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Posted to common-issues@hadoop.apache.org by GitBox <gi...@apache.org> on 2019/09/11 01:27:47 UTC

[GitHub] [hadoop] vivekratnavel opened a new pull request #1424: HDDS-2107. Datanodes should retry forever to connect to SCM in an…

vivekratnavel opened a new pull request #1424: HDDS-2107. Datanodes should retry forever to connect to SCM in an…
URL: https://github.com/apache/hadoop/pull/1424
 
 
   … unsecure environment
   
    In an unsecure environment, the datanodes try upto 10 times after waiting for 1000 milliseconds each time before throwing this error:
   
   ```Unable to communicate to SCM server at scm:9861 for past 0 seconds.
   java.net.ConnectException: Call From scm:9861 failed on connection exception: java.net.ConnectException: Connection refused;```
   
   This PR fixes that issue by having datanodes try forever to connect with SCM and not fail immediately after 10 retries.
   
   I have also increased timeouts on a unit test to improve its stability.
   

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