Re: [tycho-user] What could have triggered the change of the caching beh

[Igor Fedorenko <igor@xxxxxxxxxxxxxx>]

As far as I can tell, you have the same repository referenced from
multiple reactor modules. Parsing repository metadata is rather
expansive, so Tycho reads it once and then reuses the same repository
metadata for all modules that reference the repository. Whether this is
a weak/soft or a hard reference does not matter because complete
metadata needs to be read in memory and your JVM does not have enough
heap for that. You need to either increase heap limit or reduce amount
of metadata (by referencing specific 3.7.x build instead of all
versions, for example).

--
Regards,
Igor


On 12-03-04 12:50 PM, Bernd Vogt wrote:
> Most probably it's like you say... my build server is not the strongest
> one and I have to keep memory consumption very low.
>
> Do you have any ideas, what caused Tycho the switch from "Adding
> repository (cached)" to "Adding repository"? Does Tycho make use of soft
> or weak caching at this point?
>
> 2012/3/4 Igor Fedorenko <igor@xxxxxxxxxxxxxx <mailto:igor@xxxxxxxxxxxxxx>>
>
>     Most likely your build already was on the threshold of running out of
>     heap. New eclipse version (i.e. 3.7.2) brought additional p2 metadata
>     and pushed the build over the available heap limit.
>
>     --
>     Regards,
>     Igor
>
>
>     On 12-03-04 10:32 AM, Bernd Vogt wrote:
>
>         Hi,
>
>         from one day to the other one of my build jobs begun to fail
>         because of
>         java.lang.OutOfMemoryError: Java heap space. And I'm still trying to
>         figure out why?
>
>         I noticed a little behavioral change while the tycho-surefire-plugin
>         tries to resolve the org.eclipse.equinox.launcher from my locally
>         mirrored Indigo repository. Befor the build started to fail, the
>         Indo
>         repository was already cached by Tycho, but now Tycho decides to
>         add a
>         "fresh" repository, see snippets below (Adding repository
>         (cached)  vs.
>         Adding repository).
>
>         What could have triggered this behavioral change?
>
>         Neither the build configuration, hardware or software was
>         changed nor
>         the source code. BUT around this time I have updated the local
>         Indigo
>         mirror with the new 3.7.2 stuff.
>
>         Thanks in advance
>         Bernd
>
>
>         The good old days
>         (http://jenkins.sourcepit.org/__job/b2_nightly/213/consoleFull
>         <http://jenkins.sourcepit.org/job/b2_nightly/213/consoleFull>__):
>         [INFO] --- tycho-surefire-plugin:0.14.1:__test (default-test) @
>         org.sourcepit.b2.examples.__simple.module.tests ---
>         [...]
>         [INFO] Adding repository *(cached)
>         *http://p2.sourcepit.org/__eclipse/indigo/
>         <http://p2.sourcepit.org/eclipse/indigo/>
>
>         [INFO] Downloading org.eclipse.equinox.launcher
>         [...]
>
>         Now
>         (http://jenkins.sourcepit.org/__job/b2_nightly/209/consoleFull
>         <http://jenkins.sourcepit.org/job/b2_nightly/209/consoleFull>__):
>         [INFO] --- tycho-surefire-plugin:0.14.1:__test (default-test) @
>         org.sourcepit.b2.examples.__simple.module.tests ---
>         [...]
>         [INFO] Adding repository
>         http://p2.sourcepit.org/__eclipse/indigo/
>         <http://p2.sourcepit.org/eclipse/indigo/>
>         [ERROR] Java heap space -> [Help 1]
>         java.lang.OutOfMemoryError: Java heap space
>
>
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