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From "Ramana Inukonda Nagaraj (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-2550) Drillbit disconnect from ZK results in drillbit being lost until restart
Date Wed, 25 Mar 2015 00:22:52 GMT
Ramana Inukonda Nagaraj created DRILL-2550:
----------------------------------------------

             Summary: Drillbit disconnect from ZK results in drillbit being lost until restart
                 Key: DRILL-2550
                 URL: https://issues.apache.org/jira/browse/DRILL-2550
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
            Reporter: Ramana Inukonda Nagaraj
            Assignee: Chris Westin
            Priority: Minor


Not quite sure if this is an issue or even if its important- maybe someone can think of a
situation where this might be a bigger issue.

Steps taken to recreate:
1. Startup drillbits on multiple nodes. (They all come up and form a 8 node cluster)
2. Start executing a long running query.
3. Use TCPKILL to kill all connections between one node and zookeeper port 5181. 
Drill seems to behave very gracefully here - I see a nice error message saying Query failed:
ForemanException: One more more nodes lost connectivity during query. Identified node was
atsqa6c61.qa.lab

However, once I start allowing connections back the node is not brought back as part of the
cluster until a drillbit restart.



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