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https://issues.apache.org/jira/browse/STORM-1485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15107486#comment-15107486
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ASF GitHub Bot commented on STORM-1485:
---------------------------------------

GitHub user kishorvpatil opened a pull request:

    https://github.com/apache/storm/pull/1028

    [STORM-1485] DRPC Connectivity Issues for 1.-x-branch

    - ZK-Login-From-AutoTGT thread should not die if TGT in `AutoTGT` has 
expired. ( It gives grace 10 minutes before killing worker.) This required 
copying and modified `org.apache.zookeeper.Login` class. 
    - `DRPCClient` should not give up connecting to DRPC after n-retries.
    - `ReturnResults` Bolt should retry connection on failure to send results 
to DRPC.


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

    $ git pull https://github.com/kishorvpatil/incubator-storm storm1485-for1.x

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

    https://github.com/apache/storm/pull/1028.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 #1028
    
----
commit 38c6720bf10bb7f8ff13556781916fa8d384df5e
Author: Kishor Patil <kpa...@yahoo-inc.com>
Date:   2016-01-19T17:13:38Z

    Original Zookeeper Login Class

commit 5b7959f1a4613bd3d8e8c0cd1f9d70d6c37487cc
Author: Kishor Patil <kpa...@yahoo-inc.com>
Date:   2016-01-19T17:39:52Z

    ZK Login Thread should not stop on TGT expiry, instead it should shutdown 
JVM after grace period.

commit 61970fa18beff315a64ab57a8c91f756e6d90b0b
Author: Kishor Patil <kpa...@yahoo-inc.com>
Date:   2016-01-19T17:58:43Z

    DRPCClient should keep trying to connect to DRPC server forever

commit c21b5008bebc9f28ef0a147f6f7a1f169ada88f0
Author: Kishor Patil <kpa...@yahoo-inc.com>
Date:   2016-01-19T18:34:14Z

    ReturnResults should make 3 attempts to send results to DRPC server, in 
case of thrift exceptions.

----


> DRPC Connectivity Issues
> ------------------------
>
>                 Key: STORM-1485
>                 URL: https://issues.apache.org/jira/browse/STORM-1485
>             Project: Apache Storm
>          Issue Type: Bug
>          Components: storm-core
>            Reporter: Kishor Patil
>            Assignee: Kishor Patil
>
> We need fixing following issues for DRPC 
> 1. DRPCClient should not stop trying to connect to DRPC after certain fixed 
> number of retries - because DRPC server may be down for longer duration.
> 2. KerberosSaslTransportPlugin uses zookeeper Login session for creating 
> Thread that dies if TGT has expired - which not recoverable state. In such 
> scenario, JVM should be restarted gracefully.
> 3. DRPC ReturnResults bolt Should re-retry Connection to DRPC on 
> ThriftException while sending results for particular request.



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