[ 
https://issues.apache.org/jira/browse/FLINK-7600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16157785#comment-16157785
 ] 

ASF GitHub Bot commented on FLINK-7600:
---------------------------------------

GitHub user bowenli86 opened a pull request:

    https://github.com/apache/flink/pull/4657

    [FLINK-7600][kinesis] shorten delay of 
KinesisProducerConfiguration.setCredentialsRefreshDelay() to avoid 
updateCredentials Exception

    ## What is the purpose of the change
    
    we saw the following warning in Flink log:
    
    ```
    2017-08-11 02:33:24,473 WARN  
org.apache.flink.kinesis.shaded.com.amazonaws.services.kinesis.producer.Daemon  
- Exception during updateCredentials
    java.lang.InterruptedException: sleep interrupted
        at java.lang.Thread.sleep(Native Method)
        at 
org.apache.flink.kinesis.shaded.com.amazonaws.services.kinesis.producer.Daemon$5.run(Daemon.java:316)
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
    ```
    
    According to discussion in 
https://github.com/awslabs/amazon-kinesis-producer/issues/10, setting the delay 
to 100 will fix this issue
    
    ## Brief change log
    
      - *shorten aws credentials refresh delay to 100 millisec*
    
    ## Verifying this change
    
    This change is a trivial rework / code cleanup without any test coverage.
    
    I've been running the fixed flink-connector-kinesis for a few days on AWS, 
and that warning log never happens again
    
    ## Does this pull request potentially affect one of the following parts:
    
    ## Documentation
    
      - Does this pull request introduce a new feature? (no)
    


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/bowenli86/flink FLINK-7600

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/4657.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #4657
    
----
commit 6386983239bd3024b395c865ec4fd33e232ca5a3
Author: Bowen Li <[email protected]>
Date:   2017-08-30T16:35:03Z

    FLINK-7422 Upgrade Kinesis Client Library (KCL) and AWS SDK in 
flink-connector-kinesis

commit 381cd4156b84673a1d32d2db3f7b2d748d90d980
Author: Bowen Li <[email protected]>
Date:   2017-09-07T06:33:37Z

    Merge remote-tracking branch 'upstream/master'

commit 38e8654142939061aa9595d67311619c9eb759ec
Author: Bowen Li <[email protected]>
Date:   2017-09-07T21:36:28Z

    FLINK-7600 shorten delay of 
KinesisProducerConfiguration.setCredentialsRefreshDelay() to avoid 
updateCredentials Exception

----


> shorten delay of KinesisProducerConfiguration.setCredentialsRefreshDelay() to 
> avoid updateCredentials Exception
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: FLINK-7600
>                 URL: https://issues.apache.org/jira/browse/FLINK-7600
>             Project: Flink
>          Issue Type: Bug
>          Components: Kinesis Connector
>    Affects Versions: 1.3.2
>            Reporter: Bowen Li
>            Assignee: Bowen Li
>            Priority: Minor
>             Fix For: 1.4.0, 1.3.3
>
>
> we saw the following warning in Flink log:
> {code:java}
> 2017-08-11 02:33:24,473 WARN  
> org.apache.flink.kinesis.shaded.com.amazonaws.services.kinesis.producer.Daemon
>   - Exception during updateCredentials
> java.lang.InterruptedException: sleep interrupted
>       at java.lang.Thread.sleep(Native Method)
>       at 
> org.apache.flink.kinesis.shaded.com.amazonaws.services.kinesis.producer.Daemon$5.run(Daemon.java:316)
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>       at java.lang.Thread.run(Thread.java:748)
> {code}
> According to discussion in 
> https://github.com/awslabs/amazon-kinesis-producer/issues/10, setting the 
> delay to 100 will fix this issue



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