Improve reliability of issue migration

[GoogleCodeExporter]

There have been a lot of issues reported about migrations failing due to failed 
issue migrations. Dumping all of those to this master issue.

The underlying problem is due to underlying problems in App Engine's urlfetch 
API, and the fact that the Google Code Exporter aborts the migration if any 
GitHub API calls fail. A 0.01% chance of failure across hundreds of issues, 
across dozens of comments is a serious problem.

If you delete the GitHub repository and try again, there is a chance it will 
work on the next try. We've been making small progress towards reliability 
here; but the real fix is to retry GitHub API calls in the event of failure. 
(And check if state changing requests like POSTs actually went through.)

Original issue reported on code.google.com by chrsm...@google.com on 24 Apr 2015 at 10:20

[GoogleCodeExporter]

Original comment by chrsm...@google.com on 24 Apr 2015 at 10:25

[GoogleCodeExporter]

Issue 80 has been merged into this issue.

Original comment by chrsm...@google.com on 26 Apr 2015 at 1:14

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Rolled out another change this morning that should improve this. Closing out 
for now.

Original comment by chrsm...@google.com on 27 May 2015 at 5:28

• Changed state: Fixed