So digging in… Solr instantiates the merge scheduler via it's ResourceLoader,
which takes a class name. The random indexconfig snippet sets the classname to
whatever the value of ${solr.tests.mergeScheduler} is. This is set in
SolrTestCaseJ4.newRandomConfig():
System.setProperty("solr.tests.mergeScheduler",
iwc.getMergeScheduler().getClass().getName());
And I guess you can't call Class.newInstance() on an anonymous class?
Alan Woodward
www.flax.co.uk
On 19 Nov 2014, at 18:10, Michael McCandless wrote:
> Oh, I also saw this before committing, was confused, ran "ant clean
> test" in solr directory, and it passed, so I thought "ant clean" fixed
> it ... I guess not.
>
> With this change, in LuceneTestCase's newIndexWriterConfig, I
> sometimes randomly subclass ConcurrentMergeScheduler (to turn off
> merge throttling) in the random IWC that's returned. Does this make
> Solr unhappy? Why is Solr trying to instantiate the merge scheduler
> class that's already instantiated on IWC? I'm confused...
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
>
> On Wed, Nov 19, 2014 at 1:00 PM, Alan Woodward <a...@flax.co.uk> wrote:
>> I think this might be to do with Mike's changes in r1640457, but for some
>> reason I can't up from svn or the apache git repo at the moment so I'm not
>> certain.
>>
>> Alan Woodward
>> www.flax.co.uk
>>
>>
>> On 19 Nov 2014, at 17:05, Chris Hostetter wrote:
>>
>>
>> Apologies -- I haven't been following the commits closely this week.
>>
>> Does anyone have any idea what changed at the low levels of the Solr
>> testing class hierarchy to cause these failures in a variety of tests?
>>
>> : SolrCore 'collection1' is not available due to init failure: Error
>> : instantiating class: 'org.apache.lucene.util.LuceneTestCase$3'
>>
>> : Caused by: org.apache.solr.common.SolrException: Error instantiating
>> class: 'org.apache.lucene.util.LuceneTestCase$3'
>> : at
>> org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:532)
>> : at
>> org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:517)
>> : at
>> org.apache.solr.update.SolrIndexConfig.buildMergeScheduler(SolrIndexConfig.java:289)
>> : at
>> org.apache.solr.update.SolrIndexConfig.toIndexWriterConfig(SolrIndexConfig.java:214)
>> : at org.apache.solr.update.SolrIndexWriter.<init>(SolrIndexWriter.java:77)
>> : at org.apache.solr.update.SolrIndexWriter.create(SolrIndexWriter.java:64)
>> : at org.apache.solr.core.SolrCore.initIndex(SolrCore.java:529)
>> : at org.apache.solr.core.SolrCore.<init>(SolrCore.java:796)
>> : ... 8 more
>> : Caused by: java.lang.IllegalAccessException: Class
>> org.apache.solr.core.SolrResourceLoader can not access a member of class
>> org.apache.lucene.util.LuceneTestCase$3 with modifiers ""
>> : at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:109)
>> : at java.lang.Class.newInstance(Class.java:368)
>> : at
>> org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:529)
>> : ... 15 more
>>
>> : [junit4] 2> NOTE: reproduce with: ant test -Dtestcase=SampleTest
>> -Dtests.method=testSimple -Dtests.seed=2E6E8F9ADADFEACF -Dtests.multiplier=2
>> -Dtests.slow=true -Dtests.locale=ja_JP_JP_#u-ca-japanese
>> -Dtests.timezone=Europe/Lisbon -Dtests.asserts=true
>> -Dtests.file.encoding=US-ASCII
>>
>>
>> -Hoss
>> http://www.lucidworks.com/
>>
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