[DRILL-4523] Disallow using loopback address in distributed mode

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.0
• Fix Version/s: 1.7.0
• Component/s: Server
• Assignee: Arina Ielchiieva
• Reporter: Arina Ielchiieva
• Reviewer: Krystal
• Created: 21/Mar/16 21:02
• Updated: 18/Apr/17 21:34
• Resolved: 07/Apr/16 09:34

Description

If we enable debug for org.apache.drill.exec.coord.zk in logback.xml, we only get the hostname and ports information. For example:

2015-11-04 19:47:02,927 [ServiceCache-0] DEBUG o.a.d.e.c.zk.ZKClusterCoordinator - Cache changed, updating.
2015-11-04 19:47:02,932 [ServiceCache-0] DEBUG o.a.d.e.c.zk.ZKClusterCoordinator - Active drillbit set changed.  Now includes 2 total bits.  New active drillbits:
 h3.poc.com:31010:31011:31012
 h2.poc.com:31010:31011:31012

We need to know the IP address of each hostname to do further troubleshooting.

Imagine if any drillbit registers itself as "localhost.localdomain" in zookeeper, we will never know where it comes from. Enabling IP address tracking can help this case.

Issue Links

• relates to: DRILL-4935 Allow drillbits to advertise a configurable host address to Zookeeper
• links to: GitHub Pull Request #445