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shilad
java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()
Hi, when using WikiBrain Configuration GUI to import simple English edition with default setting, I got the following error,
Exception in thread "main" java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView;
at org.wikibrain.core.dao.sql.MetaInfoSqlDao.sync(MetaInfoSqlDao.java:171)
at org.wikibrain.core.dao.sql.MetaInfoSqlDao.getAllCummulativeInfo(MetaInfoSqlDao.java:326)
at org.wikibrain.loader.pipeline.PipelineLoader.<init>(PipelineLoader.java:46)
at org.wikibrain.Loader.<init>(Loader.java:72)
at org.wikibrain.Loader.main(Loader.java:107)
LOADING FAILED!
Looks like this is a common problem when compiled with JDK 8 targeting Java 6 or 7 https://bugzilla.redhat.com/show_bug.cgi?id=1160683#c6
Thank you! This looks like a bug related to Java versions. I think the code runs under Java8 but not Java7. However, I'm quite certain with a small change we can support Java7. I'll try to stage a release to fix the problem in the next few days.
On Fri, Sep 11, 2015 at 3:08 PM, cheetah90 [email protected] wrote:
Hi, when using WikiBrain Configuration GUI to import simple English edition with default setting, I got the following error,
Exception in thread "main" java.lang.NoSuchMethodError: java.util.concurrent.ConcurrentHashMap.keySet()Ljava/util/concurrent/ConcurrentHashMap$KeySetView; at org.wikibrain.core.dao.sql.MetaInfoSqlDao.sync(MetaInfoSqlDao.java:171) at org.wikibrain.core.dao.sql.MetaInfoSqlDao.getAllCummulativeInfo(MetaInfoSqlDao.java:326) at org.wikibrain.loader.pipeline.PipelineLoader.
(PipelineLoader.java:46) at org.wikibrain.Loader. (Loader.java:72) at org.wikibrain.Loader.main(Loader.java:107) LOADING FAILED!
Looks like this is a common problem when compiled with JDK 8 targeting Java 6 or 7 https://bugzilla.redhat.com/show_bug.cgi?id=1160683#c6
— Reply to this email directly or view it on GitHub https://github.com/shilad/wikibrain/issues/247.
