jars not being cached etc.
   2. Not sure but I believe it was decided a while back that it would be more 
unique in the multihop/parallel job setting than edgeId or flowName, as you can 
have one edge map to multiple jobs.





Issue Time Tracking
-------------------

    Worklog Id:     (was: 889332)
    Time Spent: 1h 10m  (was: 1h)

> GaaS JobNames with long lengths cause issues with HDFS folders
> --------------------------------------------------------------
>
>                 Key: GOBBLIN-1952
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-1952
>             Project: Apache Gobblin
>          Issue Type: Bug
>          Components: gobblin-service
>            Reporter: William Lo
>            Assignee: Abhishek Tiwari
>            Priority: Major
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> Gobblin-as-a-Service creates jobnames using flowgroups flownames, edges, and 
> jobnames from the template. However, this tends to create a very long string 
> which then causes issues in Gobblin job when creating files that use the 
> jobname to create working directories or state stores. Although there has 
> been previous code that shortens job name lengths, we want to further 
> increase this by being more aggressive with the maximum length of the jobname 
> to reduce the odds of exceeding 255 chars (max length of HDFS component)



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