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Posted to users@maven.apache.org by Romain Gilles <ro...@thomsonreuters.com> on 2009/02/17 11:07:46 UTC
Removing: jar from forked lifecycle, to prevent recursive invocation
Hi all,
I have this message during my build process but I don't understand it:
<Removing: jar from forked lifecycle, to prevent recursive invocation>
It does not provide the name of the Jar, is there anybody that can help
me, please?
Romain.
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RE: Removing: jar from forked lifecycle, to prevent recursive invocation
Posted by Todd Thiessen <th...@nortel.com>.
I am wondering if Brian, or any other Maven expert our there, could
explain how this warning could be avoided entirely. I have looked into
this at length when adding, for example, source jars to my distribution.
However, the warning always occurs.
I have a pretty good understanding of why the warning occurs. If you
look at the documentation for the source plugin here:
http://maven.apache.org/plugins/maven-source-plugin/jar-mojo.html
You will notice in the fourth bullet it says:
* Invokes the execution of the lifecycle phase generate-sources prior to
executing itself.
Thus, if you attach this goal to your build, then if you execute any
phase at or above package (if you use the default phase binding of
package) then this plugin effectively runs the lifecycle twice; once up
to "generate-sources" when it executes the goal, then again for your
actual build. The warning is just letting you know that running the
lifecycle twice isn't necessary since the "generate-sources" phase will
get executed via the execution of the package phase.
I also understand that the goal is purposefully designed this way so it
can be called from the command line and still behave as expected without
having to explicitly generate sources if any sources need to be
generated.
So I believe I understand the warning, but I would love to properly
configure the plugin such that it does not emmit this warning when
attaching the goal to your build. Or perhaps this warning should simply
be suppressed entirely since Maven already seems to be aware of plugins
which fork their own lifecycle when bound to a phase of the lifecycle
and properly remove the extra fork. The warning seems to cause more
confusion than anything else.
My best guess is that for now, this is just part of Maven's core
architecture and hasn't been important enough to change. Some of this
"may" be fixed in the 3.0 release but I can't be sure of that.
Hopefully some of the experts could comment further.
---
Todd Thiessen
> -----Original Message-----
> From: Brian E. Fox [mailto:brianf@reply.infinity.nu]
> Sent: Tuesday, February 17, 2009 7:31 PM
> To: Maven Users List
> Subject: RE: Removing: jar from forked lifecycle, to prevent
> recursive invocation
>
> This means the plugin that caused the fork to occur is
> removed from that forked lifecycle so it doesn't fork again.
>
> -----Original Message-----
> From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
> Sent: Tuesday, February 17, 2009 5:08 AM
> To: Maven Users List
> Subject: Removing: jar from forked lifecycle, to prevent
> recursive invocation
>
>
> Hi all,
> I have this message during my build process but I don't understand it:
>
> <Removing: jar from forked lifecycle, to prevent recursive invocation>
>
> It does not provide the name of the Jar, is there anybody
> that can help
> me, please?
>
> Romain.
>
> This email was sent to you by Thomson Reuters, the global news and
> information company.
> Any views expressed in this message are those of the
> individual sender,
> except where the sender specifically states them to be the views of
> Thomson Reuters.
>
>
>
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> For additional commands, e-mail: users-help@maven.apache.org
>
>
> ---------------------------------------------------------------------
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RE: Removing: jar from forked lifecycle, to prevent recursive
invocation
Posted by Chris McMillan <mc...@me.com>.
> > <Removing: jar from forked lifecycle, to prevent recursive invocation>
I don't know if you are still looking for an answer to how to fix this
problem but what I found to fix the problem for me was to change the
maven-source-plugin goal from jar to jar-no-fork. I also had to add
<version>2.1</version> as well. You may also need to change test-jar to
test-jar-no-fork.
The information was not immediately obvious to me but
http://maven.apache.org/plugins/maven-source-plugin/ Maven Source Plugin
Help was where I found the information.
Chris McMillan
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RE: Removing: jar from forked lifecycle, to prevent recursive invocation
Posted by Todd Thiessen <th...@nortel.com>.
bump... Is anyone able provide some insite here? It would be really nice
to remove warnings such as this from my build ;-).
---
Todd Thiessen
> -----Original Message-----
> From: Thiessen, Todd (BVW:9T16)
> Sent: Wednesday, February 18, 2009 9:05 AM
> To: 'Maven Users List'
> Subject: RE: Removing: jar from forked lifecycle, to prevent
> recursive invocation
>
> I am wondering if Brian, or any other Maven expert our there,
> could explain how this warning could be avoided entirely. I
> have looked into this at length when adding, for example,
> source jars to my distribution. However, the warning always occurs.
>
> I have a pretty good understanding of why the warning occurs.
> If you look at the documentation for the source plugin here:
>
> http://maven.apache.org/plugins/maven-source-plugin/jar-mojo.html
>
> You will notice in the fourth bullet it says:
>
> * Invokes the execution of the lifecycle phase
> generate-sources prior to executing itself.
>
> Thus, if you attach this goal to your build, then if you
> execute any phase at or above package (if you use the default
> phase binding of package) then this plugin effectively runs
> the lifecycle twice; once up to "generate-sources" when it
> executes the goal, then again for your actual build. The
> warning is just letting you know that running the lifecycle
> twice isn't necessary since the "generate-sources" phase will
> get executed via the execution of the package phase.
>
> I also understand that the goal is purposefully designed this
> way so it can be called from the command line and still
> behave as expected without having to explicitly generate
> sources if any sources need to be generated.
>
> So I believe I understand the warning, but I would love to
> properly configure the plugin such that it does not emmit
> this warning when attaching the goal to your build. Or
> perhaps this warning should simply be suppressed entirely
> since Maven already seems to be aware of plugins which fork
> their own lifecycle when bound to a phase of the lifecycle
> and properly remove the extra fork. The warning seems to
> cause more confusion than anything else.
>
> My best guess is that for now, this is just part of Maven's
> core architecture and hasn't been important enough to change.
> Some of this "may" be fixed in the 3.0 release but I can't be
> sure of that. Hopefully some of the experts could comment further.
>
> ---
> Todd Thiessen
>
>
> > -----Original Message-----
> > From: Brian E. Fox [mailto:brianf@reply.infinity.nu]
> > Sent: Tuesday, February 17, 2009 7:31 PM
> > To: Maven Users List
> > Subject: RE: Removing: jar from forked lifecycle, to
> prevent recursive
> > invocation
> >
> > This means the plugin that caused the fork to occur is removed from
> > that forked lifecycle so it doesn't fork again.
> >
> > -----Original Message-----
> > From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
> > Sent: Tuesday, February 17, 2009 5:08 AM
> > To: Maven Users List
> > Subject: Removing: jar from forked lifecycle, to prevent recursive
> > invocation
> >
> >
> > Hi all,
> > I have this message during my build process but I don't
> understand it:
> >
> > <Removing: jar from forked lifecycle, to prevent recursive
> invocation>
> >
> > It does not provide the name of the Jar, is there anybody that can
> > help me, please?
> >
> > Romain.
> >
> > This email was sent to you by Thomson Reuters, the global news and
> > information company.
> > Any views expressed in this message are those of the individual
> > sender, except where the sender specifically states them to be the
> > views of Thomson Reuters.
> >
> >
> >
> >
> ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> >
> >
> >
> ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> > For additional commands, e-mail: users-help@maven.apache.org
> >
> >
>
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Re: Removing: jar from forked lifecycle, to prevent recursive
invocation
Posted by mfs <fa...@gmail.com>.
Hi Guys,
Though I see this warning (while using javadoc plugin), but so far its not
been a worry for me and everything is working fine. Still I had some
questions for the maven experts here to get a better understanding of
this...
Stephen mentioned in this thread, that it would be dangerous if the
plugin:mojo is NOT removed from the forked lifecycle, since the mojo could
cause yet another forked lifecycle and hence result in a recursive
invocation.
QUESTION 1 - Isn't the above statement only true, IF the forked-lifecyle
(caused by the mojo execution) passes through (or reaches) the PARTICULARLY
phase where the plugin was injected or configured to execute at the first
place. For example, I know the javadoc:javadoc mojo forks a new lifecycle
till the "generate-sources" phase before executing the javadoc mojo itself,
now lets say If I had injected the javadoc mojo to the "install" phase,
there is NO danger of recursive invocation, since the new forked-lifecyle
initiated by the javadoc mojo never reaches the install phase. Yes, If
instead I had hooked the javadoc:javadoc mojo to the "generate-sources" (or
any of the earlier) phase , then certainly I see the execution getting stuck
in a recursive loop.. Please comment...
QUESTION 2 - I see the "Removing [mojo] from forked lifecycle, to prevent
recursive invocation" warning only if i inject the mojo (e.g. javadoc) to
the build cycle phases (be it clean, default or even site lifecyle phase)
using the <build> section. If Instead I move the same definition to
<reporting> section, which in other word means the plugin/mojo would only
execute in the site lifecyle (if i am not wrong) then I don't see the
warning at all. I wonder why is that ? Isn't the danger of recursive
invocation still there (ignoring my first question) ?
Thanks in advance,
Farhan.
Stephen Connolly-2 wrote:
>
> It'd be dangerous is it didn't remove the jar mojo from the forked
> lifecycle, as the jar mojo is the mojo that forked the lifecycle in
> the first place... and if it didn't remove the plugin from the forked
> lifecycle, the forked lifecycle would fork again... and again.... and
> again....
>
> 2009/2/18 Romain Gilles <ro...@thomsonreuters.com>:
>> Is it a dangerous for my build ?
>> If yes, how can I find where the problem comes from ?
>>
>> Thanks,
>>
>> Romain.
>>
>>
>> -----Original Message-----
>> From: Brian E. Fox [mailto:brianf@reply.infinity.nu]
>> Sent: 18 February 2009 01:31
>> To: Maven Users List
>> Subject: RE: Removing: jar from forked lifecycle, to prevent recursive
>> invocation
>>
>> This means the plugin that caused the fork to occur is removed from that
>> forked lifecycle so it doesn't fork again.
>>
>> -----Original Message-----
>> From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
>> Sent: Tuesday, February 17, 2009 5:08 AM
>> To: Maven Users List
>> Subject: Removing: jar from forked lifecycle, to prevent recursive
>> invocation
>>
>>
>> Hi all,
>> I have this message during my build process but I don't understand it:
>>
>> <Removing: jar from forked lifecycle, to prevent recursive invocation>
>>
>> It does not provide the name of the Jar, is there anybody that can help
>> me, please?
>>
>> Romain.
>>
>> This email was sent to you by Thomson Reuters, the global news and
>> information company.
>> Any views expressed in this message are those of the individual sender,
>> except where the sender specifically states them to be the views of
>> Thomson Reuters.
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
>> For additional commands, e-mail: users-help@maven.apache.org
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
>> For additional commands, e-mail: users-help@maven.apache.org
>>
>>
>>
>> This email was sent to you by Thomson Reuters, the global news and
>> information company.
>> Any views expressed in this message are those of the individual sender,
>> except where the sender specifically states them to be the views of
>> Thomson Reuters.
>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
>> For additional commands, e-mail: users-help@maven.apache.org
>>
>>
>
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>
>
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Re: Removing: jar from forked lifecycle, to prevent recursive
invocation
Posted by Stephen Connolly <st...@gmail.com>.
It'd be dangerous is it didn't remove the jar mojo from the forked
lifecycle, as the jar mojo is the mojo that forked the lifecycle in
the first place... and if it didn't remove the plugin from the forked
lifecycle, the forked lifecycle would fork again... and again.... and
again....
2009/2/18 Romain Gilles <ro...@thomsonreuters.com>:
> Is it a dangerous for my build ?
> If yes, how can I find where the problem comes from ?
>
> Thanks,
>
> Romain.
>
>
> -----Original Message-----
> From: Brian E. Fox [mailto:brianf@reply.infinity.nu]
> Sent: 18 February 2009 01:31
> To: Maven Users List
> Subject: RE: Removing: jar from forked lifecycle, to prevent recursive
> invocation
>
> This means the plugin that caused the fork to occur is removed from that
> forked lifecycle so it doesn't fork again.
>
> -----Original Message-----
> From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
> Sent: Tuesday, February 17, 2009 5:08 AM
> To: Maven Users List
> Subject: Removing: jar from forked lifecycle, to prevent recursive
> invocation
>
>
> Hi all,
> I have this message during my build process but I don't understand it:
>
> <Removing: jar from forked lifecycle, to prevent recursive invocation>
>
> It does not provide the name of the Jar, is there anybody that can help
> me, please?
>
> Romain.
>
> This email was sent to you by Thomson Reuters, the global news and
> information company.
> Any views expressed in this message are those of the individual sender,
> except where the sender specifically states them to be the views of
> Thomson Reuters.
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
> For additional commands, e-mail: users-help@maven.apache.org
>
>
>
> This email was sent to you by Thomson Reuters, the global news and information company.
> Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Thomson Reuters.
>
>
>
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RE: Removing: jar from forked lifecycle, to prevent recursive
invocation
Posted by Romain Gilles <ro...@thomsonreuters.com>.
Is it a dangerous for my build ?
If yes, how can I find where the problem comes from ?
Thanks,
Romain.
-----Original Message-----
From: Brian E. Fox [mailto:brianf@reply.infinity.nu]
Sent: 18 February 2009 01:31
To: Maven Users List
Subject: RE: Removing: jar from forked lifecycle, to prevent recursive
invocation
This means the plugin that caused the fork to occur is removed from that
forked lifecycle so it doesn't fork again.
-----Original Message-----
From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
Sent: Tuesday, February 17, 2009 5:08 AM
To: Maven Users List
Subject: Removing: jar from forked lifecycle, to prevent recursive
invocation
Hi all,
I have this message during my build process but I don't understand it:
<Removing: jar from forked lifecycle, to prevent recursive invocation>
It does not provide the name of the Jar, is there anybody that can help
me, please?
Romain.
This email was sent to you by Thomson Reuters, the global news and
information company.
Any views expressed in this message are those of the individual sender,
except where the sender specifically states them to be the views of
Thomson Reuters.
---------------------------------------------------------------------
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Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Thomson Reuters.
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RE: Removing: jar from forked lifecycle, to prevent recursive invocation
Posted by "Brian E. Fox" <br...@reply.infinity.nu>.
This means the plugin that caused the fork to occur is removed from that
forked lifecycle so it doesn't fork again.
-----Original Message-----
From: Romain Gilles [mailto:romain.gilles@thomsonreuters.com]
Sent: Tuesday, February 17, 2009 5:08 AM
To: Maven Users List
Subject: Removing: jar from forked lifecycle, to prevent recursive
invocation
Hi all,
I have this message during my build process but I don't understand it:
<Removing: jar from forked lifecycle, to prevent recursive invocation>
It does not provide the name of the Jar, is there anybody that can help
me, please?
Romain.
This email was sent to you by Thomson Reuters, the global news and
information company.
Any views expressed in this message are those of the individual sender,
except where the sender specifically states them to be the views of
Thomson Reuters.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@maven.apache.org
For additional commands, e-mail: users-help@maven.apache.org
---------------------------------------------------------------------
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