[HBASE-4448] HBaseTestingUtilityFactory - pattern for re-using HBaseTestingUtility instances across unit tests

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Assignee: Unassigned
• Reporter: Doug Meil
• Created: 20/Sep/11 12:32
• Updated: 12/Jun/22 19:32
• Resolved: 01/Mar/12 23:24

Description

Setting up and tearing down HBaseTestingUtility instances in unit tests is very expensive. On my MacBook it takes about 10 seconds to set up a MiniCluster, and 7 seconds to tear it down. When multiplied by the number of test classes that use this facility, that's a lot of time in the build.

This factory assumes that the JVM is being re-used across test classes in the build, otherwise this pattern won't work.

I don't think this is appropriate for every use, but I think it can be applicable in a great many cases - especially where developers just want a simple MiniCluster with 1 slave.

Issue Links

• is depended upon by: GORA-89 Avoid HBase MiniCluster restarts to shorten gora-hbase tests
• is related to: HBASE-4602 Make the suite run in at least half the time