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https://issues.apache.org/jira/browse/GOBBLIN-1308?focusedWorklogId=518293&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-518293
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ASF GitHub Bot logged work on GOBBLIN-1308:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 01/Dec/20 05:38
            Start Date: 01/Dec/20 05:38
    Worklog Time Spent: 10m 
      Work Description: jhsenjaliya commented on a change in pull request #3157:
URL: https://github.com/apache/incubator-gobblin/pull/3157#discussion_r533084315



##########
File path: 
gobblin-yarn/src/main/java/org/apache/gobblin/yarn/AbstractYarnAppSecurityManager.java
##########
@@ -117,7 +118,11 @@ protected void startUp() throws Exception {
     this.loginExecutor.scheduleAtFixedRate(new Runnable() {
       @Override
       public void run() {
-        loginAndScheduleTokenRenewal();
+        try {
+          loginAndScheduleTokenRenewal();
+        }catch(Exception e){
+          LOGGER.error("Error login using keytab, will continue the thread and 
try next time.");

Review comment:
       Sure 




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

    Worklog Id:     (was: 518293)
    Time Spent: 1h 20m  (was: 1h 10m)

> Gobblin's kerberos token management for remote clusters
> -------------------------------------------------------
>
>                 Key: GOBBLIN-1308
>                 URL: https://issues.apache.org/jira/browse/GOBBLIN-1308
>             Project: Apache Gobblin
>          Issue Type: Improvement
>    Affects Versions: 0.15.0
>            Reporter: Jay Sen
>            Priority: Major
>             Fix For: 0.16.0
>
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> Gobblin's hadoop tokens/ key management : 
>  Problem: Gobblin only maintains local cluster tokens when key management is 
> enabled. and does not have capability to manage tokens for remote hadoop 
> cluster. ( based on my conversation with many folks here, the token files can 
> be made available externally. but that would require that external system 
> running on cron or something )
> Solution: add remote cluster token management in Gobblin. where remote 
> clusters key can be managed same way it manages the local clusters keys.
>  
> Config looks like following
> ( Changes the enable.key.management config to key.management.enabled )
>  
> {code:java}
> gobblin.hadoop.key.management {
>  enabled = true
>  remote.clusters = [ ${gobblin_sync_systems.hadoop_cluster1}, 
> ${gobblin_sync_systems.hadoop_cluster2} ]
> }
> // These Gobblin platform configurations can be moved to database for other 
> use-cases, but this layout helps make the platform moduler for each 
> connectors.
> gobblin_sync_systems {
>  hadoop_cluster1 {
>  // if Hadoop config path is specified, the FileSystem will be created based 
> on all the xml config provided here, which has all the required info.
>  hadoop_config_path = "file:///etc/hadoop_cluster1/hadoop/config"
>  // If hadoop config path is not specified, you can still specify the 
> speecific nodes for the specific type of tokens
>  namenode_uri = ["hdfs://nn1.hadoop_cluster1.example.com:8020", 
> "hdfs://nn2.hadoop_cluster1.example.com:8020"]
>  kms_nodes = [ "kms1.hadoop_cluster1.example.com:9292", 
> "kms2.hadoop_cluster1.example.com:9292" ]
>  }
>  hadoop_cluster2 {
>  hadoop_config_path = "file:///etc/hadoop_cluster1/hadoop/config"
>  namenode_uri = ["hdfs://nn1.hadoop_cluster2.example.com:8020", 
> "hdfs://nn2.hadoop_cluster2.example.com:8020"]
>  kms_nodes = [ "kms1.hadoop_cluster2.example.com:9292", 
> "kms2.hadoop_cluster2.example.com:9292" ]
>  }
> }{code}



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