Dan Tran created MNG-7433:
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Summary: multiple maven instances working same source tree can
lock each other
Key: MNG-7433
URL: https://issues.apache.org/jira/browse/MNG-7433
Project: Maven
Issue Type: Bug
Affects Versions: 3.8.5
Reporter: Dan Tran
I have a large multi modules java maven build where:
* phase 1 - basic build + unit tests - 40 min
* phase 2 - sonar:sonar 20 min
* phase 3 - final packaging and basic smoke-test - 20 min
To take advantage of Maven multi-threaded build, during the reactor build, one
of our maven module spins another instance of Maven to run sonar:sonar goal
right after the basic build is done.
This means our phase 1 and phase 2 are running parallel sharing the same
source tree, same local maven repo (where sonar:sonar should have all needed
dependencies to run its task)
With maven-3.8.5, parallelization is no longer possible, phase 3 is blocked
until phase 2 is done.
I am able to trace it to https://github.com/apache/maven/pull/628 where the
locking started the happen
How does the lock mechanic work? there must be a local file where both Maven
instances are watching each other. Is there an option to disable this lock?
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