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https://issues.apache.org/jira/browse/DRILL-4935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15651922#comment-15651922
]
ASF GitHub Bot commented on DRILL-4935:
---------------------------------------
Github user harrisonmebane commented on the issue:
https://github.com/apache/drill/pull/647
I have tested this fix manually, in the following way:
* Deploy Drill in Docker containers on an existing cluster on AWS, with the
line
```export DRILL_HOST_NAME=`curl
http://169.254.169.254/latest/meta-data/local-ipv4` ``` in `drill-env.sh`, to
ensure that the variable is populated with the host machine's IP.
* Start a Drill session in the docker container and run `select * from
sys.drillbits;`. The result was:
```
+----------------+------------+---------------+------------+----------+
| hostname | user_port | control_port | data_port | current |
+----------------+------------+---------------+------------+----------+
| 172.31.21.207 | 31010 | 31011 | 31012 | false |
| 172.31.29.130 | 31010 | 31011 | 31012 | true |
| 172.31.22.200 | 31010 | 31011 | 31012 | false |
+----------------+------------+---------------+------------+----------+
```
* On one of the drillbits, comment out the `DRILL_HOST_NAME` line in
`drill-env.sh`, unset the variable, and restart the drillbit.
* Log into Drill shell again and run `select * from sys.drillbits;` Result
is now:
```
+----------------+------------+---------------+------------+----------+
| hostname | user_port | control_port | data_port | current |
+----------------+------------+---------------+------------+----------+
| 172.31.22.200 | 31010 | 31011 | 31012 | false |
| a53b37888f62 | 31010 | 31011 | 31012 | true |
| 172.31.29.130 | 31010 | 31011 | 31012 | false |
+----------------+------------+---------------+------------+----------+
```
* Running queries that require the other nodes results in a `Error: SYSTEM
ERROR: UnresolvedAddressException`, indicating that the new address registered
on Zookeeper no longer works
> Allow drillbits to advertise a configurable host address to Zookeeper
> ---------------------------------------------------------------------
>
> Key: DRILL-4935
> URL: https://issues.apache.org/jira/browse/DRILL-4935
> Project: Apache Drill
> Issue Type: New Feature
> Components: Execution - RPC
> Affects Versions: 1.8.0
> Reporter: Harrison Mebane
> Priority: Minor
> Fix For: Future
>
>
> There are certain situations, such as running Drill in distributed Docker
> containers, in which it is desirable to advertise a different hostname to
> Zookeeper than would be output by INetAddress.getLocalHost(). I propose
> adding a configuration variable 'drill.exec.rpc.bit.advertised.host' and
> passing this address to Zookeeper when the configuration variable is
> populated, otherwise falling back to the present behavior.
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