[HADOOP-9489] Eclipse instructions in BUILDING.txt don't work

• Type: Bug
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.7.0
• Component/s: build
• Labels: BB2015-05-TBR
• Target Version/s: 2.8.3
• Assignee: Unassigned
• Reporter: Carl Steinbach
• Created: 20/Apr/13 07:52
• Updated: 11/Sep/17 10:22

Description

I have tried several times to import Hadoop trunk into Eclipse following the instructions in the BUILDING.txt file, but so far have not been able to get it to work.

If I use a fresh install of Eclipse 4.2.2, Eclipse will complain about an undefined M2_REPO environment variable. I discovered that this is defined automatically by the M2Eclipse plugin, and think that the BUILDING.txt doc should be updated to explain this.

After installing M2Eclipse I tried importing the code again, and now get over 2500 errors related to missing class dependencies. Many of these errors correspond to missing classes in the oah*.proto namespace, which makes me think that 'mvn eclipse:eclipse' is not triggering protoc.