Andrea,
the test Travis build passed so I applied the fix to master, 2.12.x, and
2.11.x. I also went through open pull requests, found three which had
failed with the timeout error, and closed-reopened each to start a new
Travis build the latest settings.
GeoTools may also be vulnerable. The lack of -U used on Travis might
only reduce the risk. If anyone sees one of these timeouts "No output
has been received in the last 10m0s, this potentially indicates a
stalled build or something wrong with the build itself.", please let
everyone know.
I will report the bug to the Maven maintainers.
Kind regards,
Ben.
On 18/12/17 22:56, Ben Caradoc-Davies wrote:
Andrea,
I have not yet filed a bug report.
I am testing a workaround to download and use Maven 3.5.0:
https://github.com/geoserver/geoserver/commit/a78d7c4711bdde1c853df523f5919a95cadd9359
The test Travis build is running on the debug-travis branch:
https://travis-ci.org/geoserver/geoserver/builds/317993402
Kind regards,
Ben.
On 18/12/17 21:50, Andrea Aime wrote:
Hi Ben,
thanks for the investigation!
Did you open a bug report?
Also, I'm wondering, can we use a custom version of Maven?
Cheers
Andrea
On Mon, Dec 18, 2017 at 9:42 AM, Ben Caradoc-Davies <[email protected]>
wrote:
I have been able to reproduce build hangs locally in src/community with:
mvn -B -T4 -U -Prelease -PcommunityRelease -DskipTests clean install
The hangs occur *only* with Maven 3.5.2, -U, and -T4.
- Maven 3.5.0 -> no hang
- Single threaded (no -T) - > no hang
- No -U (so reduced downloads) -> no hang
The latest Travis release updated to Maven 3.5.2, causing the problem.
Travis is blameless, and my endless tinkering with travis_wait and other
settings in .travis.yml was to no avail. This is a Maven problem.
jstack shows clear evidence of a deadlock during multi-threaded
dependency
resolution (attached).
The build eventually recovers (some of the locks are a TIMED__WAIT).
GeoTools does not use -U because it has no SNAPSHOT dependencies and is
thus unaffected.
Removing -T is not an option because we have seen hangs in the main
build
as well and the single-threaded build is too slow.
Kind regards,
Ben.
On 18/12/17 12:41, Ben Caradoc-Davies wrote:
We are not the only users having problems:
https://github.com/travis-ci/travis-ci/issues
On 18/12/17 12:29, Ben Caradoc-Davies wrote:
The Travis failures we are experiencing started with the rollout of
new
trusty images about six days ago:
https://blog.travis-ci.com/2017-12-12-new-trusty-images-q4-launch
Kind regards,
--
Ben Caradoc-Davies <[email protected]>
Director
Transient Software Limited <https://transient.nz/>
New Zealand
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Ben Caradoc-Davies <[email protected]>
Director
Transient Software Limited <https://transient.nz/>
New Zealand
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